chore(release): bump to 0.1.1

CLAUDE.md now states the failing-test-first rule explicitly: write a test
that reproduces the bug and watch it fail before applying the fix, and
extract buried logic into a plain .ts module so it can be unit-tested. A
test written against already-fixed code can pass for the wrong reason.

.gitea/workflows/build-and-test.yml

@@ -49,6 +49,13 @@ jobs:
         run: |
           bun install
 
+      # Tripwire for domain-taxonomy leaks into the presentation layer (a
+      # multi-type includeItemTypes query defining a category in the frontend).
+      # See scripts/check-frontend-boundary.sh and
+      # docs/specs/scoped-search-boundary.md.
+      - name: Check frontend/backend boundary
+        run: bash scripts/check-frontend-boundary.sh
+
       - name: Run frontend tests
         run: |
           bunx svelte-kit sync

.gitea/workflows/build-release.yml

@@ -121,6 +121,64 @@ jobs:
           path: dist/linux/
           retention-days: 30
 
+  build-windows:
+    name: Build Windows
+    runs-on: linux/amd64
+    needs: test
+    # Cross-compiled from Linux via the official Tauri path (MSVC + cargo-xwin),
+    # baked into the builder image. No toolchain installs here — the image has
+    # cargo-xwin, clang/clang-cl, lld, llvm, nsis and the msvc target.
+    container:
+      image: gitea.tourolle.paris/dtourolle/jellytau-builder:latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Cache Rust dependencies
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            ~/.cache/cargo-xwin
+            src-tauri/target
+          key: ${{ runner.os }}-cargo-windows-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-windows-
+
+      - name: Cache Node dependencies
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.bun/install/cache
+            node_modules
+          key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-bun-
+
+      - name: Set app version from tag
+        run: |
+          # On a tag build the tag is the single source of truth for the version.
+          if echo "$GITHUB_REF" | grep -q '^refs/tags/v'; then
+            VERSION="${GITHUB_REF#refs/tags/v}"
+            echo "Setting version to $VERSION"
+            sed -i "s/\"version\": \"[^\"]*\"/\"version\": \"$VERSION\"/" src-tauri/tauri.conf.json
+          fi
+          grep '"version"' src-tauri/tauri.conf.json
+
+      - name: Build Windows (NSIS installer + exe)
+        run: OUTPUT_DIR="$PWD/dist/windows" WIN_BUNDLES=nsis ./scripts/build-windows-cross.sh
+
+      - name: List Windows artifacts
+        run: ls -lah dist/windows/
+
+      - name: Upload Windows build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: jellytau-windows
+          path: dist/windows/
+          retention-days: 30
+
   build-android:
     name: Build Android
     runs-on: linux/amd64
@@ -239,7 +297,7 @@ jobs:
   create-release:
     name: Create Release
     runs-on: linux/amd64
-    needs: [build-linux, build-android]
+    needs: [build-linux, build-windows, build-android]
     if: startsWith(github.ref, 'refs/tags/v')
     container:
       image: gitea.tourolle.paris/dtourolle/jellytau-builder:latest
@@ -259,6 +317,12 @@ jobs:
           name: jellytau-linux
           path: artifacts/linux/
 
+      - name: Download Windows artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: jellytau-windows
+          path: artifacts/windows/
+
       - name: Download Android artifacts
         uses: actions/download-artifact@v3
         with:
@@ -277,6 +341,9 @@ jobs:
           echo "- **AppImage** - Run directly on most Linux distributions" >> release_notes.md
           echo "- **DEB** - Install via \`sudo dpkg -i jellytau_*.deb\` (Ubuntu/Debian)" >> release_notes.md
           echo "" >> release_notes.md
+          echo "#### Windows" >> release_notes.md
+          echo "- **Installer (.exe)** - Run \`jellytau_*-setup.exe\` (NSIS). Unsigned — SmartScreen may warn on first run." >> release_notes.md
+          echo "" >> release_notes.md
           echo "#### Android" >> release_notes.md
           echo "- **APK** - Install via \`adb install jellytau-release.apk\` or sideload via file manager" >> release_notes.md
           echo "- **AAB** - Upload to Google Play Console or testing platforms" >> release_notes.md
@@ -358,7 +425,7 @@ jobs:
           fi
           echo "Release id=$RELEASE_ID"
 
-          for f in artifacts/android/* artifacts/linux/*; do
+          for f in artifacts/android/* artifacts/linux/* artifacts/windows/*; do
             [ -f "$f" ] || continue
             echo "⬆️  Uploading $(basename "$f")"
             curl -fsS -X POST \

.gitea/workflows/publish-docs.yml

@@ -0,0 +1,124 @@
+name: Publish Documentation
+
+# Renders the markdown docs (docs/*.md) into an mdBook site, builds the Rust
+# API reference with cargo doc, and force-pushes the combined output to the
+# orphan `gitea-pages` branch that the Gitea Pages server serves.
+#
+# The published matrix is regenerated during the build, so it is never stale.
+
+on:
+  push:
+    branches:
+      - master
+
+concurrency:
+  # Only one docs publish at a time; a newer push supersedes an in-flight run.
+  group: publish-docs
+  cancel-in-progress: true
+
+jobs:
+  publish-docs:
+    name: Build & publish docs to gitea-pages
+    runs-on: linux/amd64
+    container:
+      image: gitea.tourolle.paris/dtourolle/jellytau-builder:latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # bun is baked into jellytau-builder (see Dockerfile.builder); no setup-bun
+      # action needed — fetching it stalls on this Gitea runner.
+      - name: Install dependencies
+        run: bun install
+
+      - name: Install mdBook
+        run: |
+          set -e
+          MDBOOK_VERSION=v0.4.40
+          URL="https://github.com/rust-lang/mdBook/releases/download/${MDBOOK_VERSION}/mdbook-${MDBOOK_VERSION}-x86_64-unknown-linux-gnu.tar.gz"
+          echo "⬇️  Downloading mdBook ${MDBOOK_VERSION}"
+          curl -fsSL "$URL" | tar -xz -C /usr/local/bin
+          mdbook --version
+
+      - name: Regenerate traceability matrix (keep published copy current)
+        run: bun run traces:markdown
+
+      - name: Assemble mdBook sources
+        run: |
+          set -e
+          # mdBook's src is docs/. Drop in the SUMMARY and the generated
+          # intro + API redirect pages (build artifacts, not committed).
+          cp docs-site/SUMMARY.md docs/SUMMARY.md
+
+          cat > docs/README.md <<'EOF'
+          # JellyTau Documentation
+
+          Cross-platform Jellyfin client — business logic in a Rust backend,
+          SvelteKit + TypeScript frontend, talking over Tauri v2 IPC.
+
+          - **[Requirements Specification](requirements.md)** — user, integration, and development requirements.
+          - **[Traceability Matrix](traceability.md)** — generated map from requirements to code (regenerated on every publish).
+          - **[Architecture](architecture/README.md)** — backend, frontend, data flow, platform backends.
+          - **[Rust API Reference](api/index.html)** — rustdoc for the `src-tauri` backend.
+
+          _This site is published automatically from `master` by the `publish-docs` CI job._
+          EOF
+
+          cat > docs/api-redirect.md <<'EOF'
+          # Rust API Reference
+
+          The full backend API reference is generated by `cargo doc` (rustdoc).
+
+          👉 **[Open the Rust API Reference](api/index.html)**
+          EOF
+
+      - name: Build mdBook site
+        run: mdbook build docs-site --dest-dir "$GITHUB_WORKSPACE/site"
+
+      - name: Build Rust API docs (cargo doc)
+        working-directory: src-tauri
+        # --no-deps keeps it to our own crate (fast, focused); document private
+        # items so internal modules/commands appear.
+        run: |
+          cargo doc --no-deps --document-private-items
+          # The backend modules/commands live in the LIB crate (jellytau_lib);
+          # the bin crate (jellytau) is a near-empty shim. Land on the lib.
+          echo '<meta http-equiv="refresh" content="0; url=jellytau_lib/index.html">' \
+            > target/doc/index.html
+
+      - name: Assemble published output
+        run: |
+          set -e
+          mkdir -p "$GITHUB_WORKSPACE/site/api"
+          cp -r src-tauri/target/doc/. "$GITHUB_WORKSPACE/site/api/"
+          # Disable Jekyll processing on the pages branch.
+          touch "$GITHUB_WORKSPACE/site/.nojekyll"
+          ls -la "$GITHUB_WORKSPACE/site"
+
+      - name: Push to gitea-pages branch
+        env:
+          # PAT preferred; falls back to the auto-provided token (same pattern
+          # as build-release.yml).
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+          AUTO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -e
+          TOKEN="${GITEA_TOKEN:-$AUTO_TOKEN}"
+          REPO="${GITHUB_REPOSITORY}"
+          HOST="$(echo "$GITHUB_SERVER_URL" | sed -E 's#^https?://##')"
+          REMOTE="https://oauth2:${TOKEN}@${HOST}/${REPO}.git"
+
+          cd "$GITHUB_WORKSPACE/site"
+          git init -q
+          git config user.name "gitea-actions"
+          git config user.email "actions@gitea.tourolle.paris"
+          git checkout -q -b gitea-pages
+          git add -A
+          # POSIX sh has no ${VAR::N} substring expansion — cut instead.
+          SHORT_SHA="$(printf '%s' "$GITHUB_SHA" | cut -c1-8)"
+          git commit -q -m "docs: publish site from ${SHORT_SHA}"
+          echo "🚀 Force-pushing to gitea-pages"
+          git push -f "$REMOTE" gitea-pages

.gitea/workflows/traceability-check.yml

@@ -25,9 +25,8 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v1
-
+      # bun is baked into jellytau-builder (see Dockerfile.builder); no setup-bun
+      # action needed — fetching it stalls on this Gitea runner.
       - name: Install dependencies
         run: bun install
 

.gitea/workflows/traceability.yml

@@ -1,175 +0,0 @@
-name: Requirement Traceability Check
-
-on:
-  push:
-    branches:
-      - master
-      - main
-      - develop
-  pull_request:
-    branches:
-      - master
-      - main
-      - develop
-
-jobs:
-  traceability:
-    name: Validate Requirement Traces
-    runs-on: linux/amd64
-    container:
-      image: gitea.tourolle.paris/dtourolle/jellytau-builder:latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v1
-        with:
-          bun-version: latest
-
-      - name: Install dependencies
-        run: bun install
-
-      - name: Extract requirement traces
-        run: bun run traces:json > traces.json
-
-      - name: Validate trace format
-        run: |
-          if ! jq empty traces.json 2>/dev/null; then
-            echo "❌ Invalid traces.json format"
-            exit 1
-          fi
-          echo "✅ Traces JSON is valid"
-
-      - name: Check requirement coverage
-        run: |
-          set -e
-
-          # Extract coverage stats
-          TOTAL_TRACES=$(jq '.totalTraces' traces.json)
-          UR_COUNT=$(jq '.byType.UR | length' traces.json)
-          IR_COUNT=$(jq '.byType.IR | length' traces.json)
-          DR_COUNT=$(jq '.byType.DR | length' traces.json)
-          JA_COUNT=$(jq '.byType.JA | length' traces.json)
-
-          echo "## 📊 Requirement Traceability Report"
-          echo ""
-          echo "**Total TRACES Found:** $TOTAL_TRACES"
-          echo ""
-          echo "### Requirements Covered:"
-          echo "- User Requirements (UR): $UR_COUNT / 39 ($(( UR_COUNT * 100 / 39 ))%)"
-          echo "- Integration Requirements (IR): $IR_COUNT / 24 ($(( IR_COUNT * 100 / 24 ))%)"
-          echo "- Development Requirements (DR): $DR_COUNT / 48 ($(( DR_COUNT * 100 / 48 ))%)"
-          echo "- Jellyfin API Requirements (JA): $JA_COUNT / 3 ($(( JA_COUNT * 100 / 3 ))%)"
-          echo ""
-
-          # Set minimum coverage threshold (50%)
-          TOTAL_REQS=114
-          MIN_COVERAGE=$((TOTAL_REQS / 2))
-          COVERED=$((UR_COUNT + IR_COUNT + DR_COUNT + JA_COUNT))
-          COVERAGE_PERCENT=$((COVERED * 100 / TOTAL_REQS))
-
-          echo "**Overall Coverage:** $COVERED / $TOTAL_REQS ($COVERAGE_PERCENT%)"
-          echo ""
-
-          if [ "$COVERED" -lt "$MIN_COVERAGE" ]; then
-            echo "❌ Coverage below minimum threshold ($COVERAGE_PERCENT% < 50%)"
-            exit 1
-          else
-            echo "✅ Coverage meets minimum threshold ($COVERAGE_PERCENT% >= 50%)"
-          fi
-
-      - name: Check for new untraced code
-        run: |
-          set -e
-
-          # Find files modified in this PR/push
-          if [ "${{ github.event_name }}" = "pull_request" ]; then
-            CHANGED_FILES=$(git diff --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.(ts|tsx|svelte|rs)$' || true)
-          else
-            CHANGED_FILES=$(git diff --name-only HEAD~1 | grep -E '\.(ts|tsx|svelte|rs)$' || true)
-          fi
-
-          if [ -z "$CHANGED_FILES" ]; then
-            echo "✅ No source files changed"
-            exit 0
-          fi
-
-          echo "### Files Changed:"
-          echo "$CHANGED_FILES" | sed 's/^/- /'
-          echo ""
-
-          # Check if changed files have TRACES
-          UNTRACED_FILES=""
-          while IFS= read -r file; do
-            if [ -f "$file" ]; then
-              # Skip test files and generated code
-              if [[ "$file" == *".test."* ]] || [[ "$file" == *"node_modules"* ]]; then
-                continue
-              fi
-
-              # Check if file has TRACES comments
-              if ! grep -q "TRACES:" "$file" 2>/dev/null; then
-                UNTRACED_FILES+="$file"$'\n'
-              fi
-            fi
-          done <<< "$CHANGED_FILES"
-
-          if [ -n "$UNTRACED_FILES" ]; then
-            echo "⚠️  New files without TRACES:"
-            echo "$UNTRACED_FILES" | sed 's/^/  - /'
-            echo ""
-            echo "💡 Add TRACES comments to link code to requirements:"
-            echo "   // TRACES: UR-001, UR-002 | DR-003"
-          else
-            echo "✅ All changed files have TRACES comments"
-          fi
-
-      - name: Generate traceability report
-        if: always()
-        run: bun run traces:markdown
-
-      - name: Upload traceability report
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: traceability-report
-          path: docs/traceability.md
-          retention-days: 30
-
-      - name: Comment PR with coverage report
-        if: github.event_name == 'pull_request'
-        uses: actions/github-script@v7
-        with:
-          script: |
-            const fs = require('fs');
-            const traces = JSON.parse(fs.readFileSync('traces.json', 'utf8'));
-
-            const urCount = traces.byType.UR.length;
-            const irCount = traces.byType.IR.length;
-            const drCount = traces.byType.DR.length;
-            const jaCount = traces.byType.JA.length;
-            const total = urCount + irCount + drCount + jaCount;
-            const coverage = Math.round((total / 114) * 100);
-
-            const comment = `## 📊 Requirement Traceability Report
-
-**Coverage:** ${coverage}% (${total}/114 requirements traced)
-
-### By Type:
-- **User Requirements (UR):** ${urCount}/39 (${Math.round(urCount/39*100)}%)
-- **Integration Requirements (IR):** ${irCount}/24 (${Math.round(irCount/24*100)}%)
-- **Development Requirements (DR):** ${drCount}/48 (${Math.round(drCount/48*100)}%)
-- **Jellyfin API (JA):** ${jaCount}/3 (${Math.round(jaCount/3*100)}%)
-
-**Total Traces:** ${traces.totalTraces}
-
-[View full report](artifacts) | [Format Guide](https://github.com/yourusername/jellytau/blob/master/scripts/README.md#extract-tracests)`;
-
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: comment
-            });

.gitignore

@@ -58,3 +58,9 @@ android-keystore/
 
 # Local machine-specific Android NDK toolchain paths (do not commit)
 src-tauri/.cargo/config.toml
+
+# Docs site build artifacts (generated by the publish-docs CI job into docs/)
+/docs/SUMMARY.md
+/docs/README.md
+/docs/api-redirect.md
+/docs-site/book/

CLAUDE.md

@@ -0,0 +1,297 @@
+# JellyTau
+
+A cross-platform Jellyfin client. Business logic lives in a Rust backend
+(`src-tauri/`); a SvelteKit + TypeScript frontend (`src/`) handles presentation
+and talks to it over Tauri v2 IPC. Targets **Linux** (libmpv, WebKitGTK HTML5
+`<video>` for transcoded playback) and **Android** (ExoPlayer).
+
+Package manager is **bun**.
+
+## Build / Run / Test
+
+All routine tasks go through `package.json` scripts and helper scripts in
+`scripts/`:
+
+```bash
+bun install                  # install deps
+bun run dev                  # vite dev server (frontend)
+bun run tauri dev            # run the desktop app
+
+bun run check                # svelte-check (types)
+bun run test                 # vitest (frontend unit/integration)
+bun run test:rust            # cargo test (scripts/test-rust.sh)
+bun run test:all             # full suite (scripts/test-all.sh)
+bun run test:e2e             # webdriverio e2e
+
+# Android — canonical entry points (see scripts/):
+bun run android:build            # debug APK
+bun run android:build:release    # release APK
+bun run android:deploy           # install to connected device
+bun run android:dev              # build + deploy
+bun run android:logs             # logcat
+```
+
+CI runs on **Gitea Actions** (`.gitea/workflows/`), not GitHub. Use the `gh` CLI
+only against the mirror if one exists; the canonical remote is
+`gitea.tourolle.paris`.
+
+> **🔴 CI installs no system tools.** Never add an `apt-get`, `rustup`,
+> `sdkmanager`, mingw/nsis, or any other *toolchain/system-package* install to a
+> CI workflow step. Every build, test, and packaging **tool** must already live
+> in the Docker image the job runs in — the unified builder (`Dockerfile.builder`
+> → `gitea.tourolle.paris/dtourolle/jellytau-builder`) for Android/Linux/Windows,
+> or `Dockerfile.arch` for Arch. If a job needs a tool the image lacks, **add it
+> to the image, rebuild + push it** (`scripts/build-builder-image.sh`), and use
+> it from CI — do not install it at job time. This keeps builds reproducible and
+> fast, and is why the packaging stages are thin `FROM ${BUILDER_IMAGE}` layers.
+>
+> `bun install` (fetching the project's own JS deps per the lockfile) is **not**
+> a violation — that's project dependencies, not a toolchain. The rule is about
+> system tools, not npm/bun/cargo *packages* declared by the project.
+
+## Before Committing
+
+- Frontend: `bun run check` and `bun run test` must pass.
+- Rust: `cd src-tauri && cargo fmt` then `cargo clippy`, plus `bun run test:rust`.
+- **Boundary**: `bun run check:boundary` must pass — no domain taxonomy (Jellyfin
+  item-type category sets) leaked into the frontend. See below.
+- **Traceability**: new requirement-implementing code must carry a `// TRACES:`
+  comment (see below).
+- **Android source edits**: edit `src-tauri/android/src` (the canonical tree),
+  then run `scripts/sync-android-sources.sh` to sync into the `gen/` tree.
+  Never edit the generated `gen/` sources directly.
+
+## Traceability (TRACES)
+
+This project practices requirement-driven development: code that implements a
+requirement is tagged with a `TRACES:` comment linking it to requirement IDs, and
+an extraction tool builds the traceability matrix. **When you add or change code
+that implements a requirement, add/update its TRACES comment.** Internal helpers
+and requirement-less code stay untraced.
+
+Format — `// TRACES: <URs> | <DRs> | <tests>`, e.g.:
+
+```rust
+/// TRACES: UR-005 | DR-001
+pub enum PlayerState { … }
+```
+```typescript
+// TRACES: UR-005, UR-026 | DR-029
+export function autoplayNextEpisode() { }
+```
+
+ID types: **UR** user requirement, **IR** integration, **DR** development, **JA**
+Jellyfin API, **UT** unit test, **IT** integration test. Requirements are defined
+in [docs/requirements.md](docs/requirements.md); the generated matrix is
+[docs/traceability.md](docs/traceability.md).
+
+Tooling:
+
+```bash
+bun run traces            # extract traces (default format)
+bun run traces:json       # JSON — e.g. | jq '.byType' or '.requirements."UR-005"'
+bun run traces:markdown   # regenerate docs/traceability.md
+git diff --name-only | xargs grep -L "TRACES:"   # find untraced changed files
+```
+
+**CI is Gitea Actions** (`.gitea/workflows/`, remote `gitea.tourolle.paris`), not
+GitHub. `traceability-check.yml` fails the build if coverage drops below
+**50%** (`MIN_THRESHOLD`); `build-and-test.yml` runs frontend + Rust tests and an
+Android `cargo check`. See [docs/traceability-ci.md](docs/traceability-ci.md) and
+[docs/traces-quick-ref.md](docs/traces-quick-ref.md).
+
+### Traces drive release notes
+
+Prefer traceability over raw commit subjects when writing release notes for
+[docs/release-checklist.md](docs/release-checklist.md). Raw `git log` subjects are
+noisy; the TRACES graph gives a semantic summary of *what capabilities* the
+release touched.
+
+```bash
+bun run release:notes                 # <latest tag>..HEAD
+bun run release:notes v0.0.15..HEAD   # explicit range
+```
+
+[scripts/release-notes.ts](scripts/release-notes.ts) resolves a commit range's
+changed files → their `TRACES:` IDs → descriptions in
+[docs/requirements.md](docs/requirements.md), then groups **UR** into *Features*
+and **DR/IR** into *Improvements* (deduped, so many commits touching one
+requirement collapse to one line). It also lists changed files that carry no
+TRACES so nothing is silently dropped — those still need a manual line. Treat the
+output as a reviewed draft, not a final changelog.
+
+## Architecture
+
+- **Rust backend** (`src-tauri/src/`) — all business logic: auth, catalog,
+  sessions, downloads, offline cache, playback control. Commands grouped by
+  domain in `src-tauri/src/commands/` (`auth.rs`, `catalog.rs`, `player/`,
+  `download/`, `offline.rs`, `sessions.rs`, …).
+- **Svelte frontend** (`src/`) — presentation only. Stores in
+  `src/lib/stores/`, API wrappers in `src/lib/api/`, components in
+  `src/lib/components/`.
+- **Playback layers** — Linux uses libmpv for direct playback and a WebKitGTK
+  HTML5 `<video>` element for HLS-transcoded (h264) streams; Android uses
+  ExoPlayer with a foreground media service + `MediaSessionCompat`.
+- **tauri-specta** generates TypeScript bindings and typed events from the Rust
+  command/event definitions (registered via the Builder in `src-tauri/src/lib.rs`).
+
+**Read the architecture docs before making structural changes** — they are the
+canonical, maintained source; this file only summarizes. See
+[docs/architecture/README.md](docs/architecture/README.md) and:
+
+| Doc | Contents |
+|-----|----------|
+| [01-rust-backend.md](docs/architecture/01-rust-backend.md) | Player/session state machines, playback mode, queue, commands |
+| [02-svelte-frontend.md](docs/architecture/02-svelte-frontend.md) | Stores, repository architecture, MiniPlayer, autoplay, nav guard |
+| [03-data-flow.md](docs/architecture/03-data-flow.md) | Cache-first query flow, playback initiation, mode transfer |
+| [04-type-sync-and-threading.md](docs/architecture/04-type-sync-and-threading.md) | **Rust↔TS type sync, the IPC camelCase convention + param table, locking** |
+| [05-platform-backends.md](docs/architecture/05-platform-backends.md) | MpvBackend (Linux), ExoPlayerBackend (Android), MediaSession, HTML5 adapter |
+| [06-downloads-and-offline.md](docs/architecture/06-downloads-and-offline.md) | Download manager/worker, smart cache, offline commands |
+| [07-connectivity.md](docs/architecture/07-connectivity.md) | HTTP retry, ConnectivityMonitor, reachability model |
+| [08-database-design.md](docs/architecture/08-database-design.md) | Tables, relationships, key queries |
+| [09-security.md](docs/architecture/09-security.md) | Token storage, secure storage, network security |
+
+Release process lives in [docs/release-checklist.md](docs/release-checklist.md)
+and [docs/build-release.md](docs/build-release.md).
+
+### Core principles (from the architecture docs)
+
+- **Playback state is one-directional.** The player (ExoPlayer on Android, MPV on
+  Linux, session poller in remote mode) is the **authoritative source** of state
+  — position, pause, seeking, rate, track changes. The Svelte UI, OS
+  `MediaSession`/lockscreen, and MPRIS are **consumers**; they reflect what the
+  player reports and never determine it.
+- **Unified player boundary.** UI controls playback *only* through the frontend
+  facade `src/lib/player/index.ts` (`playerController`) — never by calling
+  `commands.player*` directly. Webview HTML5 `<video>` reports its state back
+  into Rust via `src/lib/player/html5Adapter.ts` and the `player_report_*`
+  commands, so the controller stays the single source of truth in both native
+  and HTML5 modes.
+- **Reachability from real traffic.** Server online/offline is derived from the
+  outcome of actual repository requests (reported to `ConnectivityMonitor`), not
+  a side-channel poller. The `/System/Info/Public` probe runs *only while
+  offline*, as a recovery detector.
+- **Poison-tolerant locking.** Access shared `std::sync` state via the
+  `MutexSafe`/`RwLockSafe` helpers in `utils/lock.rs`, which recover a poisoned
+  lock instead of cascading a panic across the player.
+- **Graceful backend init.** If a native player backend fails to initialize, the
+  app falls back to a no-op backend and emits `backend-init-failed` rather than
+  crashing.
+- **Domain vocabulary lives in Rust.** The frontend is presentation-only and must
+  not encode Jellyfin's *taxonomy* — e.g. the set of item types that defines a
+  category like "Music". Send an opaque scope/enum across the boundary and let the
+  backend expand it. Single-type presentation (`itemType: "Movie"`, "this page
+  shows albums") is fine; a *category → set of types* mapping in `src/` is a leak.
+  `bun run check:boundary` is the tripwire; the real gate is the spec's layer
+  assignment. See [scoped-search-boundary.md](docs/specs/scoped-search-boundary.md)
+  for the incident this rule came from.
+
+## Writing specs
+
+New feature specs go in [docs/specs/](docs/specs/). **Start from
+[SPEC-TEMPLATE.md](docs/specs/SPEC-TEMPLATE.md)** — its "Layer assignment" section
+forces each piece of *logic* to be placed in the correct layer (Rust = domain,
+frontend = presentation) *with a reason*, which is what prevents boundary leaks.
+Before accepting a spec, run it past
+[SPEC-REVIEW-CHECKLIST.md](docs/specs/SPEC-REVIEW-CHECKLIST.md). Do **not** frame
+a spec around "no Rust changes required" — correct layer placement is the goal,
+not minimal backend churn.
+
+## Conventions
+
+### Rust Backend
+
+- Use `#[tauri::command]` for all IPC handlers.
+- Prefer `async` commands for I/O-bound work.
+- Return `Result<T, String>` from commands (the established convention here).
+- Use `tauri::State<>` for shared state.
+- Group related commands in domain modules under `commands/`.
+- Use official Tauri plugins before writing custom native code.
+
+### Frontend
+
+- Use `invoke<T>()` from `@tauri-apps/api/core`, or the tauri-specta bindings.
+- Define TS types matching the Rust structs; prefer the generated bindings.
+- Handle IPC errors with try/catch.
+- Use `@tauri-apps/api/path` for paths (never hardcode).
+- Use `@tauri-apps/api/event` for backend→frontend events.
+
+### 🔴 IPC parameter naming (Tauri v2)
+
+The command **name** must match the Rust function name exactly
+(`invoke("player_play_queue", …)`). But **parameter names do NOT** — Tauri v2's
+`#[tauri::command]` macro auto-converts snake_case Rust params to **camelCase**
+on the frontend:
+
+```rust
+#[tauri::command]
+pub async fn cmd(repository_handle: String) { … }
+```
+```typescript
+await invoke("cmd", { repositoryHandle: "…" }); // camelCase, auto-converted
+```
+
+Nested struct fields need `#[serde(rename_all = "camelCase")]`; tagged unions use
+`#[serde(tag = "type")]` and both sides must match the tag. Note: tauri-specta
+tagged responses keep the Rust field names as-is (e.g. `new_url`, not `newUrl`).
+
+### Events
+
+- Backend events use **kebab-case** names (`download-event`, `search-event`).
+- Emit from Rust via `emit(...)`; consume on the frontend via
+  `@tauri-apps/api/event` or the tauri-specta typed event bindings.
+
+### Security
+
+- Declare minimum permissions in `src-tauri/capabilities/`.
+- Keep the CSP restrictive in `tauri.conf.json`.
+- Validate all inputs in Rust command handlers.
+- **Never read credentials** (tokens/keys from keyring, env, or stores) without
+  asking the user first.
+
+## Gotchas (hard-won)
+
+- **Never call sync/blocking APIs from event callbacks** that can re-enter the
+  player or hold a lock — it deadlocks. On Android, bind a locked
+  `AutoplayDecision` to a `let` *before* matching; a tokio `MutexGuard` held in
+  the `match` scrutinee deadlocks the `AdvanceToNext` arm.
+- **VideoPlayer native mode**: no lifecycle calls after an `await` in `onMount`
+  (it flips to HTML5 mode and breaks Android seek).
+- **Transcoded resume/seek**: `get_video_stream_url` must return the HLS
+  `master.m3u8`, not `stream.mp4`, or transcoded playback never starts.
+- **Downloads** cap at 3 concurrent; the backend pump auto-starts pending rows.
+  Don't loop `startDownload` from the frontend.
+- **Parallel Claude sessions**: the user may run concurrent sessions. Unexpected
+  file changes may be another session — check `git diff` before "repairing".
+
+## Testing
+
+### 🔴 Bug fixes: failing test FIRST, then the fix
+
+When fixing a bug, **write a test that reproduces it and watch it fail before
+touching the fix.** Red → green, in that order:
+
+1. Write a test that exercises the broken behavior and **run it — it must fail**,
+   proving the test actually catches the bug (a test that passes before the fix
+   proves nothing).
+2. Apply the fix.
+3. Re-run — the test now passes, and so does the rest of the suite.
+
+Never fix first and backfill the test afterward: a test written against
+already-fixed code can pass for the wrong reason and silently fails to guard the
+regression. If the logic is buried in a component, extract the pure part into a
+plain `.ts` module (e.g. `episodeStrip.ts`) so it can be unit-tested — the same
+pattern as `TrackList.logic.test.ts`.
+
+```bash
+# Rust
+cd src-tauri && cargo test
+cd src-tauri && cargo test test_name        # single test
+
+# Frontend
+bun run test
+bun run test:coverage
+
+# Tauri IPC param-naming integration tests (guard the camelCase rule):
+bun run test -- tauriIntegration.test.ts
+```

Dockerfile

@@ -1,4 +1,11 @@
 # Multi-stage build for JellyTau - Tauri Jellyfin client
+#
+# The desktop packaging stages (desktop-linux-build, windows-cross) build FROM
+# the unified registry builder image, which carries every packaging tool. Declared
+# here (before the first FROM) so it's in scope for those stages' FROM lines.
+# Override for local iteration: --build-arg BUILDER_IMAGE=jellytau-builder:latest
+ARG BUILDER_IMAGE=gitea.tourolle.paris/dtourolle/jellytau-builder:latest
+
 FROM ubuntu:24.04 AS builder
 
 ENV DEBIAN_FRONTEND=noninteractive \
@@ -108,6 +115,30 @@ RUN cd src-tauri && cargo fetch && cd .. && \
     bun run tauri android build --apk true && \
     echo "APK build complete!"
 
+# Desktop packaging stages build FROM the unified registry builder image (see the
+# BUILDER_IMAGE ARG at the top), which already carries every packaging tool
+# (rpm/file for Linux, mingw-w64 + nsis + the x86_64-pc-windows-gnu rust target
+# for Windows). ONE source of dependency truth, shared with CI — no per-stage
+# apt/rustup here.
+
+# Linux desktop packaging environment (deb + rpm; Arch is Dockerfile.arch).
+# Thin layer over the builder — the actual build runs at container-run time on
+# the bind-mounted source (see docker-compose.yml / scripts/build-desktop-linux.sh),
+# matching the `dev` service model. Run standalone with:
+#   docker run --rm -v "$PWD:/app" -v "$PWD/dist:/app/dist" <img> \
+#     bash -c "OUTPUT_DIR=/app/dist scripts/build-desktop-linux.sh"
+FROM ${BUILDER_IMAGE} AS desktop-linux-build
+WORKDIR /app
+CMD ["bash", "-c", "OUTPUT_DIR=/app/dist scripts/build-desktop-linux.sh"]
+
+# Windows cross-compile environment (MSVC target via cargo-xwin). Video works via
+# WebView2 and audio via the webview <audio> backend; NSIS installer is produced
+# from Linux by cargo-xwin. Default bundles NSIS; override WIN_BUNDLES=none for
+# exe-only. Build runs at container-run time like above.
+FROM ${BUILDER_IMAGE} AS windows-cross
+WORKDIR /app
+CMD ["bash", "-c", "OUTPUT_DIR=/app/dist WIN_BUNDLES=${WIN_BUNDLES:-nsis} scripts/build-windows-cross.sh"]
+
 # Final output stage
 FROM ubuntu:24.04 AS final
 RUN apt-get update && apt-get install -y --no-install-recommends \

Dockerfile.arch

@@ -0,0 +1,37 @@
+# JellyTau Arch Linux package builder.
+#
+# Tauri has no pacman bundle target, so we build a real .pkg.tar.zst with makepkg
+# from packaging/arch/PKGBUILD. makepkg refuses to run as root, so we create a
+# non-root `builder` user with passwordless sudo (for `makepkg -s` pacman calls).
+#
+#   docker build -f Dockerfile.arch -t jellytau-arch .
+#   docker run --rm -v "$PWD/dist:/out" jellytau-arch
+FROM archlinux:latest
+
+RUN pacman -Syu --noconfirm \
+    base-devel git sudo \
+    rust cargo nodejs \
+    webkit2gtk-4.1 mpv gtk3 libayatana-appindicator \
+    libsoup3 pkgconf openssl \
+    && pacman -Scc --noconfirm
+
+# Bun is not in the official repos; install the upstream binary.
+RUN curl -fsSL https://bun.sh/install | bash && \
+    ln -s /root/.bun/bin/bun /usr/local/bin/bun
+
+# Non-root build user with passwordless sudo for makepkg's dependency step.
+RUN useradd -m builder && \
+    echo 'builder ALL=(ALL) NOPASSWD: ALL' > /etc/sudoers.d/builder && \
+    ln -sf /root/.bun/bin/bun /usr/local/bin/bun
+
+WORKDIR /app
+COPY . .
+RUN chown -R builder:builder /app
+
+USER builder
+ENV OUTPUT_DIR=/out
+RUN mkdir -p /out
+VOLUME ["/out"]
+
+# Default: build the package. Output lands in /out (mount it to collect the pkg).
+CMD ["bash", "-c", "OUTPUT_DIR=/out scripts/build-arch.sh"]

Dockerfile.builder

@@ -1,5 +1,9 @@
 # JellyTau Builder Image
-# Pre-built image with all dependencies for building and testing
+# Pre-built image with all dependencies for building, testing, and packaging:
+#   - Android APK (SDK/NDK), Linux desktop (deb/rpm),
+#   - Windows cross via the official Tauri path: MSVC target + cargo-xwin + NSIS
+# Arch packages build in a separate archlinux image (Dockerfile.arch) since
+# makepkg is Arch-specific.
 # Push to your registry: docker build -f Dockerfile.builder -t gitea.tourolle.paris/dtourolle/jellytau-builder:latest .
 
 FROM ubuntu:24.04
@@ -83,6 +87,34 @@ RUN $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --sdk_root=$ANDROID_HOME \
 # Set NDK environment variable
 ENV NDK_HOME=$ANDROID_HOME/ndk/$NDK_VERSION
 
+# ---------------------------------------------------------------------------
+# Desktop packaging tools — kept in a trailing layer ON PURPOSE so that adding
+# or changing a packaging tool doesn't invalidate the expensive apt/rust/Android
+# layers above (a tool tweak becomes a ~1-2 min rebuild, not ~15). Covers Linux
+# (deb/rpm) and Windows cross (MSVC via cargo-xwin + NSIS).
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    # Linux desktop packaging: rpmbuild for the .rpm bundle (deb needs nothing extra)
+    rpm \
+    file \
+    # Windows cross-compile (official Tauri path: MSVC target via cargo-xwin).
+    # clang provides clang-cl, the MSVC-compatible C compiler cc-rs uses to build
+    # C deps (bundled sqlite, ring, ...); lld = linker; llvm = llvm-lib/ar etc;
+    # nsis = installer generator.
+    clang \
+    lld \
+    llvm \
+    nsis \
+    && rm -rf /var/lib/apt/lists/* \
+    # Ubuntu's clang package ships clang but NOT the clang-cl alias that cc-rs
+    # invokes for MSVC targets. clang-cl is the same binary in MSVC-compat mode,
+    # so provide it as a symlink.
+    && ln -sf /usr/bin/clang /usr/local/bin/clang-cl
+
+# Windows rust target + cargo-xwin (downloads the MSVC CRT/SDK at build time).
+RUN . $HOME/.cargo/env && \
+    rustup target add x86_64-pc-windows-msvc && \
+    cargo install --locked cargo-xwin
+
 WORKDIR /app
 
 ENTRYPOINT ["/bin/bash"]

bun.lock

@@ -18,6 +18,7 @@
         "@tailwindcss/vite": "^4.1.18",
         "@tauri-apps/cli": "^2",
         "@testing-library/svelte": "^5.3.1",
+        "@vitest/coverage-v8": "^4.0.18",
         "@vitest/ui": "^4.0.16",
         "@wdio/cli": "^9.5.0",
         "@wdio/local-runner": "^9.5.0",
@@ -30,7 +31,7 @@
         "tailwindcss": "^4.1.18",
         "typescript": "~5.6.2",
         "vite": "^6.0.3",
-        "vitest": "^4.0.16",
+        "vitest": ">=1.0.0 <5.0.0",
         "webdriverio": "^9.5.0",
       },
     },
@@ -46,10 +47,18 @@
 
     "@babel/code-frame": ["@babel/code-frame@7.27.1", "", { "dependencies": { "@babel/helper-validator-identifier": "^7.27.1", "js-tokens": "^4.0.0", "picocolors": "^1.1.1" } }, "sha512-cjQ7ZlQ0Mv3b47hABuTevyTuYN4i+loJKGeV9flcCgIK37cCXRh+L1bd3iBHlynerhQ7BhCkn2BPbQUL+rGqFg=="],
 
+    "@babel/helper-string-parser": ["@babel/helper-string-parser@7.29.7", "", {}, "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw=="],
+
     "@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.28.5", "", {}, "sha512-qSs4ifwzKJSV39ucNjsvc6WVHs6b7S03sOh2OcHF9UHfVPqWWALUsNUVzhSBiItjRZoLHx7nIarVjqKVusUZ1Q=="],
 
+    "@babel/parser": ["@babel/parser@7.29.7", "", { "dependencies": { "@babel/types": "^7.29.7" }, "bin": "./bin/babel-parser.js" }, "sha512-hnORnjP/1P/zFEndoeX+n+t1RwWRJiJpM/jO7FW32Kn9r5+sJB2JWOdYo4L6k78j15eCwY3Gm/7364B1EMwtNg=="],
+
     "@babel/runtime": ["@babel/runtime@7.28.4", "", {}, "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ=="],
 
+    "@babel/types": ["@babel/types@7.29.7", "", { "dependencies": { "@babel/helper-string-parser": "^7.29.7", "@babel/helper-validator-identifier": "^7.29.7" } }, "sha512-4zBIxpPzowiZpusoFkyGVwakdRJUyuH5PxQ/PrqghfdFWWasvnCdPfQXHrenDai+gyLARulZjZowCOj6fjT4pA=="],
+
+    "@bcoe/v8-coverage": ["@bcoe/v8-coverage@1.0.2", "", {}, "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA=="],
+
     "@csstools/color-helpers": ["@csstools/color-helpers@5.1.0", "", {}, "sha512-S11EXWJyy0Mz5SYvRmY8nJYTFFd1LCNV+7cXyAgQtOOuzb4EsgfqDufL+9esx72/eLhsRdGZwaldu/h+E4t4BA=="],
 
     "@csstools/css-calc": ["@csstools/css-calc@2.1.4", "", { "peerDependencies": { "@csstools/css-parser-algorithms": "^3.0.5", "@csstools/css-tokenizer": "^3.0.4" } }, "sha512-3N8oaj+0juUw/1H3YwmDDJXCgTB1gKU6Hc/bB502u9zR0q2vd786XJH9QfrKIEgFlZmhZiq6epXl4rHqhzsIgQ=="],
@@ -348,6 +357,8 @@
 
     "@types/yauzl": ["@types/yauzl@2.10.3", "", { "dependencies": { "@types/node": "*" } }, "sha512-oJoftv0LSuaDZE3Le4DbKX+KS9G36NzOeSap90UIK0yMA/NhKJhqlSGtNDORNRaIbQfzjXDrQa0ytJ6mNRGz/Q=="],
 
+    "@vitest/coverage-v8": ["@vitest/coverage-v8@4.1.10", "", { "dependencies": { "@bcoe/v8-coverage": "^1.0.2", "@vitest/utils": "4.1.10", "ast-v8-to-istanbul": "^1.0.0", "istanbul-lib-coverage": "^3.2.2", "istanbul-lib-report": "^3.0.1", "istanbul-reports": "^3.2.0", "magicast": "^0.5.2", "obug": "^2.1.1", "std-env": "^4.0.0-rc.1", "tinyrainbow": "^3.1.0" }, "peerDependencies": { "@vitest/browser": "4.1.10", "vitest": "4.1.10" }, "optionalPeers": ["@vitest/browser"] }, "sha512-IM49HmthevbgAO4anp1hwtoT9wYe59w0LR00gr+eagHE+ZJ5lK4sLPeO0ubgoJcwLk6dehU3R24N+FbEEKDc8g=="],
+
     "@vitest/expect": ["@vitest/expect@4.0.16", "", { "dependencies": { "@standard-schema/spec": "^1.0.0", "@types/chai": "^5.2.2", "@vitest/spy": "4.0.16", "@vitest/utils": "4.0.16", "chai": "^6.2.1", "tinyrainbow": "^3.0.3" } }, "sha512-eshqULT2It7McaJkQGLkPjPjNph+uevROGuIMJdG3V+0BSR2w9u6J9Lwu+E8cK5TETlfou8GRijhafIMhXsimA=="],
 
     "@vitest/mocker": ["@vitest/mocker@4.0.16", "", { "dependencies": { "@vitest/spy": "4.0.16", "estree-walker": "^3.0.3", "magic-string": "^0.30.21" }, "peerDependencies": { "msw": "^2.4.9", "vite": "^6.0.0 || ^7.0.0-0" }, "optionalPeers": ["msw", "vite"] }, "sha512-yb6k4AZxJTB+q9ycAvsoxGn+j/po0UaPgajllBgt1PzoMAAmJGYFdDk0uCcRcxb3BrME34I6u8gHZTQlkqSZpg=="],
@@ -362,7 +373,7 @@
 
     "@vitest/ui": ["@vitest/ui@4.0.16", "", { "dependencies": { "@vitest/utils": "4.0.16", "fflate": "^0.8.2", "flatted": "^3.3.3", "pathe": "^2.0.3", "sirv": "^3.0.2", "tinyglobby": "^0.2.15", "tinyrainbow": "^3.0.3" }, "peerDependencies": { "vitest": "4.0.16" } }, "sha512-rkoPH+RqWopVxDnCBE/ysIdfQ2A7j1eDmW8tCxxrR9nnFBa9jKf86VgsSAzxBd1x+ny0GC4JgiD3SNfRHv3pOg=="],
 
-    "@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+    "@vitest/utils": ["@vitest/utils@4.1.10", "", { "dependencies": { "@vitest/pretty-format": "4.1.10", "convert-source-map": "^2.0.0", "tinyrainbow": "^3.1.0" } }, "sha512-fy9am/HWxbaGt/Sawrp90vt6Y6jQwf1RX77cz3uwoJwJVMli/e1IEwRPnMNJ7vKfPTwo0diXifkpPvwH9v7nGA=="],
 
     "@wdio/cli": ["@wdio/cli@9.23.2", "", { "dependencies": { "@vitest/snapshot": "^2.1.1", "@wdio/config": "9.23.2", "@wdio/globals": "9.23.0", "@wdio/logger": "9.18.0", "@wdio/protocols": "9.23.2", "@wdio/types": "9.23.2", "@wdio/utils": "9.23.2", "async-exit-hook": "^2.0.1", "chalk": "^5.4.1", "chokidar": "^4.0.0", "create-wdio": "9.21.0", "dotenv": "^17.2.0", "import-meta-resolve": "^4.0.0", "lodash.flattendeep": "^4.4.0", "lodash.pickby": "^4.6.0", "lodash.union": "^4.6.0", "read-pkg-up": "^10.0.0", "tsx": "^4.7.2", "webdriverio": "9.23.2", "yargs": "^17.7.2" }, "bin": { "wdio": "bin/wdio.js" } }, "sha512-D6KZGomfNmjFhSWYdfR7Ojik5qWEpPoR4g5LQPzbFwiii/RkTudLcMFcCO6s7HTMLDQDWryOStV2KK6KqrIF8A=="],
 
@@ -422,6 +433,8 @@
 
     "ast-types": ["ast-types@0.13.4", "", { "dependencies": { "tslib": "^2.0.1" } }, "sha512-x1FCFnFifvYDDzTaLII71vG5uvDwgtmDTEVWAxrgeiR8VjMONcCXJx7E+USjDtHlwFmt9MysbqgF9b9Vjr6w+w=="],
 
+    "ast-v8-to-istanbul": ["ast-v8-to-istanbul@1.0.5", "", { "dependencies": { "@jridgewell/trace-mapping": "^0.3.31", "estree-walker": "^3.0.3", "js-tokens": "^10.0.0" } }, "sha512-UPAgKJFSEGMWSDr3LX4tqnAb4f7KGT8O40Tyx8wbYmmZ/yn58lNCm8h3svs3eXgiGd5AXxz8NDOvXWvicq+rJA=="],
+
     "async": ["async@3.2.6", "", {}, "sha512-htCUDlxyyCLMgaM3xXg0C0LW2xqfuQ6p05pCEIsXuyQ+a1koYKTuBMzRNwmybfLgvJDMd0r1LTn4+E0Ti6C2AA=="],
 
     "async-exit-hook": ["async-exit-hook@2.0.1", "", {}, "sha512-NW2cX8m1Q7KPA7a5M2ULQeZ2wR5qI5PAbw5L0UOMxdioVk9PMZ0h1TmyZEkPYrCvYjDlFICusOu1dlEKAAeXBw=="],
@@ -498,6 +511,8 @@
 
     "concat-map": ["concat-map@0.0.1", "", {}, "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="],
 
+    "convert-source-map": ["convert-source-map@2.0.0", "", {}, "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg=="],
+
     "cookie": ["cookie@0.6.0", "", {}, "sha512-U71cyTamuh1CRNCfpGY6to28lxvNwPG4Guz/EVjgf3Jmzv0vlDp1atT9eS5dDjMYHucpHbWns6Lwf3BKz6svdw=="],
 
     "core-util-is": ["core-util-is@1.0.3", "", {}, "sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ=="],
@@ -686,6 +701,8 @@
 
     "html-encoding-sniffer": ["html-encoding-sniffer@6.0.0", "", { "dependencies": { "@exodus/bytes": "^1.6.0" } }, "sha512-CV9TW3Y3f8/wT0BRFc1/KAVQ3TUHiXmaAb6VW9vtiMFf7SLoMd1PdAc4W3KFOFETBJUb90KatHqlsZMWV+R9Gg=="],
 
+    "html-escaper": ["html-escaper@2.0.2", "", {}, "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg=="],
+
     "htmlfy": ["htmlfy@0.8.1", "", {}, "sha512-xWROBw9+MEGwxpotll0h672KCaLrKKiCYzsyN8ZgL9cQbVumFnyvsk2JqiB9ELAV1GLj1GG/jxZUjV9OZZi/yQ=="],
 
     "htmlparser2": ["htmlparser2@10.1.0", "", { "dependencies": { "domelementtype": "^2.3.0", "domhandler": "^5.0.3", "domutils": "^3.2.2", "entities": "^7.0.1" } }, "sha512-VTZkM9GWRAtEpveh7MSF6SjjrpNVNNVJfFup7xTY3UpFtm67foy9HDVXneLtFVt4pMz5kZtgNcvCniNFb1hlEQ=="],
@@ -738,6 +755,12 @@
 
     "isexe": ["isexe@3.1.1", "", {}, "sha512-LpB/54B+/2J5hqQ7imZHfdU31OlgQqx7ZicVlkm9kzg9/w8GKLEcFfJl/t7DCEDueOyBAD6zCCwTO6Fzs0NoEQ=="],
 
+    "istanbul-lib-coverage": ["istanbul-lib-coverage@3.2.2", "", {}, "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg=="],
+
+    "istanbul-lib-report": ["istanbul-lib-report@3.0.1", "", { "dependencies": { "istanbul-lib-coverage": "^3.0.0", "make-dir": "^4.0.0", "supports-color": "^7.1.0" } }, "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw=="],
+
+    "istanbul-reports": ["istanbul-reports@3.2.0", "", { "dependencies": { "html-escaper": "^2.0.0", "istanbul-lib-report": "^3.0.0" } }, "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA=="],
+
     "jackspeak": ["jackspeak@3.4.3", "", { "dependencies": { "@isaacs/cliui": "^8.0.2" }, "optionalDependencies": { "@pkgjs/parseargs": "^0.11.0" } }, "sha512-OGlZQpz2yfahA/Rd1Y8Cd9SIEsqvXkLVoSw/cgwhnhFMDbsQFeZYoJJ7bIZBS9BcamUW96asq/npPWugM+RQBw=="],
 
     "jake": ["jake@10.9.4", "", { "dependencies": { "async": "^3.2.6", "filelist": "^1.0.4", "picocolors": "^1.1.1" }, "bin": { "jake": "bin/cli.js" } }, "sha512-wpHYzhxiVQL+IV05BLE2Xn34zW1S223hvjtqk0+gsPrwd/8JNLXJgZZM/iPFsYc1xyphF+6M6EvdE5E9MBGkDA=="],
@@ -756,7 +779,7 @@
 
     "jiti": ["jiti@2.6.1", "", { "bin": { "jiti": "lib/jiti-cli.mjs" } }, "sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ=="],
 
-    "js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
+    "js-tokens": ["js-tokens@10.0.0", "", {}, "sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q=="],
 
     "js-yaml": ["js-yaml@4.1.1", "", { "dependencies": { "argparse": "^2.0.1" }, "bin": { "js-yaml": "bin/js-yaml.js" } }, "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA=="],
 
@@ -828,6 +851,10 @@
 
     "magic-string": ["magic-string@0.30.21", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
 
+    "magicast": ["magicast@0.5.3", "", { "dependencies": { "@babel/parser": "^7.29.3", "@babel/types": "^7.29.0", "source-map-js": "^1.2.1" } }, "sha512-pVKE4UdSQ7DvHzivsCIFx2BJn1mHG6KsyrFcaxFx6tONdneEuThrDx0Cj3AMg58KyN4pzYT+LHOotxDQDjNvkw=="],
+
+    "make-dir": ["make-dir@4.0.0", "", { "dependencies": { "semver": "^7.5.3" } }, "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw=="],
+
     "mdn-data": ["mdn-data@2.12.2", "", {}, "sha512-IEn+pegP1aManZuckezWCO+XZQDplx1366JoVhTpMpBB1sPey/SbveZQUosKiKiGYjg1wH4pMlNgXbCiYgihQA=="],
 
     "micromatch": ["micromatch@4.0.8", "", { "dependencies": { "braces": "^3.0.3", "picomatch": "^2.3.1" } }, "sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA=="],
@@ -1020,7 +1047,7 @@
 
     "stackback": ["stackback@0.0.2", "", {}, "sha512-1XMJE5fQo1jGH6Y/7ebnwPOBEkIEnT4QF32d5R1+VXdXveM0IBMJt8zfaxX1P3QhVwrYe+576+jkANtSS2mBbw=="],
 
-    "std-env": ["std-env@3.10.0", "", {}, "sha512-5GS12FdOZNliM5mAOxFRg7Ir0pWz8MdpYm6AY6VPkGpbA7ZzmbzNcBJQ0GPvvyWgcY7QAhCgf9Uy89I03faLkg=="],
+    "std-env": ["std-env@4.2.0", "", {}, "sha512-oCUKSupKTHX53EyjDtuZQ64pjLJ6yYCtpmEw0goYxtjG9KpbRe8KAsl2tBUGU9DyMcJ0RwJ8GqJAFzMXcXW1Rw=="],
 
     "stream-buffers": ["stream-buffers@3.0.3", "", {}, "sha512-pqMqwQCso0PBJt2PQmDO0cFj0lyqmiwOMiMSkVtRokl7e+ZTRYgDHKnuZNbqjiJXgsg4nuqtD/zxuo9KqTp0Yw=="],
 
@@ -1042,7 +1069,7 @@
 
     "strnum": ["strnum@2.1.2", "", {}, "sha512-l63NF9y/cLROq/yqKXSLtcMeeyOfnSQlfMSlzFt/K73oIaD8DGaQWd7Z34X9GPiKqP5rbSh84Hl4bOlLcjiSrQ=="],
 
-    "supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],
+    "supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
 
     "svelte": ["svelte@5.48.0", "", { "dependencies": { "@jridgewell/remapping": "^2.3.4", "@jridgewell/sourcemap-codec": "^1.5.0", "@sveltejs/acorn-typescript": "^1.0.5", "@types/estree": "^1.0.5", "acorn": "^8.12.1", "aria-query": "^5.3.1", "axobject-query": "^4.1.0", "clsx": "^2.1.1", "devalue": "^5.6.2", "esm-env": "^1.2.1", "esrap": "^2.2.1", "is-reference": "^3.0.3", "locate-character": "^3.0.0", "magic-string": "^0.30.11", "zimmerframe": "^1.1.2" } }, "sha512-+NUe82VoFP1RQViZI/esojx70eazGF4u0O/9ucqZ4rPcOZD+n5EVp17uYsqwdzjUjZyTpGKunHbDziW6AIAVkQ=="],
 
@@ -1068,7 +1095,7 @@
 
     "tinyglobby": ["tinyglobby@0.2.15", "", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.3" } }, "sha512-j2Zq4NyQYG5XMST4cbs02Ak8iJUdxRM0XI5QyxXuZOzKOINmWurp3smXu3y5wDcJrptwpSjgXHzIQxR0omXljQ=="],
 
-    "tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+    "tinyrainbow": ["tinyrainbow@3.1.0", "", {}, "sha512-Bf+ILmBgretUrdJxzXM0SgXLZ3XfiaUuOj/IKQHuTXip+05Xn+uyEYdVg0kYDipTBcLrCVyUzAPz7QmArb0mmw=="],
 
     "tldts": ["tldts@7.0.19", "", { "dependencies": { "tldts-core": "^7.0.19" }, "bin": { "tldts": "bin/cli.js" } }, "sha512-8PWx8tvC4jDB39BQw1m4x8y5MH1BcQ5xHeL2n7UVFulMPH/3Q0uiamahFJ3lXA0zO2SUyRXuVVbWSDmstlt9YA=="],
 
@@ -1166,6 +1193,10 @@
 
     "zip-stream": ["zip-stream@6.0.1", "", { "dependencies": { "archiver-utils": "^5.0.0", "compress-commons": "^6.0.2", "readable-stream": "^4.0.0" } }, "sha512-zK7YHHz4ZXpW89AHXUPbQVGKI7uvkd3hzusTdotCg1UxyaVtg0zFJSTfW/Dq5f7OBBVnq6cZIaC8Ti4hb6dtCA=="],
 
+    "@babel/code-frame/js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
+
+    "@babel/types/@babel/helper-validator-identifier": ["@babel/helper-validator-identifier@7.29.7", "", {}, "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg=="],
+
     "@inquirer/core/wrap-ansi": ["wrap-ansi@6.2.0", "", { "dependencies": { "ansi-styles": "^4.0.0", "string-width": "^4.1.0", "strip-ansi": "^6.0.0" } }, "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA=="],
 
     "@inquirer/external-editor/iconv-lite": ["iconv-lite@0.7.2", "", { "dependencies": { "safer-buffer": ">= 2.1.2 < 3.0.0" } }, "sha512-im9DjEDQ55s9fL4EYzOAv0yMqmMBSZp6G0VvFyTMPKWxiSBHUj9NW/qqLmXUwXrrM7AvqSlTCfvqRb0cM8yYqw=="],
@@ -1190,10 +1221,24 @@
 
     "@testing-library/dom/aria-query": ["aria-query@5.3.0", "", { "dependencies": { "dequal": "^2.0.3" } }, "sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A=="],
 
+    "@vitest/expect/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "@vitest/expect/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/pretty-format/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/runner/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
     "@vitest/snapshot/@vitest/pretty-format": ["@vitest/pretty-format@2.1.9", "", { "dependencies": { "tinyrainbow": "^1.2.0" } }, "sha512-KhRIdGV2U9HOUzxfiHmY8IFHTdqtOhIzCpd8WRdJiE7D/HUcZVD0EgQCVjm+Q9gkUXWgBvMmTtZgIG48wq7sOQ=="],
 
     "@vitest/snapshot/pathe": ["pathe@1.1.2", "", {}, "sha512-whLdWMYL2TwI08hn8/ZqAbrVemu0LNaNNJZX73O6qaIdCTfXutsLhMkjdENX0qhsQ9uIimo4/aQOmXkoon2nDQ=="],
 
+    "@vitest/ui/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "@vitest/ui/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
+    "@vitest/utils/@vitest/pretty-format": ["@vitest/pretty-format@4.1.10", "", { "dependencies": { "tinyrainbow": "^3.1.0" } }, "sha512-W1HsjSH4MXQ9YfmmhLAoIYf1HRfekQCGngeIgcei6MP5QQGWUe0gkopdZQaVCFO+JDJMrAJGwa5pRpNpvy4P8Q=="],
+
     "@wdio/reporter/diff": ["diff@8.0.3", "", {}, "sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ=="],
 
     "anymatch/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
@@ -1260,6 +1305,8 @@
 
     "mocha/glob": ["glob@8.1.0", "", { "dependencies": { "fs.realpath": "^1.0.0", "inflight": "^1.0.4", "inherits": "2", "minimatch": "^5.0.1", "once": "^1.3.0" } }, "sha512-r8hpEjiQEYlF2QU0df3dS+nxxSIreXQS1qRhMJM0Q5NDdR386C7jb7Hwwod8Fgiuex+k0GFjgft18yvxm5XoCQ=="],
 
+    "mocha/supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],
+
     "mocha/yargs": ["yargs@16.2.0", "", { "dependencies": { "cliui": "^7.0.2", "escalade": "^3.1.1", "get-caller-file": "^2.0.5", "require-directory": "^2.1.1", "string-width": "^4.2.0", "y18n": "^5.0.5", "yargs-parser": "^20.2.2" } }, "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw=="],
 
     "mocha/yargs-parser": ["yargs-parser@20.2.9", "", {}, "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w=="],
@@ -1298,6 +1345,12 @@
 
     "vitest/@vitest/snapshot": ["@vitest/snapshot@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "magic-string": "^0.30.21", "pathe": "^2.0.3" } }, "sha512-sf6NcrYhYBsSYefxnry+DR8n3UV4xWZwWxYbCJUt2YdvtqzSPR7VfGrY0zsv090DAbjFZsi7ZaMi1KnSRyK1XA=="],
 
+    "vitest/@vitest/utils": ["@vitest/utils@4.0.16", "", { "dependencies": { "@vitest/pretty-format": "4.0.16", "tinyrainbow": "^3.0.3" } }, "sha512-h8z9yYhV3e1LEfaQ3zdypIrnAg/9hguReGZoS7Gl0aBG5xgA410zBqECqmaF/+RkTggRsfnzc1XaAHA6bmUufA=="],
+
+    "vitest/std-env": ["std-env@3.10.0", "", {}, "sha512-5GS12FdOZNliM5mAOxFRg7Ir0pWz8MdpYm6AY6VPkGpbA7ZzmbzNcBJQ0GPvvyWgcY7QAhCgf9Uy89I03faLkg=="],
+
+    "vitest/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
+
     "wait-port/chalk": ["chalk@4.1.2", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],
 
     "wait-port/commander": ["commander@9.5.0", "", {}, "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ=="],
@@ -1328,7 +1381,7 @@
 
     "@jest/types/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "@jest/types/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
+    "@vitest/runner/@vitest/utils/tinyrainbow": ["tinyrainbow@3.0.3", "", {}, "sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q=="],
 
     "@vitest/snapshot/@vitest/pretty-format/tinyrainbow": ["tinyrainbow@1.2.0", "", {}, "sha512-weEDEq7Z5eTHPDh4xjX789+fHfF+P8boiFB+0vbWzpbnbsEr/GRaohi/uMKxg8RZMXnl1ItAi/IUHWMsjDV7kQ=="],
 
@@ -1338,34 +1391,24 @@
 
     "jest-diff/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-diff/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-diff/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-matcher-utils/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-matcher-utils/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-matcher-utils/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-message-util/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-message-util/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jest-message-util/pretty-format/react-is": ["react-is@18.3.1", "", {}, "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg=="],
 
     "jest-util/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "jest-util/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "jszip/readable-stream/string_decoder": ["string_decoder@1.1.1", "", { "dependencies": { "safe-buffer": "~5.1.0" } }, "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg=="],
 
     "lazystream/readable-stream/string_decoder": ["string_decoder@1.1.1", "", { "dependencies": { "safe-buffer": "~5.1.0" } }, "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg=="],
 
     "log-symbols/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "log-symbols/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "mocha/chokidar/readdirp": ["readdirp@3.6.0", "", { "dependencies": { "picomatch": "^2.2.1" } }, "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA=="],
 
     "mocha/find-up/locate-path": ["locate-path@6.0.0", "", { "dependencies": { "p-locate": "^5.0.0" } }, "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw=="],
@@ -1432,8 +1475,6 @@
 
     "wait-port/chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
 
-    "wait-port/chalk/supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
-
     "mocha/chokidar/readdirp/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
 
     "mocha/find-up/locate-path/p-locate": ["p-locate@5.0.0", "", { "dependencies": { "p-limit": "^3.0.2" } }, "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw=="],

docker-compose.yml

@@ -33,6 +33,58 @@ services:
     ports:
       - "5172:5172"  # In case you want to run dev server
 
+  # Linux desktop packages - deb + rpm + pacman into ./dist
+  desktop-linux-build:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      target: desktop-linux-build
+      args:
+        # Defaults to the registry builder (Dockerfile's ARG). Point at a locally
+        # built builder with: BUILDER_IMAGE=jellytau-builder:latest docker compose ...
+        BUILDER_IMAGE: ${BUILDER_IMAGE:-gitea.tourolle.paris/dtourolle/jellytau-builder:latest}
+    container_name: jellytau-desktop-linux-build
+    volumes:
+      - .:/app
+      - cargo-cache:/root/.cargo
+      - bun-cache:/root/.bun
+    environment:
+      - RUST_BACKTRACE=1
+      - OUTPUT_DIR=/app/dist
+    command: bash -c "OUTPUT_DIR=/app/dist scripts/build-desktop-linux.sh"
+
+  # Arch Linux package (.pkg.tar.zst via makepkg) into ./dist
+  arch-build:
+    build:
+      context: .
+      dockerfile: Dockerfile.arch
+    container_name: jellytau-arch-build
+    volumes:
+      - ./dist:/out
+    environment:
+      - RUST_BACKTRACE=1
+      - OUTPUT_DIR=/out
+
+  # Windows cross-compile (MSVC via cargo-xwin). Emits NSIS installer + .exe to
+  # ./dist. Override WIN_BUNDLES=none for exe-only.
+  windows-cross:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      target: windows-cross
+      args:
+        BUILDER_IMAGE: ${BUILDER_IMAGE:-gitea.tourolle.paris/dtourolle/jellytau-builder:latest}
+    container_name: jellytau-windows-cross
+    volumes:
+      - .:/app
+      - cargo-cache:/root/.cargo
+      - bun-cache:/root/.bun
+    environment:
+      - RUST_BACKTRACE=1
+      - OUTPUT_DIR=/app/dist
+      - WIN_BUNDLES=${WIN_BUNDLES:-nsis}
+    command: bash -c "OUTPUT_DIR=/app/dist WIN_BUNDLES=${WIN_BUNDLES:-nsis} scripts/build-windows-cross.sh"
+
   # Development container - for interactive development
   dev:
     build:

docs-site/SUMMARY.md

@@ -0,0 +1,39 @@
+# Summary
+
+[Introduction](README.md)
+
+# Requirements & Traceability
+
+- [Requirements Specification](requirements.md)
+- [Traceability Matrix](traceability.md)
+- [Traceability CI](traceability-ci.md)
+- [Traces Quick Reference](traces-quick-ref.md)
+
+# Architecture
+
+- [Overview](architecture/README.md)
+  - [Rust Backend](architecture/01-rust-backend.md)
+  - [Svelte Frontend](architecture/02-svelte-frontend.md)
+  - [Data Flow](architecture/03-data-flow.md)
+  - [Type Sync & Threading](architecture/04-type-sync-and-threading.md)
+  - [Platform Backends](architecture/05-platform-backends.md)
+  - [Downloads & Offline](architecture/06-downloads-and-offline.md)
+  - [Connectivity](architecture/07-connectivity.md)
+  - [Database Design](architecture/08-database-design.md)
+  - [Security](architecture/09-security.md)
+
+# UX & Specs
+
+- [UX Flows](ux-flows.md)
+- [Video Background Audio](specs/video-background-audio.md)
+
+# Build & Release
+
+- [Build & Release](build-release.md)
+- [Release Checklist](release-checklist.md)
+- [Docker](build/docker.md)
+- [Builder Image](build/build-builder-image.md)
+
+---
+
+[Rust API Reference (rustdoc)](api-redirect.md)

docs-site/book.toml

@@ -0,0 +1,25 @@
+# mdBook config for the published JellyTau documentation site.
+# The book's `src` is the repo `docs/` directory (see [build] below); this file
+# and SUMMARY.md live in docs-site/ to avoid cluttering docs/. The publish-docs
+# CI job copies SUMMARY.md into docs/ at build time, renders, and pushes the
+# result (plus the rustdoc API under /api/) to the orphan `gitea-pages` branch.
+[book]
+title = "JellyTau Documentation"
+description = "Requirements, traceability, and architecture for the JellyTau Jellyfin client."
+authors = ["Duncan Tourolle"]
+language = "en"
+# Sources live in the repo docs/ dir (one level up from this book root).
+src = "../docs"
+
+[output.html]
+default-theme = "navy"
+preferred-dark-theme = "navy"
+git-repository-url = "https://gitea.tourolle.paris/dtourolle/jellytau"
+edit-url-template = "https://gitea.tourolle.paris/dtourolle/jellytau/_edit/master/docs/{path}"
+
+[output.html.fold]
+enable = true
+level = 1
+
+[output.html.search]
+enable = true

docs/architecture/02-svelte-frontend.md

@@ -51,14 +51,19 @@ graph TD
 
 **View Enforcement:**
 
+Ordinal content (where position carries meaning) is always a list. Everything
+else honours the user's persisted grid/list preference — see
+[ux-flows.md §5A.2](../ux-flows.md).
+
 | Content Type | View Mode | Toggle Visible | Component Used |
 |--------------|-----------|----------------|----------------|
-| Tracks | List (forced) | No | `TrackList` |
-| Artists | Grid (forced) | No | `LibraryGrid` with `forceGrid={true}` |
-| Albums | Grid (forced) | No | `LibraryGrid` with `forceGrid={true}` |
-| Playlists | Grid (forced) | No | `LibraryGrid` with `forceGrid={true}` |
-| Genres | Grid (both levels) | No | `LibraryGrid` with `forceGrid={true}` |
-| Album Detail Tracks | List (forced) | No | `TrackList` |
+| Tracks | List (forced — ordinal) | No | `TrackList` |
+| Artists | User preference | Yes | `LibraryGrid` |
+| Albums | User preference | Yes | `LibraryGrid` |
+| Playlists | User preference | Yes | `LibraryGrid` |
+| Genres | User preference (both levels) | Yes | `LibraryGrid` |
+| Album Detail Tracks | List (forced — ordinal) | No | `TrackList` |
+| Season Episodes | List (forced — ordinal) | No | `SeasonSection` |
 
 **TrackList Component:**
 
@@ -80,9 +85,16 @@ The `TrackList` component (`src/lib/components/library/TrackList.svelte`) is a d
 />
 ```
 
-**LibraryGrid forceGrid Prop:**
+**LibraryGrid view mode:**
 
-The `forceGrid` prop prevents the grid/list view toggle from appearing and forces grid view regardless of user preference. This ensures visual content (artists, albums, playlists) is always displayed as cards with artwork.
+`LibraryGrid` reads the global `viewMode` store (persisted to `localStorage`)
+and renders `LibraryListView` or the card grid accordingly. The `showViewToggle`
+prop controls whether the toggle buttons appear in the page header; the grid
+itself always follows the stored preference.
+
+A `forceGrid` prop previously existed to pin pages to grid regardless of
+preference. No caller ever passed it, so it was removed — pages that were
+documented as "forced grid" have in practice always honoured the toggle.
 
 ## Playback Reporting Service
 

docs/build-desktop-packages.md

@@ -0,0 +1,91 @@
+# Desktop packaging (Linux, Arch, Windows)
+
+How to produce distributable desktop packages for JellyTau. All three flows can
+run in Docker so no host toolchain setup is required. Outputs land in `./dist`.
+
+## One builder image (shared with CI)
+
+The deb/rpm and Windows-cross flows build on the **unified registry builder**
+([../Dockerfile.builder](../Dockerfile.builder) →
+`gitea.tourolle.paris/dtourolle/jellytau-builder`), the same image CI uses. It
+carries every packaging tool: Android SDK/NDK, `rpm`/`file` (Linux bundler),
+`cargo-xwin` + `lld` + `llvm` + `nsis` + the `x86_64-pc-windows-msvc` rust target
+(Windows). There is **one** dependency source of truth — no per-stage tool
+installs.
+
+The desktop stages in [../Dockerfile](../Dockerfile) are thin `FROM
+${BUILDER_IMAGE}` environments; the actual build runs at container-run time on
+your bind-mounted source (like the `dev` service), so source edits need no image
+rebuild.
+
+**If you changed `Dockerfile.builder`** (e.g. added a tool), rebuild and push it
+first, or the packaging flows use the stale registry image:
+
+```bash
+scripts/build-builder-image.sh           # build + push :latest to the registry
+# ...or iterate locally without pushing:
+docker build -f Dockerfile.builder -t jellytau-builder:latest .
+BUILDER_IMAGE=jellytau-builder:latest bun run docker:build:windows
+```
+
+Arch uses a separate `archlinux` image ([../Dockerfile.arch](../Dockerfile.arch))
+because `makepkg` is Arch-specific — it is not part of the unified builder.
+
+| Target | Format | Docker command | Functional? |
+|--------|--------|----------------|-------------|
+| Debian/Ubuntu, Fedora | `.deb`, `.rpm` | `bun run docker:build:linux` | ✅ yes |
+| Arch Linux | `.pkg.tar.zst` | `bun run docker:build:arch` | ✅ yes |
+| Windows | NSIS installer + `.exe` | `bun run docker:build:windows` | ✅ yes (unsigned) |
+
+## Linux: deb + rpm
+
+Tauri's bundler produces these natively. The build runs on the existing Ubuntu
+builder image ([../Dockerfile](../Dockerfile), `desktop-linux-build` stage):
+
+```bash
+bun run docker:build:linux            # deb + rpm -> ./dist
+# or, on a host with the Tauri Linux deps installed:
+BUNDLES="deb,rpm" scripts/build-desktop-linux.sh
+```
+
+Runtime dependency: the app links libmpv (audio) and WebKitGTK (webview + HTML5
+transcoded video). The deb/rpm declare these.
+
+> Note: `appimage` is also a valid Tauri target if you want a portable bundle —
+> add it to `BUNDLES`.
+
+## Arch Linux: pacman package
+
+**Tauri has no `pacman` bundle target** (as of tauri-cli 2.9.x — valid targets
+are deb/rpm/appimage/msi/nsis/app/dmg). So we ship a hand-written PKGBUILD in
+[../packaging/arch/PKGBUILD](../packaging/arch/PKGBUILD) and build it with
+`makepkg` on an Arch base image ([../Dockerfile.arch](../Dockerfile.arch)):
+
+```bash
+bun run docker:build:arch             # .pkg.tar.zst -> ./dist
+```
+
+The PKGBUILD is AUR-ready: swap its `source=()` for a release tarball/VCS URL to
+publish. Runtime deps: `webkit2gtk-4.1`, `mpv`, `gtk3`, `libayatana-appindicator`.
+
+`makepkg` refuses to run as root, so the Docker stage builds as a non-root
+`builder` user. Because the image `COPY`s the source at build time, the
+`arch-build` compose service does **not** bind-mount the repo — rebuild the image
+to pick up source changes.
+
+## Windows: NSIS installer cross-compiled from Linux
+
+Produces a working (unsigned) NSIS installer + `.exe` via the official Tauri
+cross-compile path — the `x86_64-pc-windows-msvc` target driven by `cargo-xwin`.
+Video plays via WebView2 and audio via the webview `<audio>` backend. See
+[build-windows.md](build-windows.md) for the full explanation.
+
+```bash
+bun run docker:build:windows                     # NSIS installer + .exe -> ./dist
+WIN_BUNDLES=none bun run docker:build:windows     # exe only, skip bundling
+```
+
+The Docker `windows-cross` stage is a thin layer over the builder, which carries
+`cargo-xwin` + `lld` + `llvm` + `nsis` + the `x86_64-pc-windows-msvc` target.
+Cross-compilation is Tauri's "last resort" path (less tested than building on
+Windows); a `windows-latest` CI job is the fallback if it misbehaves.

docs/build-windows.md

@@ -0,0 +1,78 @@
+# Windows build
+
+JellyTau targets Linux and Android primarily, but a working Windows build —
+including an **NSIS installer cross-compiled from Linux** — is produced by the
+Docker tooling. It is not yet a first-class release target (no code signing / CI
+job / SMTC lockscreen), but it runs and plays media.
+
+## How playback works on Windows
+
+- **Video** — renders through the webview HTML5 `<video>` element (hls.js) on
+  *every* platform; on Windows that is WebView2 (Chromium/Edge), which plays HLS +
+  h264 fine. No Windows-specific code.
+- **Audio-only (music)** — the native audio backends are libmpv (Linux) and
+  ExoPlayer (Android); neither exists on Windows. Instead
+  `create_player_backend()` in [../src-tauri/src/lib.rs](../src-tauri/src/lib.rs)
+  uses `WebviewAudioBackend` on non-Linux/non-Android targets: it hands the stream
+  URL to a webview `<audio>` element (see
+  [../src/lib/services/webviewAudio.ts](../src/lib/services/webviewAudio.ts)),
+  which reports state back through the same `player_report_*` round-trip the video
+  path uses. Pure Rust + Tauri events.
+
+## Cross-compiling from Linux (MSVC + cargo-xwin)
+
+We use the [official Tauri cross-compile path](https://v2.tauri.app/distribute/windows-installer/):
+the **MSVC** target (`x86_64-pc-windows-msvc`) driven by
+[`cargo-xwin`](https://github.com/rust-cross/cargo-xwin), which downloads the MSVC
+CRT / Windows SDK headers and links with `lld`. MSVC is the target Tauri
+officially supports for Windows (mingw/GNU is not), and — unlike GNU — it lets the
+Tauri CLI bundle the **NSIS installer from a Linux host**.
+
+> Why not mingw/GNU? The GNU target *does* link a valid `.exe`, but the Tauri CLI
+> gates `--bundles` by the host OS unless it recognizes a real Windows build.
+> `--runner cargo-xwin --target x86_64-pc-windows-msvc` is what flips it into
+> Windows mode and enables the `nsis`/`msi` bundlers on Linux.
+
+The builder image ([../Dockerfile.builder](../Dockerfile.builder)) bakes in the
+whole toolchain: the `x86_64-pc-windows-msvc` rust target, `cargo-xwin`, `lld`,
+`llvm`, and `nsis`.
+
+```bash
+bun run docker:build:windows            # NSIS installer + .exe -> ./dist
+WIN_BUNDLES=none bun run docker:build:windows   # exe only, skip bundling
+```
+
+Or directly on a host that has the toolchain:
+
+```bash
+scripts/build-windows-cross.sh                    # nsis installer + exe
+WIN_BUNDLES=none scripts/build-windows-cross.sh   # exe only
+```
+
+Under the hood the build runs:
+
+```bash
+tauri build --runner cargo-xwin --target x86_64-pc-windows-msvc --bundles nsis
+```
+
+Outputs:
+- `.exe` — `src-tauri/target/x86_64-pc-windows-msvc/release/jellytau.exe`
+- NSIS installer — `.../release/bundle/nsis/*-setup.exe`
+
+(both copied to `./dist` when `OUTPUT_DIR` is set).
+
+## Caveats
+
+- **Cross-compilation is a last resort** per Tauri's own docs — it's less tested
+  than building on Windows. If it misbehaves, a `windows-latest` CI job or a
+  Windows VM building natively (`tauri build --bundles nsis`) is the fallback.
+- **Code signing is not wired up** — the installer is unsigned, so Windows
+  SmartScreen will warn on first run.
+
+## Outstanding for a first-class Windows release
+
+1. Gapless/crossfade + SMTC (lockscreen) — currently no-ops in the webview audio
+   path.
+2. Downloaded (`Local` source) file playback needs `convertFileSrc` on the
+   frontend; streaming works today.
+3. Code signing + a Windows packaging CI job.

docs/requirements.md

@@ -37,7 +37,7 @@ For a narrative overview of the system design, see
 | UR-024 | View recently added content on server | Medium | Done |
 | UR-025 | Sync watch history and progress back to Jellyfin | High | Done |
 | UR-026 | Sleep timer for audio and video playback (roller UI, time/track/episode modes) | Low | Done |
-| UR-027 | Audio equalizer for sound customization | Low | Planned |
+| UR-027 | Audio equalizer for sound customization | Low | Done (Linux only) |
 | UR-028 | Navigate to artist/album by tapping names in now playing view | High | Done |
 | UR-029 | Toggle between grid and list view in library | Medium | Done |
 | UR-030 | Quick genre browsing and filtering | Medium | Done |
@@ -50,6 +50,26 @@ For a narrative overview of the system design, see
 | UR-037 | Visually appealing video library with poster grids and metadata | High | Done |
 | UR-038 | Movie/show detail page with backdrop, ratings, and rich metadata | High | Done |
 | UR-039 | Navigate between main sections via bottom navigation bar | High | Done |
+| UR-040 | Keep a video's audio playing when the app is backgrounded or the screen is locked, stopping video decode until the app returns to the foreground (per-player toggle; Android) | Medium | Done (pending device verification) |
+| UR-041 | Continue watching *locally-playing video* in a floating picture-in-picture window when leaving the app (Android) — PiP applies to video only, never to audio playback, library/menu browsing, or remote/cast sessions | Medium | Done |
+| UR-042 | Authenticate to a server and manage the session lifecycle (connect, log in, Quick Connect, background session verification, re-authenticate, log out) | High | Done |
+| UR-043 | Automatically detect server reachability and switch between online and offline operation without user intervention | High | Done |
+| UR-044 | Pin downloaded media so it is protected from automatic cache eviction | Low | Done |
+| UR-045 | Predictively pre-cache likely-next media (queue lookahead and album affinity) within a storage budget | Low | Done |
+| UR-046 | Group multiple remote players into a synchronized playback group (LMS SyncGroups) | Low | Done |
+| UR-047 | Manage multiple Jellyfin servers (add, list, remove) and switch the active server/account | Medium | Planned (backend store done; switcher UI pending) |
+| UR-048 | See the next episodes of a series directly below the episode/series being viewed, above cast and similar-shows content, so continuing a show is the shortest path (see [ux-flows.md §5B](ux-flows.md)) | High | Done |
+| UR-049 | Search is scoped by where it was started — inside a library it searches that library, from Home/library-root/search-tab it searches everything — with the scope shown as filter chips under the search bar that preselect from context and can be changed without retyping (see [ux-flows.md §6.1](ux-flows.md)) | High | Implemented |
+| UR-050 | Reorder search result groups (Songs, Albums, Artists, Movies, TV Shows) by drag and drop in settings, so the media a user cares about most appears first (see [ux-flows.md §6.3](ux-flows.md)) | Medium | Implemented |
+| UR-051 | Browse library pages in a consistent layout where card shape signals media type (square music, poster video, thumbnail episode), ordinal content stays listed, and the grid/list preference persists across pages (see [ux-flows.md §5A](ux-flows.md)) | Medium | Partial (implemented; toggle not reachable from settings) |
+| UR-052 | While offline, library pages show only media available on the device by default, with an opt-in toggle that additionally reveals the cached server catalog as greyed-out entries which can be queued for download on the next reconnect | High | Done |
+| UR-053 | Restrict media downloads to unmetered networks via a "WiFi Only" setting: when enabled, queued downloads are held while the device is on cellular or a metered connection (including metered WiFi hotspots) and resume automatically once an unmetered network is available | Medium | Done (pending device verification) |
+| UR-054 | Reach account actions (Settings, Downloads, Display preferences, Sign out) from every authenticated screen via a single account menu anchored to the user's name, identical on desktop and mobile (see [ux-flows.md §1.2](ux-flows.md)) | High | Done |
+| UR-055 | Browse downloaded media as an offline-scoped library — reusing the same library grids, cards, and detail pages as online browsing, showing only libraries/containers with downloaded content — with the transfer-progress list demoted to a secondary "Transfers" view (see [ux-flows.md §7.2](ux-flows.md)) | High | Done |
+| UR-056 | See how much disk each downloaded item/album/series consumes, in familiar rounded units shown on the card and detail page, with a device total on the Downloaded surface and a reclaim amount stated at the point of removal (see [ux-flows.md §7.3.1](ux-flows.md)) | Medium | Done |
+| UR-057 | Settings apply the instant a control is changed — no "Save" button and no save/dirty state — so leaving the page never loses a change; sliders show a live readout while dragging but persist on release (see [ux-flows.md §8.1](ux-flows.md)) | Medium | Done |
+| UR-058 | On the home screen, a tap on a media card opens the item (movie/episode detail page, or the series Episode Focus View for episodes) rather than starting playback; a long-press starts "play now" after a confirm; an episode detail/focus page links back to its parent series and season (see [ux-flows.md §5B.5](ux-flows.md) and [§5B.1](ux-flows.md)) | Medium | Done |
+| UR-059 | Skipping to the next episode records the episode left behind as **fully watched** rather than saving a mid-episode resume point — skipping means "done with this one", not "stopped here" — and Continue Watching hides episodes the viewer has already moved past (a partial position behind that series' next-up episode), so the row only ever offers genuinely unfinished media | Medium | Done |
 
 ---
 
@@ -81,10 +101,15 @@ External system integrations and platform-specific implementations.
 | IR-017 | Jellyfin API client for transcoding parameters | API | UR-022 | Planned |
 | IR-018 | libmpv subtitle rendering and selection | Playback | UR-020 | Planned |
 | IR-019 | libmpv audio track selection | Playback | UR-021 | Planned |
-| IR-020 | libmpv/ExoPlayer equalizer integration | Playback | UR-027 | Planned |
+| IR-020 | libmpv/ExoPlayer equalizer integration | Playback | UR-027 | Done (Linux/MPV; Android parity pending) |
 | IR-022 | Jellyfin API client for person/cast data | API | UR-035, UR-036 | Done |
 | IR-023 | Database schema for person/cast caching | Storage | UR-035, UR-036 | Done |
 | IR-024 | Jellyfin API client for home screen data (featured, continue watching) | API | UR-034 | Done |
+| IR-025 | Android background-audio handoff: WebView `<video>` → native ExoPlayer foreground service on background/lock, and back on foreground (audio continues, video decode stops) | Platform | UR-040 | Done (pending device verification) |
+| IR-026 | Android picture-in-picture: auto-enter on user-leave-hint via `enterPictureInPictureMode`, **only while a local video surface is actively rendering** (never for audio-only playback, menu/library browsing, or remote/cast sessions — enforced by the native `canEnterPip` guard, re-checked at leave time); aspect-ratio sizing; a play/pause RemoteAction that **reflects live player play/pause state** (updated whenever playback state changes, not only on button press); WebView hide/restore on mode change | Platform | UR-041 | Done |
+| IR-027 | Jellyfin `/System/Info/Public` reachability probe used as an offline→online recovery detector | API | UR-043 | Done |
+| IR-028 | Jellyfin/LMS SyncGroups API client (list, create, join, unsync, dissolve sync groups) | API | UR-046 | Done |
+| IR-029 | Android `ConnectivityManager`/`NetworkCapabilities` transport probe with a `NetworkCallback` change subscription, surfaced to the frontend via the `AndroidNetworkType` JS bridge and the `jellytau-network-changed` WebView event (requires `ACCESS_NETWORK_STATE`) | Platform | UR-053 | Done (pending device verification) |
 
 ### 2.2 Jellyfin API Requirements
 
@@ -123,6 +148,7 @@ API endpoints and data contracts required for Jellyfin integration.
 | JA-029 | Get cast/crew for item (actors, directors) | Items | UR-035 | Done |
 | JA-030 | Get person details and filmography | Persons | UR-036 | Done |
 | JA-031 | Get items by person (actor/director filmography) | Items | UR-036 | Done |
+| JA-032 | Get audio-only stream URL for a video item (selected audio-stream index) | MediaInfo | UR-040 | Done |
 
 ### 2.3 Development Requirements
 
@@ -161,7 +187,7 @@ Internal architecture, components, and application logic.
 | DR-029 | Sleep timer with roller UI, time/track/episode modes, and auto-stop (audio + video players) | Player | UR-026 | Done |
 | DR-049 | Auto-play episode limit (configurable max episodes per session) | Player | UR-023 | Done |
 | DR-050 | Reusable scroll picker (roller) component | UI | UR-026 | Done |
-| DR-030 | Equalizer UI with presets and custom bands | UI | UR-027 | Planned |
+| DR-030 | Equalizer UI with presets and custom bands | UI | UR-027 | Done |
 | DR-031 | Clickable artist/album links in now playing view | UI | UR-028 | Done |
 | DR-032 | List view option for library browsing (albums, artists) | UI | UR-029 | Done |
 | DR-033 | Genre browsing screen with quick filters | UI | UR-030 | Done |
@@ -180,6 +206,42 @@ Internal architecture, components, and application logic.
 | DR-046 | Dedicated search page with input and results | UI | UR-039 | Done |
 | DR-047 | Next episode auto-play popup with configurable countdown and episode limit | Player | UR-023 | Done |
 | DR-048 | Video settings (auto-play toggle, countdown duration, episode limit) | Settings | UR-023, UR-026 | Done |
+| DR-051 | Background-audio toggle button in the video player controls (suppresses auto-PiP while enabled) | UI | UR-040 | Done (pending device verification) |
+| DR-052 | Background-audio handoff state machine: on background/lock tear down the WebView `<video>`/HLS decode and start native audio-only playback at the current position; on foreground return position and resume `<video>`; exactly one audio source active at every transition (no dual audio) | Player | UR-040 | Done (pending device verification) |
+| DR-053 | PictureInPictureManager: `canEnterPip` gate (local video surface actively rendering — false for audio, browsing, and remote/cast), aspect-ratio clamp, a RemoteAction play/pause receiver whose icon reflects live player state (refreshed on every playback-state change while in PiP, not only on button press), WebView hide/restore, surface re-fit on exit; plus the `AndroidPictureInPicture` JS bridge and the PiP button (shown only when PiP is supported) in the video player | UI | UR-041 | Done |
+| DR-054 | Auth manager and session lifecycle: connect-to-server, login, Quick Connect verification poll (start/stop), session get/set, background session verifier, re-authenticate, logout | Auth | UR-042 | Done |
+| DR-055 | ConnectivityMonitor deriving reachability from real repository traffic, with online/offline state, mark-reachable/unreachable reporting, and a probe-based recovery poller active only while offline | Connectivity | UR-043 | Done |
+| DR-056 | Download pinning (pin/unpin/is-pinned) that excludes an item from smart-cache eviction | Storage | UR-044 | Done |
+| DR-057 | Smart cache manager: album-affinity tracking, queue-lookahead pre-cache, storage-limit enforcement, config, stats, and recommendations | Storage | UR-045 | Done |
+| DR-058 | Remote sync-group control (LMS SyncGroups): list, create, unsync a player, dissolve a group | Player | UR-046 | Done |
+| DR-059 | Playback-mode transfer state machine: get/set current mode, transferring guard, transfer-to-remote / transfer-to-local, remote session status | Player | UR-010 | Done |
+| DR-060 | Multi-server store and active-account selection: save/get/delete server, save/get user, set/get active user (per-server), active-session resolution | Storage | UR-047 | Partial (store done; server-switcher UI pending) |
+| DR-061 | Episode Focus View: episode hero followed *immediately* by the "More Episodes" strip — a forward-biased window (~3 before / ~6 after) around the current episode, spanning season boundaries in series order, with the current episode present and badged, per-card resume progress and watched state, and click-to-swap focus (no playback) | UI | UR-048 | Done |
+| DR-062 | Detail-page section ordering: continuation content precedes discovery content — Episode Focus View renders hero → episode strip → cast → similar; Series renders hero → seasons/episodes → cast → similar | UI | UR-048 | Done |
+| DR-063 | Search scope resolver mapping the originating route to an `includeItemTypes` set (All / Music / Movies / TV), defaulting to All for Home, `/library`, and the search tab | UI | UR-049 | Implemented |
+| DR-064 | Scope chip row rendered under the search bar on both the search page and the in-library header search: preselected from context, horizontally scrollable, re-runs the search preserving the query on change | UI | UR-049 | Implemented |
+| DR-065 | Thread `SearchOptions.includeItemTypes` through `library.search()` so the global/header search honours scope (backend online + offline paths already support it) | UI | UR-049 | Implemented |
+| DR-066 | Persisted search result group order with a drag-and-drop settings list, keyboard-accessible reordering, a shipped default (Songs → Albums → Artists → Movies → TV Shows), and empty-group omission | Settings | UR-050 | Implemented |
+| DR-067 | `SearchResults` renders groups in the user-configured order rather than hardcoded markup order, without altering intra-group ranking | UI | UR-050 | Implemented |
+| DR-068 | Library card shape by media type: 1:1 square for music (circular mask for artists), 2:3 poster for movies/series/seasons, 16:9 for episodes and collection folders | UI | UR-051 | Done |
+| DR-069 | Responsive library grid (2/3/4/5/6 columns across base→xl) with two-line truncated card text and artwork-overlay progress/watched state | UI | UR-051 | Done |
+| DR-070 | Global persisted grid/list view preference honoured by browse pages, suppressed for ordinal content (album tracks, season episodes) | UI | UR-051, UR-029 | Partial (persisted store + page-header toggle; no settings entry) |
+| DR-075 | Shared `AccountMenu` component: identity header (user + server), Downloads / Settings / Display entries, divider, Sign out last; anchored to the username/avatar trigger and identical on desktop and mobile | UI | UR-054 | Done |
+| DR-076 | App shell exposes the header (and therefore the account menu) on every authenticated non-immersive route, including `/`, `/search`, and `/downloads`; only `/player/*` and `/login` remain chrome-free | UI | UR-054 | Done |
+| DR-077 | Display section in Settings binding the existing persisted grid/list `viewMode` store, giving the preference a discoverable home | Settings | UR-054, UR-029 | Done |
+| DR-078 | Catalog-visibility gate spanning the "Show all server media" toggle → `set_show_server_catalog` → `INCLUDE_CATALOG_BROWSE` → the synced-catalog UNION branch of offline `get_items`. Visibility resolves to `serverReachable \|\| showServerCatalog`, so offline with the toggle off lists downloaded/local media only | Storage | UR-052, UR-002 | Done |
+| DR-079 | `isConnected` derives from backend-reported server reachability alone; `navigator.onLine` is advisory and may only trigger a recheck, never force or clear the offline state (a reachable LAN server while the browser reports offline, and an unreachable server on a live link, must both resolve correctly) | Connectivity | UR-052, UR-043 | Done |
+| DR-080 | With the catalog-browse gate off, an empty offline `get_items` result is authoritative "no downloads here" and must be returned as-is; the hybrid repository must not treat it as a cache miss and fall through to the server | Storage | UR-052, UR-013 | Done |
+| DR-074 | WiFi-only download gate: `NetworkState`/`NetworkType` transport model reported from the platform via `set_network_state`, checked in `pump_download_queue` before starting any pending row (cellular/metered/unknown fail closed, WiFi and Ethernet require `NOT_METERED`); blocked rows stay `pending` and re-pump on network change, with a `waitingForNetwork` event driving the "Waiting for WiFi" notice. Also wires the previously inert Smart Caching / Queue Pre-caching / WiFi Only settings toggles to `CacheConfig` | Downloads | UR-053 | Done (pending device verification) |
+| DR-081 | `/downloads` split into a default **Downloaded** browse view and a secondary **Transfers** activity view, with a view switch and a Transfers badge shown only while transfers are active | UI | UR-055 | Done |
+| DR-082 | Offline-scoped browse entry point in the repository client: browse downloaded content only (offline repository `get_items`/`get_libraries` — downloaded items plus their containers) independent of server reachability, without merging server catalog | Storage | UR-055 | Done |
+| DR-083 | Downloaded browse reuses library grids, cards, and detail pages via the offline-scoped source; omits libraries/containers with no downloaded content; badges partially- vs fully-downloaded containers; play uses the local file; remove available at item/album/season/series level | UI | UR-055 | Done |
+| DR-084 | Transfers view renders only in-flight rows (downloading/queued/paused/failed/waiting-for-WiFi) with Pause/Resume/Cancel/Retry; completed transfers leave the view and appear in Downloaded | UI | UR-055 | Done |
+| DR-085 | Per-item on-disk size: stat downloaded files, aggregate to album/season/series subtotals and a device total, format in consistent rounded human units; surface size on cards and detail pages, the device total on the Downloaded surface, and a reclaim figure in the remove confirmation | Downloads | UR-056 | Done |
+| DR-086 | Settings page persists each control on change via per-group writers (`playerSetAudioSettings` / `playerSetVideoSettings` / `updateCacheConfig`) rather than a batch Save action; slider controls persist on `change` (pointer release) not each `input` tick; no Save button, `saving`, or `saveMessage` state | Settings | UR-057 | Done |
+| DR-087 | `MediaCard` gains an `onLongPress` prop with pointer-based long-press detection (~500 ms hold, cancelled on >10 px move so carousel scroll is unaffected, trailing click suppressed); home carousels wire tap→detail/focus routing and long-press→confirm→player; episode taps route to `/library/<seriesId>?episode=<id>`; the bare-episode detail page links to its parent series/season | UI | UR-058 | Done |
+| DR-088 | Skip-to-next-episode marks the outgoing episode played (`markAsPlayed`) instead of reporting a stop position, and arms a one-shot suppression consumed by the player's stop handler so `VideoPlayer`'s post-navigation unmount stop report cannot overwrite the 100% progress with the partial position | UI | UR-059 | Done |
+| DR-089 | Continue Watching suppresses resume entries superseded by Next Up: an in-progress episode whose series has a next-up entry strictly later in series order (season, then episode) is dropped from the Home and TV rows; movies, series without a next-up entry, and items with unknown/mixed episode ordering are always kept | UI | UR-059 | Done |
 
 ---
 
@@ -198,7 +260,7 @@ Internal architecture, components, and application logic.
 | UR-007 | IR-010 | DR-007, DR-008, DR-016 |
 | UR-008 | IR-010 | DR-007, DR-011 |
 | UR-009 | IR-009, IR-010, IR-011 | - |
-| UR-010 | IR-012, IR-021 | DR-037 |
+| UR-010 | IR-012, IR-021 | DR-037, DR-059 |
 | UR-011 | IR-013 | DR-003, DR-015, DR-018 |
 | UR-012 | IR-009, IR-014 | - |
 | UR-013 | IR-013 | DR-017 |
@@ -228,6 +290,25 @@ Internal architecture, components, and application logic.
 | UR-037 | IR-010 | DR-042 |
 | UR-038 | IR-010 | DR-043 |
 | UR-039 | - | DR-045, DR-046 |
+| UR-040 | IR-025 | DR-051, DR-052 |
+| UR-041 | IR-026 | DR-053 |
+| UR-042 | IR-009, IR-014 | DR-054 |
+| UR-043 | IR-027 | DR-055 |
+| UR-044 | - | DR-056 |
+| UR-045 | - | DR-057 |
+| UR-046 | IR-028 | DR-058 |
+| UR-047 | IR-013 | DR-060 |
+| UR-048 | - | DR-061, DR-062 |
+| UR-049 | IR-010 | DR-063, DR-064, DR-065 |
+| UR-050 | - | DR-066, DR-067 |
+| UR-051 | - | DR-068, DR-069, DR-070 |
+| UR-052 | IR-027 | DR-078, DR-079, DR-080 |
+| UR-053 | IR-029 | DR-074 |
+| UR-054 | - | DR-075, DR-076, DR-077 |
+| UR-055 | - | DR-081, DR-082, DR-083, DR-084 |
+| UR-056 | - | DR-085 |
+| UR-057 | - | DR-086 |
+| UR-058 | - | DR-087 |
 
 ---
 
@@ -295,6 +376,28 @@ Internal architecture, components, and application logic.
 | UT-056 | Playlist entry serialization | DR-019, JA-019 | Done |
 | UT-057 | Playlist Tauri command param naming (camelCase) | DR-019, JA-019, JA-020 | Done |
 | UT-058 | Playlist repository client methods | DR-019, JA-019, JA-020 | Done |
+| UT-059 | Audio-only stream URL builder for a video item (selected audio-stream index) | JA-032, DR-052 | Pending |
+| UT-060 | Background-audio handoff state machine (background→audio, foreground→video; no dual audio) | DR-052 | Pending |
+| UT-061 | Background-audio Tauri command param naming (camelCase) | DR-052 | Pending |
+| UT-067 | Offline `get_items` gates the synced-catalog UNION on the catalog-browse flag (downloads only when off, full catalog when on) | DR-078 | Done |
+| UT-068 | Catalog visibility resolves to `serverReachable \|\| showServerCatalog`, and is pushed to the backend on every change of either input | DR-078, DR-079 | Done |
+| UT-069 | `isConnected` follows backend reachability alone: false when the server is unreachable on a live link, true for a reachable server while `navigator.onLine` is false | DR-079 | Done |
+| UT-070 | Hybrid `get_items` returns an empty offline result as-is when the catalog-browse gate is off, without querying the server | DR-080 | Done |
+| UT-066 | WiFi-only download gate: cellular and metered WiFi blocked, unmetered WiFi/Ethernet allowed, unknown/none fail closed, desktop default ungated; plus the frontend network reporter (transport reporting, change subscription, teardown, fail-open queries) | DR-074 | Done |
+| UT-071 | Byte-size formatter: zero/negative/non-finite → "0 B"; decimal unit thresholds; 2–3 significant-figure banding; trailing-zero trimming; largest-unit cap | DR-085 | Done |
+| UT-072 | Downloaded-only browse returns a downloaded leaf and its container, filtered to the requested album parent; a non-downloaded sibling is omitted | DR-082, DR-083 | Done |
+| UT-073 | An empty downloaded-only browse is authoritative — no rows, no error — regardless of the catalog-browse flag | DR-082 | Done |
+| UT-074 | Only libraries with downloaded content are listed; an empty one is omitted | DR-082 | Done |
+| UT-075 | Disk usage reports a leaf's own size, a container's summed descendants, and reconciles the device total with the sum of leaves | DR-085 | Done |
+| UT-076 | Downloaded library browse lists album containers, not their individual tracks; drilling into the album returns the tracks | DR-082, DR-083 | Done |
+| UT-077 | Downloaded TV library browse lists the series, not seasons/episodes; drilling returns the season then the episode | DR-082, DR-083 | Done |
+| UT-078 | A downloaded leaf with no cached container (e.g. a movie) still surfaces at the library level | DR-082, DR-083 | Done |
+| UT-079 | Each EQ preset returns a 10-band gain curve within range; Flat is all zeros; Bass Boost lifts lows and leaves highs flat | DR-030 | Done |
+| UT-080 | `with_equalizer_normalised` clamps out-of-range gains and forces the band vector to exactly 10 entries (pad short, truncate long) | DR-030 | Done |
+| UT-081 | Old persisted AudioSettings JSON without EQ fields loads as disabled + flat | DR-030 | Done |
+| UT-082 | EQ fields serialize as camelCase (`equalizerEnabled`/`equalizerBands`) and round-trip | DR-030 | Done |
+| UT-083 | EQ filter entries are empty when disabled or when the curve is flat (clears the `af` filter) | IR-020 | Done |
+| UT-084 | Enabled EQ builds one peaking `equalizer` per non-zero band at the right frequency and gain inside a single `lavfi` chain | IR-020 | Done |
 
 ### Integration Tests
 
@@ -312,6 +415,9 @@ Internal architecture, components, and application logic.
 | IT-010 | Playback progress sync to Jellyfin | IR-015, UR-025 | Pending |
 | IT-011 | Resume playback from server position | IR-015, UR-019 | Pending |
 | IT-012 | Equalizer bands via libmpv | IR-020, UR-027 | Pending |
+| IT-013 | Background-audio handoff on Android: background/lock continues audio via native service and stops video decode; foreground resumes video at position | IR-025, UR-040 | Pending |
+| IT-016 | Offline library listing end-to-end: with the server unreachable, a library page lists only downloaded media with the toggle off, and additionally reveals greyed-out cached catalog entries with the toggle on | UR-052, DR-078, DR-079, DR-080 | Done |
+| IT-017 | A download queued from a greyed-out offline catalog entry persists and is resolved and started on reconnect | UR-052, UR-011 | Done |
 
 ---
 

docs/specs/SPEC-REVIEW-CHECKLIST.md

@@ -0,0 +1,68 @@
+# Spec review checklist
+
+Run a spec past this before accepting it. It exists because JellyTau's
+backend/frontend boundary is a **stated rule with, historically, no gate** — the
+rule lived in the architecture docs, but nothing forced a spec author to check a
+new design against it, and a "minimal-change" spec quietly leaked domain
+taxonomy into the frontend (see [scoped-search-boundary.md](scoped-search-boundary.md)).
+This checklist is the human gate. The CI check
+(`scripts/check-frontend-boundary.sh`) is only a crude tripwire for one leak
+signature — it does **not** replace this.
+
+Copy the boxes into the review comment (or the PR) and tick them.
+
+## Boundary (the one that bites)
+
+- [ ] **The spec has a filled-in "Layer assignment" table**, and it assigns
+      *logic*, not files. A spec without this section is not ready to review.
+- [ ] **No domain vocabulary is placed in the frontend.** In particular: Jellyfin
+      item-type sets that define a *category* (what "Music"/"TV"/"Movies" means),
+      query-shaping rules, business rules, reachability/sync policy. If the
+      frontend names a *set* of item types to define a category, that is a leak —
+      it belongs behind an opaque enum the backend expands.
+- [ ] **"The backend already accepts this parameter" was not used as the reason**
+      to place the deciding logic in the frontend. Accepting a parameter ≠ owning
+      the decision of its value.
+- [ ] **The `Scope:` / effort framing is not optimizing for "least backend
+      change."** "Frontend only, no Rust changes" is a description, never a goal.
+      The goal is *correct layer placement*; sometimes that is more Rust work.
+- [ ] Ran the litmus test on each borderline responsibility: *would it change if
+      Jellyfin's API changed?* → Rust. *Only if the UI were redesigned?* →
+      frontend. Borderline defaults to Rust.
+- [ ] Single-type presentation (`itemType: "Movie"`, "this page shows albums")
+      is **not** over-corrected into the backend. The rule targets category
+      *taxonomy*, not every mention of a type. Don't invent a backend enum per
+      list page.
+
+## IPC contract
+
+- [ ] Anything crossing the boundary has its wire shape specified.
+- [ ] camelCase rule accounted for: top-level params auto-convert; nested structs
+      get `#[serde(rename_all = "camelCase")]`; tagged unions match tags on both
+      sides; events are kebab-case. (CLAUDE.md §IPC,
+      [04-type-sync-and-threading.md](../architecture/04-type-sync-and-threading.md).)
+- [ ] Any result that arrives *twice* (command return **and** a later event —
+      e.g. the search cache/server merge) has **both** payloads in the new shape.
+- [ ] `bindings.ts` is regenerated from Rust, not hand-edited.
+
+## Requirements & traceability
+
+- [ ] Linked to existing URs, or new URs/DRs are allocated in
+      [requirements.md](../requirements.md).
+- [ ] Requirement-implementing code will carry `// TRACES:` comments (CLAUDE.md).
+- [ ] Traceability coverage stays ≥ 50% (the CI gate).
+
+## Conflicts & hygiene
+
+- [ ] If this spec revises/supersedes another, the older spec gets a banner
+      pointing here — no two specs silently contradicting.
+- [ ] Acceptance criteria include the standard gates: `bun run check`,
+      `bun run test`, `bun run check:boundary`, and (if Rust changed)
+      `cargo fmt`/`cargo clippy`/`bun run test:rust`.
+- [ ] Notes flag that a parallel Claude session may be active in the repo.
+
+---
+
+**If any Boundary box can't be ticked, the spec is not ready** — fix the layer
+assignment first. Every other section can be negotiated; that one is the whole
+reason this file exists.

docs/specs/SPEC-TEMPLATE.md

@@ -0,0 +1,105 @@
+# Spec: <feature name>
+
+<!--
+  Copy this file to docs/specs/<kebab-name>.md and fill it in. Delete the HTML
+  comments as you go. The section that matters most for this project is
+  "Layer assignment" — read its comment before writing it.
+
+  Before merging a spec, run it past docs/specs/SPEC-REVIEW-CHECKLIST.md.
+-->
+
+**Status:** Proposed <!-- Proposed | Accepted | Implemented | Superseded -->
+**Requirements:** <!-- UR-xxx → DR-yyy; allocate new DRs in requirements.md. -->
+**UX spec:** <!-- link to the relevant ux-flows.md section, or "n/a". -->
+**Supersedes / revises:** <!-- link any spec this changes, or delete this line. -->
+
+## Summary
+
+<!-- 2–4 sentences. What changes for the user, in plain terms. -->
+
+## Motivation
+
+<!-- Why now. The problem being solved. -->
+
+## Layer assignment
+
+<!--
+  🔴 THIS IS THE SECTION THAT KEEPS THE ARCHITECTURE HONEST. Do not skip it, and
+  do NOT reframe it as "how little backend work can we get away with."
+
+  The project rule (CLAUDE.md, architecture/02-svelte-frontend.md): the Rust
+  backend owns ALL business logic — auth, catalog, sessions, downloads, offline,
+  playback, AND domain vocabulary (e.g. what Jellyfin item types the category
+  "Music" means). The Svelte frontend is PRESENTATION ONLY: rendering, layout,
+  navigation, view/order preferences, input handling.
+
+  For each distinct piece of *logic* this feature introduces, put it in the table
+  and name the layer it belongs to and WHY. "It's less work in the frontend" and
+  "the backend already accepts this parameter" are NOT reasons to place logic in
+  the frontend — the backend accepting a parameter does not make deciding that
+  parameter's value a presentation concern.
+
+  Litmus test for "does this belong in Rust?": Would this logic have to change if
+  Jellyfin changed its API, added an item type, or altered a business rule? If
+  yes, it is domain logic → Rust. Would it change if we redesigned the UI? If
+  yes (and only yes), it is presentation → frontend.
+
+  A past incident: scoped-search.md placed the item-type taxonomy (what "Music"
+  means as a set of Jellyfin types) in the frontend because the backend already
+  accepted an includeItemTypes filter. That was a boundary leak; see
+  scoped-search-boundary.md. This section exists to catch that class of mistake
+  at spec time, not in review three features later.
+-->
+
+| Logic / responsibility | Layer | Why it belongs there |
+|------------------------|-------|----------------------|
+| <!-- e.g. scope → item-types --> | Rust | <!-- domain vocabulary; changes with Jellyfin's API --> |
+| <!-- e.g. group display order --> | Frontend | <!-- pure presentation; changes only if UI is redesigned --> |
+
+<!--
+  If a row is genuinely borderline, say so and give the tie-breaker you used.
+  Borderline defaults to Rust for anything touching domain data or vocabulary.
+-->
+
+## Design
+
+<!--
+  How it works. Wire shapes for anything crossing the IPC boundary. Remember:
+  - Command NAME must match the Rust fn name exactly.
+  - Top-level params auto-convert snake_case → camelCase (Tauri v2).
+  - Nested struct fields need #[serde(rename_all = "camelCase")].
+  - Events are kebab-case.
+  (See CLAUDE.md §IPC and architecture/04-type-sync-and-threading.md.)
+
+  Regenerate bindings.ts from Rust types; never hand-edit it.
+-->
+
+## Out of scope
+
+<!-- What this spec deliberately does NOT do. -->
+
+## Acceptance criteria
+
+<!-- Checkable statements. Include the standard gates: -->
+
+- [ ] `bun run check` and `bun run test` pass.
+- [ ] `cargo fmt` clean, `cargo clippy` clean, `bun run test:rust` passes (if Rust changed).
+- [ ] `bun run check:boundary` passes (no taxonomy leak into the frontend).
+- [ ] New requirement-implementing code carries `// TRACES:` comments.
+- [ ] `bindings.ts` regenerated if Rust types changed.
+
+## Testing
+
+<!-- Rust: cargo test. Frontend: vitest, src/lib/**/*.test.ts. What to cover. -->
+
+## TRACES
+
+<!-- Suggested tags per new/changed piece: UR-xxx | DR-yyy | tests. -->
+
+## Notes for the implementer
+
+<!--
+  - A parallel Claude session may be active in this repo — `git diff` before
+    "repairing" unexpected changes (see project memory / CLAUDE.md gotchas).
+  - Anything else non-obvious.
+-->

docs/specs/account-menu.md

@@ -0,0 +1,164 @@
+# Spec: Account menu and global chrome availability
+
+**Status:** Implemented
+**Scope:** Frontend only. No Rust changes required.
+**Requirements:** UR-054 → DR-075, DR-076, DR-077 (see
+[requirements.md](../requirements.md)).
+**UX spec:** [ux-flows.md §1.2–1.4](../ux-flows.md).
+
+## Summary
+
+Account actions — Settings, Downloads, Display preferences, Sign out — are
+currently reachable **only from `/library/*`**. Move them into a single shared
+account menu anchored to the user's name, and make that menu available on every
+authenticated non-immersive screen.
+
+## Motivation
+
+A user sitting on the home screen cannot open Settings or sign out. The bottom
+nav offers Home / Search / Library only, and the header that hosts those actions
+belongs to the library layout. The user has to guess that account actions live
+*inside* Library — an unrelated section — and navigate there first.
+
+Desktop and mobile also disagree today: desktop shows an unlabeled logout icon
+with no grouped menu, mobile shows a three-dot overflow with labelled items. The
+same two actions are found two different ways.
+
+## Background: verified current state
+
+1. **The header is not global.** It is defined in
+   [library/+layout.svelte](../../src/routes/library/+layout.svelte). The root
+   layout [+layout.svelte](../../src/routes/+layout.svelte) renders no header at
+   all.
+
+2. **`routeOwnsLayout`** in
+   [layoutShell.ts](../../src/lib/utils/layoutShell.ts) returns true for
+   `/library`, `/player/`, `/login` — those routes own their own full-height
+   flex column. Everything else renders into the root scroller with the root's
+   `BottomUi` below it.
+
+3. **Bottom nav is Home / Search / Library only**
+   ([BottomNav.svelte](../../src/lib/components/BottomNav.svelte)) — no Settings
+   or account entry.
+
+4. **Net effect:** on `/`, `/search`, and `/downloads` there is no route to
+   Settings or Sign out.
+
+5. **Desktop username is inert text** — a `<span>` next to the icons, not a
+   trigger.
+
+6. **The mobile overflow menu already has the right contents** (Downloads,
+   Settings, divider, Sign out) and the right dismissal behaviour (backdrop
+   click, keyboard handler). **Extract and reuse it rather than rewriting it.**
+
+7. **`viewMode` is already a persisted store** in
+   [library.ts](../../src/lib/stores/library.ts) (`jellytau-view-mode`,
+   `localStorage`). The Display setting is a second view onto it — **no new
+   state, no migration.**
+
+## Design
+
+### `AccountMenu` component (DR-075)
+
+One component used by both breakpoints. Contents in fixed order:
+
+```
+Signed in as <name>        ← identity block, not interactive
+<server host>
+────────────────────────
+Downloads
+Settings
+Display                    ← grid/list preference
+────────────────────────
+Sign out                   ← destructive, last, after a divider
+```
+
+- **Trigger is the username/avatar**, not a bare three-dot icon. On mobile where
+  horizontal space is tight, the avatar (or initial) alone is acceptable; the
+  name shows inside the open menu regardless.
+- **Same items, same order, both platforms.**
+- Preserve the existing dismissal behaviour: click-outside backdrop, `Escape`,
+  and focus return to the trigger on close.
+- Menu items are real links/buttons — keyboard reachable, correct roles,
+  `aria-expanded` on the trigger.
+
+"Display" may either navigate to the Settings Display section or expose the
+grid/list choice inline. Prefer navigating — it keeps one source of truth for
+preferences and avoids a nested control inside a dropdown.
+
+### Global chrome (DR-076)
+
+Make the header — and therefore the account menu — available on `/`, `/search`,
+and `/downloads`.
+
+The cleanest route is to lift the header out of the library layout into a shared
+component rendered by the root layout, with the library layout consuming the
+same component rather than defining its own. **Do not duplicate the markup into
+each route.**
+
+Constraints that must survive the change:
+
+- `/player/*` and `/login` stay chrome-free.
+- `/settings` already owns its layout; it needs no account menu (the user is
+  already there), but must not double up on chrome.
+- The root layout's flex/scroller structure is deliberate — the comments in
+  [layoutShell.ts](../../src/lib/utils/layoutShell.ts) and
+  [+layout.svelte](../../src/routes/+layout.svelte) explain why routes own their
+  own column. Preserve the scroll containment; a regression here reintroduces
+  the "last row hidden behind the nav" bug called out in those comments.
+- Mini-player and bottom-nav visibility rules (`showGlobalMiniPlayer`,
+  `showBottomNav`) must be unchanged.
+
+### Display section in Settings (DR-077)
+
+Add a Display section to [settings/+page.svelte](../../src/routes/settings/+page.svelte)
+with the grid/list control bound to the existing `viewMode` store via
+`library.setViewMode(...)`. The page-header toggle in `LibraryGrid` stays — both
+controls drive the same store, so they stay in sync for free.
+
+## Out of scope
+
+- Redesigning the Settings page or reorganising its existing sections.
+- Multi-server / account switching (UR-047) — the identity block displays the
+  active server but offers no switcher.
+- Changing the bottom nav's three destinations.
+
+## Acceptance criteria
+
+- [ ] Settings and Sign out are reachable from `/`, `/search`, and `/downloads`
+      without first navigating into Library.
+- [ ] Desktop and mobile show the same account menu items in the same order.
+- [ ] The username/avatar opens the menu; it is a real button with
+      `aria-expanded`.
+- [ ] Sign out is last, after a divider, and still logs out + resets library
+      state + redirects as it does today.
+- [ ] `/player/*` and `/login` remain chrome-free.
+- [ ] Settings has a Display section that changes grid/list, and the change is
+      immediately reflected by the library page-header toggle (same store).
+- [ ] No regression in scroll containment, mini-player visibility, or bottom-nav
+      visibility on any route.
+- [ ] `bun run check` and `bun run test` pass.
+
+## Testing
+
+- Extend the existing `layoutShell` tests: chrome-visibility for `/`, `/search`,
+  `/downloads` (now true) and `/player/*`, `/login` (still false).
+- `AccountMenu`: renders the documented items in order; trigger toggles
+  `aria-expanded`; `Escape` and backdrop click close it; Sign out invokes the
+  logout handler.
+- Display setting: writes through to the `viewMode` store and persists.
+
+New requirement-implementing code needs `TRACES:` comments — see
+[CLAUDE.md](../../CLAUDE.md). Suggested: `AccountMenu` → `UR-054 | DR-075`,
+shell/header changes → `UR-054 | DR-076`, Settings Display section →
+`UR-054, UR-029 | DR-077`.
+
+## Notes for the implementer
+
+- Read [ux-flows.md §1.2–1.4](../ux-flows.md) first — behavioural spec; this is
+  the implementation plan.
+- The layout shell is subtle and the existing comments record real bugs that
+  were fixed there. Read them before restructuring.
+- Another session may be active in this repo, including in
+  `src/routes/settings/+page.svelte`. Check `git diff` before "repairing"
+  unexpected changes, and expect to coordinate on that file.

docs/specs/audio-equalizer.md

@@ -0,0 +1,171 @@
+# Spec: Audio equalizer
+
+**Status:** Accepted
+**Requirements:** UR-027 → DR-030 (EQ UI), IR-020 (MPV EQ integration).
+**UX spec:** n/a (extends the Settings › Audio section, ux-flows §8.1 instant-apply).
+**Supersedes / revises:** —
+
+## Summary
+
+Add a graphic audio equalizer to playback. Users pick a preset (Flat, Rock,
+Pop, Jazz, Classical, Bass Boost, Treble Boost, Vocal) or set custom per-band
+gains, from a new block in Settings › Audio. On Linux the gains apply live via
+MPV's audio-filter chain; the settings persist and re-apply on the next track
+and at startup, exactly like crossfade/gapless/normalize do today. Android is a
+no-op for now (documented parity gap, same as those three features).
+
+## Motivation
+
+UR-027 is one of the few still-unbuilt audio features. The audio-settings
+pipeline it needs already exists — `AudioSettings` + `set_audio_settings` on the
+`PlayerBackend` trait, the `player_set_audio_settings` command, and the Settings
+› Audio UI with instant-apply. Crossfade, gapless, and volume normalization all
+ride that pipeline. The equalizer is the same shape: N more fields on
+`AudioSettings`, an `af` filter on the MPV backend, one more block in the
+settings panel. No new command, no new state machine.
+
+## Layer assignment
+
+| Logic / responsibility | Layer | Why it belongs there |
+|------------------------|-------|----------------------|
+| EQ band count, centre frequencies, gain range/clamping | Rust | Domain of the audio engine; the bands must match what the MPV filter expects. Changing the DSP must not require a frontend change. |
+| Preset name → per-band gain curve | Rust | A preset *is* a domain gain curve, not a label. It changes with the audio engine's band layout, never with the UI. Placing it in the frontend would be the scoped-search taxonomy mistake again (values that look like config but are domain data). |
+| Translating gains → MPV `af` filter string | Rust | Platform playback detail; lives with the other `set_audio_settings` filter code in `mpv_backend.rs`. |
+| Persisting the chosen settings, re-pushing on load | Rust/existing | Same path crossfade/etc. already use; the controller re-applies `AudioSettings` per track. |
+| Rendering band sliders, the preset chips, live readouts | Frontend | Pure presentation; changes only if the settings UI is redesigned. |
+| Which preset chip is highlighted; instant-apply on change | Frontend | Presentation/input handling (UR-057), the same as the normalize preset picker. |
+
+Tie-breaker note: the preset→curve map is the one tempting boundary leak. It goes
+in Rust because a preset is a set of band gains defined *by the band layout*,
+which is an engine property. The frontend only ever names a preset and renders
+the resulting gains; it never defines them.
+
+## Design
+
+### `AudioSettings` (Rust, `settings.rs`)
+
+Add two fields (both `#[serde(rename_all = "camelCase")]` via the existing
+struct attribute):
+
+```rust
+/// Equalizer enabled. When false, no `af` EQ filter is applied.
+pub equalizer_enabled: bool,
+/// Per-band gains in dB, one per FIXED band (see EQ_BANDS). Length is
+/// validated/normalised to EQ_BANDS.len(); clamped to [-12, +12] dB.
+pub equalizer_bands: Vec<f32>,
+```
+
+Fixed 10-band ISO layout (domain constant in `settings.rs`):
+
+```rust
+pub const EQ_BANDS: [f32; 10] =
+    [31.0, 62.0, 125.0, 250.0, 500.0, 1000.0, 2000.0, 4000.0, 8000.0, 16000.0];
+pub const EQ_GAIN_MIN: f32 = -12.0;
+pub const EQ_GAIN_MAX: f32 = 12.0;
+```
+
+- `Default`: `equalizer_enabled: false`, `equalizer_bands: vec![0.0; 10]` (flat).
+- New `with_equalizer_normalised(self)` clamps each gain to `[EQ_GAIN_MIN,
+  EQ_GAIN_MAX]` and pads/truncates the vec to 10 bands. Applied in the command
+  alongside `with_crossfade_clamped` (add that call too — it's currently missing).
+- Backward compat: both fields `#[serde(default)]` so old persisted JSON loads.
+
+### Presets (Rust, `settings.rs`)
+
+```rust
+#[derive(specta::Type, Serialize, Deserialize, Clone, Copy, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub enum EqPreset { Flat, Rock, Pop, Jazz, Classical, BassBoost, TrebleBoost, Vocal }
+
+impl EqPreset {
+    /// The 10-band gain curve (dB) for this preset.
+    pub fn gains(&self) -> [f32; 10] { /* table */ }
+}
+```
+
+Preset selection is a *frontend* convenience: tapping a chip sets
+`equalizer_bands = preset.gains()` and pushes settings. The curve tables live in
+Rust; the frontend reads them via a tiny `player_get_eq_presets` command
+returning `Vec<(EqPreset, Vec<f32>)>` (or a map), so the frontend never encodes
+the numbers. (If exposing the whole table is awkward through specta, expose
+`player_eq_preset_gains(preset) -> Vec<f32>` instead — pick at implement time.)
+
+### MPV application (Rust, `mpv_backend.rs::set_audio_settings`)
+
+Build an `equalizer` / `anequalizer` filter from the bands and set the `af`
+property. When `equalizer_enabled` is false or all gains are 0, clear the EQ
+filter (leave any other `af` entries intact). Use `af add`/`af remove` or a
+rebuilt `af` string; keep it isolated so it doesn't stomp a future crossfade
+filter. Errors map to `PlayerError` like the gapless code.
+
+### No new persistence table
+
+`AudioSettings` is already round-tripped by the frontend settings store and
+re-pushed via `player_set_audio_settings` on change and on load. The two new
+fields ride along. `NullBackend`/Android inherit the trait default (no-op).
+
+### Wire summary
+
+- Command names unchanged: `player_set_audio_settings`,
+  `player_get_audio_settings` (now carry the EQ fields).
+- New (optional) read-only command for preset curves — kebab n/a (it's a
+  command): `player_get_eq_presets` (or `player_eq_preset_gains`).
+- Regenerate `bindings.ts` from the Rust types; never hand-edit.
+
+## Out of scope
+
+- Android/ExoPlayer EQ (parity gap tracked with crossfade/gapless/normalize).
+- Per-track or per-library EQ profiles — one global profile only.
+- Automatic loudness/room correction; only manual bands + presets.
+- Changing the crossfade/normalize TODOs in `set_audio_settings` beyond wiring
+  the missing `with_crossfade_clamped` call.
+
+## Acceptance criteria
+
+- [ ] Settings › Audio has an Equalizer block: enable toggle, preset chips, 10
+      band sliders with live dB readouts, instant-apply (no Save button).
+- [ ] Choosing a preset sets the bands from the Rust-defined curve; editing a
+      band switches the highlighted preset to "Custom" (frontend-only label).
+- [ ] Gains clamp to [-12, +12] dB; the band vector always normalises to 10.
+- [ ] On Linux, enabling EQ audibly changes output and persists across tracks
+      and app restart; disabling clears the filter without affecting other audio.
+- [ ] Old persisted settings (no EQ fields) load without error, defaulting flat.
+- [ ] `bun run check` and `bun run test` pass.
+- [ ] `cargo fmt` clean, `cargo clippy` clean, `bun run test:rust` passes.
+- [ ] `bun run check:boundary` passes (no preset curve numbers in the frontend).
+- [ ] New requirement-implementing code carries `// TRACES:` comments.
+- [ ] `bindings.ts` regenerated.
+
+## Testing
+
+- Rust (`settings.rs`): default is flat + disabled; `with_equalizer_normalised`
+  clamps out-of-range gains and pads/truncates band length; serialization
+  round-trips the camelCase fields; backward-compat load of pre-EQ JSON; each
+  preset returns a 10-length curve; Flat is all zeros.
+- Rust IPC param naming for any new command (camelCase rule per CLAUDE.md).
+- Frontend (`settings` page or an extracted helper): selecting a preset sets the
+  expected band array; editing a band flips the label to Custom; enable toggle
+  gates the sliders. Keep DSP untested on the frontend (it's Rust's).
+
+## TRACES
+
+- `AudioSettings` EQ fields + normalise + presets: `UR-027 | DR-030` (+ unit tests)
+- MPV EQ filter application: `UR-027 | IR-020`
+- Settings EQ UI block: `UR-027 | DR-030`
+- Preset-curve command: `UR-027 | DR-030`
+
+## Notes for the implementer
+
+- A parallel Claude session is active in this repo (it has touched
+  `tauri.conf.json`, `Dockerfile`, `package.json`, home components, and added
+  build scripts, and the Rust build is currently broken by its
+  `tauri.conf.json` bundle-target change). `git diff` before "repairing"
+  anything you didn't write; keep EQ changes isolated to `settings.rs`,
+  `mpv_backend.rs`, `backend.rs` (trait default already covers it),
+  `commands/player/settings.rs`, and the settings page.
+- Mirror the volume-normalization block in the settings page for the toggle +
+  preset-picker pattern; mirror the gapless code in `set_audio_settings` for the
+  MPV property handling.
+- Confirm the exact MPV filter name available in the linked libmpv
+  (`equalizer` vs `anequalizer`/`superequalizer`) before committing the filter
+  string; gate cleanly if unavailable.

docs/specs/downloads-as-offline-library.md

@@ -0,0 +1,166 @@
+# Spec: Downloads as a browsable offline library
+
+**Status:** Draft — ready to implement
+**Scope:** Frontend-heavy; one new repository-client browse path. Minimal Rust.
+**Requirements:** UR-055 → DR-081, DR-082, DR-083, DR-084; UR-056 → DR-085
+(see [requirements.md](../requirements.md)).
+**UX spec:** [ux-flows.md §7.2–7.7](../ux-flows.md).
+
+## Summary
+
+Replace the flat Active/Completed download list with two views under
+`/downloads`:
+
+1. **Downloaded** (default) — the library, filtered to what's on the device,
+   using the *same* browse screens as online (grids, cards, detail pages).
+2. **Transfers** — the existing progress-row list, demoted to a secondary tab,
+   showing only in-flight transfers.
+
+Plus per-item disk usage (UR-056) shown in familiar units on cards, detail
+pages, a device total, and the remove confirmation.
+
+## Motivation
+
+A user who downloaded three seasons and two albums sees ~70 individual transfer
+rows today, with no grouping and no reuse of the library UI. "What do I have
+offline" and "what is downloading" are different questions crammed into one flat
+list. Browsing offline should feel exactly like browsing online.
+
+## Background: verified current state
+
+1. **The offline repository is already a browsable tree.**
+   [offline.rs](../../src-tauri/src/repository/offline.rs) — `get_items` returns
+   downloaded items **plus** containers (MusicAlbum, Series, Season) that have at
+   least one downloaded child. `get_libraries`, `get_item`, and `search` all
+   filter to downloaded content via CTEs. This is the data source for
+   Downloaded; **do not build a new query layer.**
+
+2. **The client cannot reach it independently.**
+   [repository-client.ts](../../src/lib/api/repository-client.ts) `getItems` →
+   `repositoryGetItems` always goes through the **hybrid** repository
+   ([hybrid.rs](../../src-tauri/src/repository/hybrid.rs)), which merges cache and
+   server. There is no "offline only" browse path exposed. This is the one real
+   backend gap (DR-082).
+
+3. **Downloads page is a flat two-tab list.**
+   [downloads/+page.svelte](../../src/routes/downloads/+page.svelte) — Active /
+   Completed tabs, one `DownloadItem` row per transfer, no browsing.
+
+4. **Library browse components are reusable as-is.** `LibraryGrid`, `MediaCard`,
+   the `/library/[id]` detail page (§5A/§5B) render whatever items they are
+   given. Downloaded browse is those components with an offline-scoped source.
+
+5. **A related fallthrough bug is already tracked** (DR-080, another session):
+   `HybridRepository::get_items` treats an empty offline result as a cache miss
+   and falls through to the server. The offline-only browse path (DR-082) must
+   **not** share that behaviour — an empty result there is authoritative "nothing
+   downloaded here."
+
+6. **Concurrency, the 3-download cap, and the auto-pump are backend concerns.**
+   Do not surface them as manual controls; do not loop `startDownload` from the
+   frontend (see [CLAUDE.md](../../CLAUDE.md) gotchas).
+
+## Design
+
+### View split (DR-081)
+
+`/downloads` renders a **Downloaded** / **Transfers** switch. Downloaded is the
+default. Transfers shows a count/badge only while transfers are active.
+Initiating downloads stays on item/album/series detail pages (§7.1) — this page
+does not start downloads.
+
+### Offline-scoped browse source (DR-082, DR-083)
+
+Add an explicit offline-only browse path so Downloaded never merges server
+results and never depends on reachability. Two viable shapes — pick per the
+codebase, do not do both:
+
+- **(a)** A dedicated command (e.g. `repository_get_downloaded_items` /
+  `_libraries`) that calls the offline repository directly, with a matching
+  client method; or
+- **(b)** An explicit `offlineOnly`/scope flag on the existing get-items path
+  that bypasses the hybrid merge and the empty→fallthrough behaviour.
+
+Either way: an empty result is authoritative (do **not** reuse the DR-080
+fallthrough), and the path is available while the server is reachable (a user
+online still wants to browse their downloads).
+
+Downloaded then reuses `LibraryGrid` / `MediaCard` / the detail page against this
+source. Omit libraries and containers with no downloaded content. Badge
+partially- vs fully-downloaded containers. Play uses the local file; remove is
+available at item / album / season / series level and removes a container from
+the browse when its last downloaded child goes.
+
+### Transfers view (DR-084)
+
+The existing list, filtered to in-flight rows only: downloading (with progress),
+queued, paused, failed, waiting-for-WiFi (the DR-074 state from the other
+session). Controls: Pause / Resume / Cancel / Retry. Completed transfers leave
+this view — they appear in Downloaded. Empty state points at the library.
+
+### Disk usage (DR-085, UR-056)
+
+- **Source the bytes from the download manager** — it writes the files and can
+  stat them. Aggregate to album/season/series subtotals and a device total.
+  This is display + aggregation, **not** new tracking.
+- **Format once, consistently.** One shared formatter, human units, 2–3
+  significant figures (`1.2 GB`, `340 MB`). Binary vs decimal — pick one and use
+  it everywhere.
+- **Surface it in familiar places:** a secondary size label on the card and
+  detail page; a device total at the top of Downloaded (`3.4 GB · 12 items`)
+  that reconciles with the listed sum; a reclaim figure in the remove
+  confirmation ("frees 1.2 GB"). No separate "storage report" screen.
+- Sort/filter by size is a nice-to-have, not required for v1.
+
+## Out of scope
+
+- Changing download initiation, the 3-concurrent cap, or the auto-pump.
+- The catalog-browse / show-server-catalog toggle (UR-052, another session) —
+  that governs the *online offline-fallback* library; this is the dedicated
+  Downloads surface. They should be consistent but are separate work.
+- Fixing the DR-080 hybrid fallthrough bug (owned elsewhere) — just don't depend
+  on that behaviour here.
+
+## Acceptance criteria
+
+- [ ] `/downloads` opens on Downloaded and can switch to Transfers.
+- [ ] Downloaded lists only libraries/containers with downloaded content, using
+      the same grids/cards/detail pages as online browsing.
+- [ ] Browsing Downloaded never shows non-downloaded server items, online or off.
+- [ ] An empty Downloaded result reads as "nothing downloaded," never falls
+      through to the server.
+- [ ] Play from Downloaded plays the local file.
+- [ ] Remove works at item/album/season/series level and updates the browse.
+- [ ] Transfers shows only in-flight rows with working controls; finished
+      transfers move to Downloaded.
+- [ ] Each downloaded item/container shows its on-disk size; a device total is
+      shown and reconciles with the sum; remove states the reclaim amount.
+- [ ] `bun run check`, `bun run test`, and (if Rust touched) `cargo test` +
+      `cargo clippy` pass.
+
+## Testing
+
+- Repository client: the offline-only browse path returns downloaded content and
+  its containers, and an empty result does **not** trigger server fallthrough.
+- Downloaded view: libraries/containers with no downloads are omitted;
+  partial/full container badging.
+- Transfers: only in-flight statuses render; a completed transfer disappears.
+- Size formatter: rounding and unit thresholds; subtotal aggregation; device
+  total reconciles with listed items.
+- If a Rust command is added, add the tauri IPC param-naming coverage per
+  [CLAUDE.md](../../CLAUDE.md) (camelCase rule).
+
+New requirement-implementing code needs `TRACES:` comments. Suggested tags:
+view split `UR-055 | DR-081`; offline browse path `UR-055 | DR-082, DR-083`;
+Transfers `UR-055 | DR-084`; size display `UR-056 | DR-085`.
+
+## Notes for the implementer
+
+- Read [ux-flows.md §7.2–7.7](../ux-flows.md) first — behavioural spec; this is
+  the implementation plan.
+- The offline repository already does the hard part. The main work is a clean
+  offline-only client path and reusing the library components — resist
+  rebuilding browse UI.
+- Another session is active in downloads/offline/connectivity code (DR-074,
+  DR-078–080). Coordinate on [downloads/+page.svelte](../../src/routes/downloads/+page.svelte)
+  and the repository layer; check `git diff` before repairing unexpected changes.

docs/specs/frontend-domain-model.md

@@ -0,0 +1,309 @@
+# Spec: Remove Jellyfin-specific models from the frontend
+
+> **Implementation status (branch `frontend-domain-model`, worktree
+> `../JellyTau-domain-model`):** Catalog surface **done**. The frontend's *item
+> classification* and *time units* no longer speak Jellyfin:
+> - `domain/` module is the single source of truth; `MediaKind` enum + isolated
+>   `from_jellyfin` mapping. The model gained real distinctions the flat
+>   `item_type` had hidden: `LiveChannel` / `ChannelItem` / `Channel`.
+> - Every catalog `item.type === "..."` → `item.kind` (0 remaining in `src/`).
+> - Catalog ticks → milliseconds (`durationMs`, `playbackPositionMs`);
+>   `formatDuration` takes ms; progress bars are unit-consistent.
+> - User-facing type badge → `kindLabel()`.
+> - Old Jellyfin-named fields remain **dual-carried** on the wire so nothing broke.
+>
+> **Deferred (tracked, not done):**
+> - `primaryImageTag` → `imageId` rename (naming-only; ~40 sites across catalog +
+>   `PlayerMediaItem`/`MergedMediaItem`, the latter needing a Rust `image_id`
+>   round-trip). Catalog `MediaItem` already has `imageId`.
+> - Player/session/reporting tick math (`Queue`, `SessionCard`, `RemoteControls`,
+>   `playbackReporting`, `playerEvents`) — crosses storage/Jellyfin *command
+>   signatures* in ticks; needs those commands to accept ms (phase 4).
+> - `stream.type` (`mediaStreams[].type`) — Jellyfin stream vocabulary (phase 4).
+> - Delete `playbackUnits.ts` / `jellyfinFieldMapping.ts` once their last
+>   consumers migrate; drop the dual-carried fields once nothing reads them.
+
+**Status:** Partially implemented (catalog surface); see banner.
+**Requirements:** Architectural (boundary integrity — CLAUDE.md core principles).
+Allocate new DRs on acceptance; suggested: DR for the domain `MediaItem`/`MediaKind`
+type, DR for tick/image-tag hoisting, DR for the phased frontend migration
+(see [requirements.md](../requirements.md)). Relates to UR-007, UR-008, UR-034.
+**UX spec:** n/a — zero user-visible behaviour change. This is a pure
+architecture/boundary migration.
+**Supersedes / revises:** none. Extends the boundary work started in
+[scoped-search-boundary.md](scoped-search-boundary.md) from *taxonomy* to the
+*whole media model*.
+
+## Summary
+
+The frontend currently consumes Jellyfin's data model directly: `MediaItem` is a
+Jellyfin DTO (`runTimeTicks`, `primaryImageTag`, `parentIndexNumber`, a
+stringly-typed `type: string` carrying Jellyfin's item vocabulary), mirrored via
+specta into **36+ frontend files**, with **127 `item.type === "…"` string
+comparisons across 23 files** and two frontend utility modules
+(`playbackUnits.ts`, `jellyfinFieldMapping.ts`) doing Jellyfin-specific unit and
+field conversion in the presentation layer.
+
+This spec defines a **provider-neutral domain model**, owned by Rust, that the
+Jellyfin repository maps *into*. The frontend consumes only that model. When done,
+no Jellyfin vocabulary — item-type strings, ticks, image tags, Jellyfin field
+names — remains in `src/`.
+
+## Motivation
+
+Two concrete problems, one strategic:
+
+1. **Boundary violation at scale.** Per CLAUDE.md, the frontend is
+   presentation-only and Rust owns the domain. Today the *domain model itself* is
+   Jellyfin's wire shape, propagated unchanged across IPC. The frontend knows what
+   a "tick" is, what `primaryImageTag` means, and that `"Audio"` is a track. That
+   is domain knowledge in the wrong layer, 36 files deep.
+2. **Fragility.** `type: string` is unchecked: a typo (`"Epis0de"`) or a Jellyfin
+   rename fails silently at runtime with no compiler help, across 127 sites. Tick
+   math (`* 10_000_000`) duplicated frontend-side is a class of bug the backend
+   should have already resolved.
+3. **Strategic (the reason we chose the ambitious target):** a neutral domain
+   model is the precondition for **ever supporting a non-Jellyfin backend** (Plex,
+   local files, Subsonic). As long as the UI speaks Jellyfin, that door is welded
+   shut.
+
+## Layer assignment
+
+| Logic / responsibility | Layer | Why it belongs there |
+|------------------------|-------|----------------------|
+| Definition of the media domain model (`MediaItem`, `MediaKind`) | **Rust** | The canonical shape the whole app reasons about; must not be a provider's wire format. |
+| Jellyfin DTO → domain mapping (ticks→ms, image tag→url/id, `"Audio"`→`Track`, `PremiereDate`→`releaseDate`) | **Rust**, in the Jellyfin repository | Provider-specific translation; changes if Jellyfin changes; is the definition of "how Jellyfin maps to our domain." |
+| Tick arithmetic (`playbackUnits.ts`) | **Rust** | A Jellyfin unit. The frontend should never see ticks; it receives `durationMs`/`positionMs`. |
+| Sort-field mapping (`jellyfinFieldMapping.ts`, `title→SortName`) | **Rust** | Maps neutral sort keys to Jellyfin query fields — provider vocabulary. Frontend sends a neutral `SortKey`. |
+| `MediaKind` classification (is this a track / album / episode?) | **Rust** | Derived from Jellyfin's `item_type`; the frontend receives the already-classified kind. |
+| Choosing which kind renders as a card vs a list row; grid/list toggle; group order | **Frontend** | Pure presentation over the neutral `kind`. Changes only if the UI is redesigned. |
+| Navigation decisions (`kind === Track && albumId` → go to album) | **Frontend** | Presentation/routing over neutral fields. |
+
+**Borderline calls, resolved:**
+
+- *`MergedMediaItem`* (the lightweight now-playing projection) is already
+  half-neutral (`title`, `artist`, `duration`) — it becomes a straightforward
+  subset of the new domain model, not a special case.
+- *Context discriminators* `"album"`, `"playlist"`, `"remote"` (in `TrackList`,
+  playback context, sessions) are **already domain-neutral** — they are *our*
+  vocabulary, not Jellyfin's. They stay as-is; do not confuse them with
+  `item_type`. Only the Jellyfin item-type strings move.
+- *`mediaStreams[].type === "Audio"/"Subtitle"/"Video"`* (track selection in
+  VideoPlayer) is Jellyfin stream vocabulary too, but is lower-risk and
+  self-contained — deferred to a late phase, not phase 1.
+
+## Design
+
+### Single canonical model, one location, isolated mappings
+
+The domain model is defined **once**, in a dedicated top-level Rust module
+`src-tauri/src/domain/`, and is the single source of truth shared across the
+whole app:
+
+```
+src-tauri/src/domain/
+  media.rs         canonical MediaItem, MediaKind, and the other media types
+  from_jellyfin.rs Jellyfin DTO -> domain mapping, ISOLATED here
+  mod.rs           re-exports
+        |  tauri-specta (export_typescript_bindings test)
+        v
+  src/lib/api/bindings.ts   generated MediaItem/MediaKind — the frontend copy
+```
+
+- **One definition.** `domain::MediaItem` is *the* model. Rust (repositories,
+  player, downloads) uses it directly. The frontend uses the generated `bindings.ts`
+  projection of it. There is no second hand-written copy in either language, so it
+  cannot drift — "shared between frontend and backend" is realized by generation,
+  not duplication.
+- **Mappings live beside the model, never in consumers.** All provider translation
+  (`JellyfinItem` → `domain::MediaItem`, ticks→ms, image-tag→id, item-type→`MediaKind`)
+  lives in `domain/from_jellyfin.rs`. It is the *only* place Jellyfin vocabulary
+  touches the domain type. Adding a second provider later means a new
+  `from_<provider>.rs` beside it — the model and every consumer stay untouched.
+- **`domain` is a top-level module** (not under `repository/`) because `MediaItem`
+  is used by `player/`, `download/`, and `playback_mode/` too — it is not
+  repository-specific.
+- The existing `JellyfinItem` DTO + `to_media_item()` in
+  [online.rs](../../src-tauri/src/repository/online.rs) is the seam that already
+  exists; it **moves** into `domain/from_jellyfin.rs` and is enriched to do real
+  translation instead of copying `item_type` through.
+
+### The domain model (Rust)
+
+```rust
+// src-tauri/src/domain/media.rs — provider-neutral. NO Jellyfin vocabulary.
+#[derive(specta::Type, Serialize, Deserialize, Clone, Copy, Debug, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub enum MediaKind {
+    Track, Album, Artist, Playlist,          // music
+    Movie, Series, Season, Episode,          // video
+    Person,                                  // cast/crew
+    Channel, Folder,                         // containers/live
+}
+
+#[derive(specta::Type, Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct MediaItem {
+    pub id: String,
+    pub name: String,
+    pub kind: MediaKind,          // was: type: String
+    pub is_folder: bool,
+    pub server_id: String,
+
+    // Times in milliseconds — NEVER ticks.
+    pub duration_ms: Option<i64>,        // was: run_time_ticks
+
+    // Image as a resolved identifier the frontend turns into a URL via the
+    // existing image command — no raw Jellyfin tag semantics leak.
+    pub image_id: Option<String>,        // was: primary_image_tag
+    pub backdrop_image_ids: Option<Vec<String>>,
+
+    pub overview: Option<String>,
+    pub genres: Option<Vec<String>>,
+    pub production_year: Option<i32>,
+    pub release_date: Option<String>,    // was: premiere_date (ISO-8601)
+    pub community_rating: Option<f64>,
+    pub official_rating: Option<String>,
+
+    // Relationships — already neutral, kept.
+    pub album_id: Option<String>, pub album_name: Option<String>,
+    pub album_artist: Option<String>, pub artists: Option<Vec<String>>,
+    pub artist_items: Option<Vec<ArtistItem>>,
+    pub series_id: Option<String>, pub series_name: Option<String>,
+    pub season_id: Option<String>, pub season_name: Option<String>,
+
+    // Ordinal position — rename off Jellyfin's index vocabulary.
+    pub track_number: Option<i32>,       // was: index_number
+    pub disc_number: Option<i32>,        // was: parent_index_number
+
+    pub user_data: Option<UserData>,
+    pub media_streams: Option<Vec<MediaStream>>,
+    pub media_sources: Option<Vec<MediaSource>>,
+    pub people: Option<Vec<Person>>,
+}
+```
+
+The existing `JellyfinItem` DTO (already defined in `online.rs`, deserialized
+from the Jellyfin JSON) **moves into `domain/from_jellyfin.rs`** and stays
+private to that module. Its `to_media_item()` — today a near-passthrough that
+copies `item_type` straight across — is enriched into the single, tested place
+that:
+
+- classifies `item_type: String` → `MediaKind` (including the edge cases found in
+  the audit: `"ChannelFolderItem"` → `Channel`/`Folder` by `is_folder`,
+  `"TvChannel"` → `Channel`, `"Composer"/"Director"/"Writer"` → `Person`,
+  `"Video"` → `Movie` or a video leaf). Unknown strings map to `Folder` or a new
+  `Other` variant — **decide at implementation; must not panic.**
+- converts `run_time_ticks` → `duration_ms` (`ticks / 10_000`).
+- maps `PremiereDate` → `release_date`, image tags → image ids.
+
+`SortKey` enum + its Jellyfin field mapping (`jellyfinFieldMapping.ts` contents)
+moves into the Jellyfin repository; the command takes a neutral `SortKey`.
+
+### 🔴 The `search-event` / dual-payload rule applies again
+
+Every path that returns `MediaItem` — command returns **and** the `search-event`
+and any other event payloads — emits the new domain shape. Both sides of a
+twice-delivered result must match (same rule as
+[scoped-search-boundary.md](scoped-search-boundary.md)). Grep for `MediaItem` in
+event definitions before declaring a phase done.
+
+### Frontend after
+
+- `MediaItem`/`MediaKind` come from generated `bindings.ts`.
+- `item.type === "Audio"` → `item.kind === "track"` (127 sites, mechanical).
+- `runTimeTicks` usages → `durationMs`; **delete `playbackUnits.ts`** (ticks no
+  longer cross the boundary; keep only any purely-display seconds↔clock helpers if
+  they exist, which are not Jellyfin-specific).
+- `primaryImageTag` → `imageId` through the existing image-URL command.
+- **Delete `jellyfinFieldMapping.ts`**; sort options send a neutral `SortKey`.
+- Assert with the boundary tripwire + a new grep (see acceptance).
+
+## Phased migration
+
+This is too large and too collision-prone for one change. Phases are independently
+shippable, each keeps all tests green, and each is a reviewable PR:
+
+1. **Establish the `domain/` module + enriched mapping, tests — no frontend
+   change yet.** Create `src-tauri/src/domain/{media,from_jellyfin,mod}.rs`. Move
+   `JellyfinItem`/`to_media_item` in. Add `MediaKind` and the neutral fields to
+   `domain::MediaItem` as *additive, defaulted* fields, and populate them in the
+   mapping, while **keeping the old Jellyfin-named fields too** (dual-carry). The
+   wire shape is a superset of today's, so the frontend still compiles and
+   behaves identically. Lands the authority + full mapping unit coverage first,
+   with zero blast radius on the 52 construction sites (they set the old fields;
+   new ones default).
+2. **Flip the wire shape.** Commands + events emit the new `MediaItem`.
+   Regenerate `bindings.ts`. Frontend breaks to compile errors — fix them
+   mechanically (`type`→`kind`, values `"Audio"`→`"track"`, `runTimeTicks`→
+   `durationMs`, `primaryImageTag`→`imageId`). This is the big mechanical PR;
+   `bun run check` is the driver.
+3. **Delete the frontend conversion helpers** (`playbackUnits.ts` ticks,
+   `jellyfinFieldMapping.ts`) and route sorting through the neutral `SortKey`.
+4. **Stream vocabulary** (`mediaStreams[].type`) and any remaining stragglers;
+   tighten the boundary check to forbid Jellyfin item-type strings in `src/`
+   outside tests.
+
+Ship 1 → 2 → 3 → 4 as separate PRs. Do **not** attempt all four at once.
+
+## Out of scope
+
+- Actually adding a second backend (Plex/Subsonic). This spec only *unblocks* it.
+- Changing any user-visible behaviour, layout, or copy.
+- The player-internal `PlayerMediaItem` / `MediaSessionType` shapes, except where
+  they carry the fields being renamed — align them in phase 2 only if the compiler
+  demands it.
+- Context discriminators (`"album"`, `"playlist"`, `"remote"`) — already neutral.
+
+## Acceptance criteria
+
+- [ ] No Jellyfin item-type string (`"Audio"`, `"MusicAlbum"`, `"Series"`, …) is
+      compared against `.type`/`.kind` anywhere in `src/` (outside tests). Verify:
+      `grep -rIn '\.kind === "\(Audio\|MusicAlbum\|MusicArtist\|Series\|Episode\|Movie\|Playlist\)"' src/` returns nothing.
+- [ ] No `Ticks`, `runTimeTicks`, `primaryImageTag`, `PremiereDate`, or Jellyfin
+      sort-field name (`SortName`, `RunTimeTicks`, …) appears in `src/` outside
+      tests. `playbackUnits.ts` (ticks) and `jellyfinFieldMapping.ts` are deleted.
+- [ ] `MediaItem`/`MediaKind`/`SortKey` in the frontend come from `bindings.ts`.
+- [ ] The `From<JellyfinMediaDto>` mapping is total and never panics on an unknown
+      item type (Rust test with a garbage type string).
+- [ ] Behaviour is identical: same library/search/home rendering, same sorting,
+      same navigation, offline included.
+- [ ] Both command returns and event payloads carry the new shape (no flicker).
+- [ ] `bun run check`, `bun run test`, `bun run check:boundary` pass;
+      `cargo fmt`/`cargo clippy`/`bun run test:rust` pass; `bindings.ts` regenerated.
+
+## Testing
+
+**Rust** (`cargo test`): the `From<JellyfinMediaDto> for MediaItem` mapping is the
+critical surface —
+- every known `item_type` → correct `MediaKind` (table test over all 20 values
+  found in the audit, incl. `ChannelFolderItem`, `TvChannel`, `Composer`);
+- unknown type string → safe fallback, no panic;
+- `run_time_ticks` → `duration_ms` (10_000 divisor), boundary/None cases;
+- `SortKey` → Jellyfin field mapping (port `jellyfinFieldMapping.ts`'s cases).
+
+**Frontend** (vitest): update the many tests asserting `.type`/`runTimeTicks`;
+they become `.kind`/`durationMs`. `jellyfinFieldMapping`/`playbackUnits` tests are
+deleted with their modules. Add a compose/render test proving `kind`-based
+branching matches the old `type`-based branching for a representative mix.
+
+## TRACES
+
+Per [CLAUDE.md](../../CLAUDE.md): the domain type + mapping
+`UR-007, UR-008 | <new DR>`; the tick/field hoist `<new DR>`; frontend migration
+phases share the DRs of the capability each touches (don't invent per-file DRs).
+
+## Notes for the implementer
+
+- **This is the highest-collision change in the repo's history** — it touches 36+
+  frontend files and the core Rust types. A parallel Claude session in any media
+  file will conflict. Strongly prefer a dedicated worktree per phase, and
+  `git diff` before repairing anything (CLAUDE.md gotchas / project memory).
+- Phase 1 deliberately maps *back* to the old shape so it can land safely ahead of
+  the disruptive flip. Resist the urge to skip it.
+- IPC camelCase rules apply to the new enums/structs
+  ([04-type-sync-and-threading.md](../architecture/04-type-sync-and-threading.md)):
+  `#[serde(rename_all = "camelCase")]`; tagged-enum tag convention; regenerate
+  `bindings.ts`, never hand-edit.
+- Reviewed against [SPEC-REVIEW-CHECKLIST.md](SPEC-REVIEW-CHECKLIST.md) — the
+  Layer assignment table above is the load-bearing section.

docs/specs/offline-downloaded-only-filter.md

@@ -0,0 +1,235 @@
+# Spec: Offline "downloaded only" filtering (issue #10)
+
+**Status:** Implemented
+**Scope:** Frontend (connectivity store) + Rust (hybrid repository). No new
+commands, no schema changes, no UI additions.
+**Requirements:** UR-052 → DR-078, DR-079, DR-080
+(see [requirements.md](../requirements.md)).
+**Tracking:** issue #10 — *"when offline the filter to show only downloaded
+media does not work."*
+
+## Summary
+
+Offline, a library page is supposed to show **only media on the device**, with a
+"Show all server media" toggle that additionally reveals the cached server
+catalog greyed out (queueable for download on reconnect). In practice the toggle
+does not gate the listing — every server item still appears. This spec fixes
+that with two independent changes; either one alone leaves the bug visible.
+
+## Background: what already exists
+
+Verified in code. **The feature is built and mostly correct — this is a
+two-point repair, not new infrastructure.** Do not rebuild the toggle, the
+command, or the SQL gate.
+
+1. **The SQL gate works and is unit-tested.**
+   [offline.rs](../../src-tauri/src/repository/offline.rs) — `get_items` appends
+   the synced-catalog `UNION` branch only when `include_catalog_browse()` is
+   true; with it false, only downloaded/local rows return. Guarded by
+   `test_get_items_toggle_gates_synced_catalog` (UT-067). **Do not touch the
+   query.**
+
+2. **The toggle → backend path is wired.** The `showServerCatalog` store and the
+   `set_show_server_catalog` command
+   ([catalog.rs](../../src-tauri/src/commands/catalog.rs)) drive the process-wide
+   `INCLUDE_CATALOG_BROWSE` flag. `pushCatalogVisibility` in
+   [offlineCatalog.ts](../../src/lib/services/offlineCatalog.ts) computes
+   `include = connected || showCatalog` and pushes it on every change.
+
+3. **Home-screen queries are already downloads-only.** `get_latest_items`,
+   `get_resume_items`, `get_recently_played_audio`, `get_resume_movies` all
+   `INNER JOIN downloads ... status = 'completed'`. They are unaffected — leave
+   them.
+
+4. **`MediaCard` already greys and queues.**
+   [MediaCard.svelte](../../src/lib/components/library/MediaCard.svelte) —
+   `isServerOnly` renders the greyed, inert card with a queue button; the queued
+   row heals its `stream_url` on reconnect via the offlineCatalog service. Leave
+   it.
+
+## The two defects
+
+### Defect A — offline is never actually entered (DR-079)
+
+`pushCatalogVisibility` keys off `isConnected`, but
+[connectivity.ts](../../src/lib/stores/connectivity.ts) derives:
+
+```ts
+isConnected = isOnline && isServerReachable   // isOnline = navigator.onLine
+```
+
+`navigator.onLine` is documented in that same file as **advisory only** — the
+Rust `ConnectivityMonitor` is the source of truth (principle: *reachability from
+real traffic*, DR-055). When the server is unreachable but the device link is
+up (server down, wrong LAN, VPN dropped), `isOnline` stays true, so `isConnected`
+stays true, so `include` stays true, so the backend keeps returning the full
+catalog. The user is "offline" in every meaningful sense but the toggle never
+gets a chance to gate anything.
+
+This is the primary cause: it explains why the filter looks dead rather than
+merely inverted — the gate never closes.
+
+### Defect B — an intentionally empty result falls through to the server (DR-080)
+
+With the gate off and nothing downloaded in a library, offline `get_items`
+correctly returns few or zero rows. But
+[hybrid.rs](../../src-tauri/src/repository/hybrid.rs) treats a cache result as a
+hit only `if data.has_content()`. An empty offline result is indistinguishable
+from a cache miss, so `HybridRepository::get_items` (and `parallel_race`, used by
+~10 other reads) falls through to the server and returns the full server list —
+re-defeating the filter even after Defect A is fixed.
+
+## Design
+
+### Fix A: `isConnected` follows backend reachability alone (DR-079)
+
+In [connectivity.ts](../../src/lib/stores/connectivity.ts), redefine the derived
+store:
+
+```ts
+export const isConnected = derived(
+  connectivity,
+  ($c) => $c.isServerReachable
+);
+```
+
+`navigator.onLine` stays wired to what it is good for — a *trigger* for an
+immediate recheck (`online`/`offline` listeners already call
+`checkServerReachable()`); it must no longer be a *term* in the offline decision.
+Leave `isOnline` on the state object and the listeners intact.
+
+Consider whether the optimistic `isServerReachable: true` startup default
+([connectivity.ts](../../src/lib/stores/connectivity.ts)) should hold until the
+first real check resolves. Keep it — flipping the app to "offline" on launch is a
+worse regression than a brief full-catalog flash before the first probe. Note the
+choice in a comment.
+
+**Blast radius — this is the reason this is a spec, not a patch.** `isConnected`
+is consumed beyond this feature (banners, `MediaCard`, mini-player gating,
+anything importing it). Enumerate consumers first:
+
+```
+grep -rn "isConnected" src/ | grep -v node_modules
+```
+
+For each, confirm "server unreachable" (not "device link down") is the correct
+trigger. It almost always is — that is the whole point of the reachability model
+— but verify rather than assume, and call out anything that genuinely wanted the
+device link in the PR description.
+
+### Fix B: an empty offline result is authoritative when the gate is off (DR-080)
+
+The backend must distinguish "cache is cold, go ask the server" from "user asked
+for downloads only and there are none here." The gate flag already encodes intent
+— reuse it.
+
+Add a getter beside the existing setter in
+[offline.rs](../../src-tauri/src/repository/offline.rs):
+
+```rust
+pub fn include_catalog_browse() -> bool { /* pub, already exists privately */ }
+```
+
+In [hybrid.rs](../../src-tauri/src/repository/hybrid.rs) `get_items`: when
+`!include_catalog_browse()`, treat the offline result as authoritative and return
+it **as-is even when empty** — do not spawn/await the server fallback for this
+call. When the flag is on (online fast-path, or offline with the toggle on),
+behaviour is unchanged: empty cache still falls through to the server.
+
+Keep it surgical:
+
+- Scope the change to `get_items`. The gate is a `get_items` concept; do not
+  thread it into `parallel_race` or the other readers, which have no catalog
+  gate and legitimately want the server on an empty cache.
+- Preserve the online path exactly: with the flag on (its default, and always so
+  while reachable) the method behaves as it does today, including the background
+  cache refresh on a hit.
+- The flag is process-global `Relaxed`; it is set from the frontend before the
+  query. That ordering already holds for the SQL gate — no new synchronization.
+
+### Why both
+
+Fix A closes the gate; Fix B stops the hybrid from re-opening it. A alone: with
+downloads present the list still gets padded by the server fallback whenever a
+library's cache is thin. B alone: the gate never closes because `isConnected`
+never goes false on a live link. Ship them together.
+
+## Out of scope
+
+- The SQL gate, the toggle, the command, `INCLUDE_CATALOG_BROWSE` — all correct.
+- `MediaCard` greying / queue-on-reconnect — correct.
+- Home-screen and resume queries — already downloads-only.
+- The Rust `ConnectivityMonitor` reachability logic itself — unchanged; this
+  spec only stops the *frontend* from diluting its verdict with `navigator.onLine`.
+- Any new IPC command, DB column, or settings entry.
+- Making the "Show all server media" toggle reachable from Settings (that is a
+  UX-placement question, tracked separately under UR-051's toggle note).
+
+## Acceptance criteria
+
+- [~] With the server unreachable on a live device link, a library page lists
+      only downloaded media when the toggle is off (IT-016 — pending e2e; unit
+      coverage via UT-069 + gate tests).
+- [x] Turning the toggle on reveals the greyed-out cached catalog; turning it off
+      hides it again — without leaving/re-entering the page (SQL gate + toggle
+      wiring unchanged; UT-068 confirms the flag is pushed on toggle change).
+- [x] A library with downloads and a thin cache does not get padded with
+      non-downloaded server items when offline with the toggle off (Defect B —
+      UT-070: gate off + empty offline result returned as-is, server not queried).
+- [x] `isConnected` is false whenever the server is unreachable, regardless of
+      `navigator.onLine`; true for a reachable server even if the browser reports
+      offline (UT-069).
+- [x] Every existing `isConnected` consumer still behaves correctly (banner in
+      `+layout.svelte`, `MediaCard`, `favorites.ts` server-write skip — all want
+      "server unreachable", which is the new semantics; `CastButton`'s local
+      `isConnected` is unrelated). Full frontend suite (616 tests) green.
+- [x] Online behaviour is unchanged: with the flag on (its default, always so
+      while reachable) `get_items` keeps the offline fast-path and background
+      refresh (UT-067 + gate-on fall-through test).
+- [~] A download queued from a greyed offline card resolves and starts on
+      reconnect (IT-017 — regression check, no code change; offlineCatalog
+      resume path untouched).
+- [x] `bun run check`, `bun run test`, and `bun run test:rust` pass;
+      `cd src-tauri && cargo fmt && cargo clippy` clean (no new warnings in the
+      touched files).
+
+## Testing
+
+Rust ([offline.rs](../../src-tauri/src/repository/offline.rs) /
+[hybrid.rs](../../src-tauri/src/repository/hybrid.rs) test modules):
+
+- **UT-070** — hybrid `get_items` with the gate off returns an empty offline
+  result as-is and does **not** query the server. Assert via a mock online repo
+  whose `get_items` bumps a call counter that must stay at zero.
+- Gate on + empty cache still falls through to the server (guard the online path).
+- UT-067 (`test_get_items_toggle_gates_synced_catalog`) must still pass untouched.
+
+Frontend (vitest, `src/lib/**/*.test.ts`):
+
+- **UT-069** — `isConnected` follows `isServerReachable` alone: false when
+  unreachable with `navigator.onLine === true`; true when reachable with
+  `navigator.onLine === false`.
+- **UT-068** — `pushCatalogVisibility` resolves `serverReachable || showCatalog`
+  and pushes to the backend on a change of either input (extend the existing
+  offlineCatalog tests).
+
+Integration (IT-016, IT-017) are documented as pending in
+[requirements.md](../requirements.md); wire them if the e2e harness can simulate
+an unreachable-server-on-live-link state, otherwise leave them pending with a note.
+
+New/changed requirement code keeps its `TRACES:` comments — see
+[CLAUDE.md](../../CLAUDE.md). The affected files already carry tags:
+`connectivity.ts` (`… | DR-079`), `hybrid.rs` (`… | DR-080`), `offline.rs`
+(`… | DR-078`). Update the getter's tag when you expose it.
+
+## Notes for the implementer
+
+- Read [docs/architecture/07-connectivity.md](../architecture/07-connectivity.md)
+  before Fix A — it is the canonical statement of the reachability model this fix
+  restores fidelity to.
+- Fix B relies on the frontend having pushed the flag before the query runs; that
+  ordering already holds for the SQL gate today. No new locking.
+- Another session is active in this repo (WiFi-only downloads, account menu
+  landed alongside this work). Check `git diff` before "repairing" unexpected
+  changes, and expect requirement IDs around UR-052 / DR-078 to be adjacent to
+  other new rows.

docs/specs/scoped-search-boundary.md

@@ -0,0 +1,273 @@
+# Spec: Move search scope taxonomy behind the Rust boundary
+
+**Status:** Proposed
+**Scope:** Rust + Frontend. **Revises a decision in
+[scoped-search.md](scoped-search.md).**
+**Requirements:** UR-049, UR-050 (existing) → new DRs for the boundary move
+(allocate on implementation; suggested DR-063/DR-065/DR-067 revisions plus one
+new DR for the grouped result shape — see [requirements.md](../requirements.md)).
+**UX spec:** unchanged — [ux-flows.md §6](../ux-flows.md). This is a pure
+architecture/boundary change with **no user-visible behaviour difference**.
+
+## Why this spec exists
+
+[scoped-search.md](scoped-search.md) shipped scoped search as "frontend only, no
+Rust changes." That was the smallest wiring change, and it worked — but it left
+**Jellyfin's item-type taxonomy encoded in the presentation layer**, which
+violates the project's core boundary rule ("Svelte frontend — presentation
+only"; all business logic in Rust — see [CLAUDE.md](../../CLAUDE.md) and
+[architecture/02-svelte-frontend.md](../architecture/02-svelte-frontend.md)).
+
+The offending knowledge lives in
+[searchScope.ts](../../src/lib/utils/searchScope.ts):
+
+```ts
+const SCOPE_ITEM_TYPES = {
+  music:  ["MusicAlbum", "MusicArtist", "Audio", "Playlist"],
+  movies: ["Movie"],
+  tv:     ["Series", "Episode"],
+};
+const GROUP_ITEM_TYPES = {
+  songs: ["Audio"], albums: ["MusicAlbum"], artists: ["MusicArtist"],
+  movies: ["Movie"], tvShows: ["Series", "Episode"],
+};
+```
+
+This is a **domain definition** — "what the category *Music* means in Jellyfin's
+vocabulary" — expressed twice, in the wrong layer. The concrete failure it
+creates: the day the backend starts returning a type the frontend never
+enumerated (e.g. `MusicVideo`, or Jellyfin renaming a kind), search silently
+drops it from both the query filter and the result buckets, and nothing in the
+Rust layer — the actual authority on Jellyfin's API — can correct it. Two
+sources of truth that will drift.
+
+**This must be fixed while the feature is uncommitted**, before the leak ships
+baked into a released wire contract.
+
+### What is *not* a leak (leave it alone)
+
+Single concrete-type list pages are **not** business logic and stay as-is:
+
+- `music.ts` → `["MusicAlbum"]` / `["Playlist"]`, `movies.ts` → `["Movie"]`,
+  `tv.ts` → `["Series"]`
+- `GenericMediaListPage.svelte` → `[config.itemType]`
+- `ArtistDetailView`, `RelatedItemsSection`, `AddToPlaylistModal`,
+  `PersonDetailView`
+
+"This page shows albums" is a legitimate presentation choice expressed through a
+generic `getItems(parentId, { includeItemTypes })` API. Only the **search scope
+taxonomy** (a semantic category → many types, defined once and reused) crosses
+the line. Do **not** invent a backend enum for every list page — that is
+over-abstraction, not cleaner separation.
+
+## The boundary rule after this change
+
+> The frontend never names a Jellyfin item type **in connection with search.**
+> It sends an opaque `scope`, and receives results already sorted into labelled
+> groups. The frontend owns only **group order** (presentation) and
+> **rendering**.
+
+## Design
+
+### Rust owns scope → item-types (query side)
+
+Add an opaque enum that crosses IPC, and move the expansion table into Rust:
+
+```rust
+// repository/types.rs
+#[derive(specta::Type, Serialize, Deserialize, Clone, Copy, Debug)]
+#[serde(rename_all = "camelCase")]
+pub enum SearchScope { All, Music, Movies, Tv }
+
+impl SearchScope {
+    /// The Jellyfin item types this scope requests, or None for `All`
+    /// (which must send NO includeItemTypes — see below).
+    pub fn item_types(self) -> Option<Vec<String>> {
+        match self {
+            SearchScope::All    => None,
+            SearchScope::Music  => Some(vec!["MusicAlbum", "MusicArtist", "Audio", "Playlist"]
+                                        .into_iter().map(String::from).collect()),
+            SearchScope::Movies => Some(vec!["Movie".into()]),
+            SearchScope::Tv     => Some(vec!["Series".into(), "Episode".into()]),
+        }
+    }
+}
+```
+
+`SearchOptions` gains `scope` and the search command resolves it into the
+existing `include_item_types` filter **inside Rust**, before dispatching to the
+online/offline paths (which already honour `include_item_types` — do not touch
+their filtering, per [scoped-search.md](scoped-search.md) §Background 2).
+
+```rust
+pub struct SearchOptions {
+    pub limit: Option<usize>,
+    pub search_term: Option<String>,
+    pub scope: Option<SearchScope>,        // NEW
+    // include_item_types stays for the single-type list-page callers,
+    // but the SEARCH command derives it from `scope` when scope is set.
+}
+```
+
+**Precedence:** if `scope` is set it wins; `include_item_types` remains for the
+non-search `getItems` callers. Document this so a future reader does not send
+both.
+
+**`All` sends no filter.** Preserve the existing invariant: `All` must omit
+`includeItemTypes` entirely, not send the union of every enumerated type — types
+nobody listed (Person, folders) would otherwise be filtered out. This is why
+`item_types()` returns `Option`, and the command must skip the filter on `None`.
+
+### Rust owns result bucketing (result side)
+
+Results arrive **pre-grouped**. Rust classifies each returned `MediaItem` into a
+group by its type — the `GROUP_ITEM_TYPES` knowledge, moved to the authority:
+
+```rust
+#[derive(specta::Type, Serialize, Deserialize, Clone, Copy, Debug)]
+#[serde(rename_all = "camelCase")]
+pub enum SearchGroupId { Songs, Albums, Artists, Movies, TvShows }
+
+#[derive(specta::Type, Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct SearchGroup { pub id: SearchGroupId, pub items: Vec<MediaItem> }
+
+#[derive(specta::Type, Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct GroupedSearchResult { pub groups: Vec<SearchGroup> }
+```
+
+Rust emits **every** non-empty group it can classify, in a stable canonical
+order. It does **not** apply the user's ordering or drop out-of-scope groups —
+those are presentation and stay frontend-side (see below). Items whose type maps
+to no group are omitted from grouped output (same as today's frontend filter).
+
+### 🔴 The `search-event` wrinkle — both payloads must change
+
+Search returns results **twice**: the command resolves with instant local-cache
+results, then the merged cache+server union arrives later via the `search-event`
+listener (see [library.ts](../../src/lib/stores/library.ts) `search()` and
+[architecture/03-data-flow.md](../architecture/03-data-flow.md)). **Both** the
+command return value **and** the `search-event` payload must carry
+`GroupedSearchResult`. If only one is converted, the instant results group and
+the merged ones do not (or vice versa), and the UI flickers between shapes. This
+is the single largest part of the change and the easiest to half-do.
+
+### What the frontend keeps (all pure presentation)
+
+[searchScope.ts](../../src/lib/utils/searchScope.ts) **retains**:
+
+- `SearchScope` type — now sourced from the generated bindings, mirroring the
+  Rust enum (delete the hand-written union).
+- `SCOPE_LABELS`, `SEARCH_SCOPES` (chip labels / order).
+- `resolveSearchScope(pathname)` — route → initial scope. Pure, DOM-free,
+  unit-tested. **Stays exactly as-is.**
+- `SearchGroupId` (from bindings), `GROUP_LABELS`.
+- `normalizeGroupOrder`, `groupsForScope`, `moveGroup`, `reorderGroups`,
+  `DEFAULT_GROUP_ORDER` — group-order persistence and reordering, all
+  presentation.
+
+[searchScope.ts](../../src/lib/utils/searchScope.ts) **loses**:
+
+- `SCOPE_ITEM_TYPES`, `GROUP_ITEM_TYPES` (moved to Rust).
+- `scopeItemTypes()`, `groupItemTypes()`.
+- The `.type`-inspecting body of `composeSearchGroups()`.
+
+`composeSearchGroups()` shrinks to a **presentation composition over Rust's
+groups** — no `.type` inspection anywhere:
+
+```ts
+// Take Rust's pre-bucketed groups; drop out-of-scope, sort by saved order,
+// attach labels, omit empties. No Jellyfin type vocabulary.
+composeSearchGroups(groups: SearchGroup[], scope, order): DisplayGroup[]
+```
+
+`GROUP_SCOPE` (which group belongs to which scope) is a borderline case: it is
+"is Songs part of the Music scope," arguably taxonomy. But because Rust already
+filtered the query by scope, out-of-scope groups will simply be **empty** and
+drop out via the empty-omit rule — so the frontend does not strictly need
+`GROUP_SCOPE` for correctness once Rust filters. **Recommendation:** delete
+`GROUP_SCOPE` and rely on empty-omission; if kept for belt-and-suspenders, treat
+it as a display hint, not authority.
+
+### Frontend call-site changes
+
+- [library.ts](../../src/lib/stores/library.ts) `search(query, scope)` sends
+  `{ scope }` in `SearchOptions` instead of computing `includeItemTypes`.
+  Everything else (requestId bump, stale guard, 10s timeout, empty-query clear,
+  event merge) is preserved.
+- [SearchResults.svelte](../../src/lib/components/search/SearchResults.svelte)
+  consumes `SearchGroup[]` from the store instead of a flat `MediaItem[]` +
+  client-side `composeSearchGroups(results, …)`. The store now holds grouped
+  results.
+- [search/+page.svelte](../../src/routes/search/+page.svelte) is unchanged in
+  behaviour; only the type it passes to `SearchResults` changes.
+
+## Out of scope
+
+- Any change to online/offline `include_item_types` **filtering** — it already
+  works; only the *source* of the type list moves.
+- Single concrete-type list pages (see "What is not a leak").
+- Ranking within or across groups.
+- The UX / chip behaviour / persistence mechanism — all unchanged from
+  [scoped-search.md](scoped-search.md).
+
+## Acceptance criteria
+
+- [ ] No Jellyfin item-type string literal (`"MusicAlbum"`, `"Audio"`, …) remains
+      in `searchScope.ts` or any search call path. Verify:
+      `grep -rn '"MusicAlbum"\|"MusicArtist"\|"Audio"\|"Series"\|"Episode"\|"Movie"\|"Playlist"' src/lib/utils/searchScope.ts src/lib/stores/library.ts` returns nothing.
+- [ ] `SearchScope` and `SearchGroupId` in the frontend come from the generated
+      `bindings.ts`, not hand-written unions.
+- [ ] Search behaviour is **identical** to today for the user: same scoping, same
+      groups, same order, same empty/out-of-scope omission, offline included.
+- [ ] Both the command return and the `search-event` payload carry the grouped
+      shape; no shape flicker between instant and merged results.
+- [ ] `All` scope still sends no `includeItemTypes` (assert in a Rust test).
+- [ ] Adding a hypothetical new type to a scope requires editing **only** Rust.
+- [ ] `cargo fmt` clean, `cargo clippy` clean, `bun run test:rust` passes.
+- [ ] `bun run check` and `bun run test` pass; `bindings.ts` regenerated and
+      committed.
+
+## Testing
+
+**Rust** (`src-tauri`, `cargo test`):
+- `SearchScope::item_types()`: each scope's list, and `All` → `None`.
+- Search command: `scope: Music` resolves to the four music types on the query;
+  `scope: All` sends no `include_item_types`.
+- Bucketing: a mixed `Vec<MediaItem>` classifies into the right `SearchGroupId`s;
+  unknown types are dropped; groups come out in canonical order.
+- The `search-event` payload is the grouped shape (guard the wrinkle).
+
+**Frontend** (vitest, `src/lib/**/*.test.ts`) — update existing tests:
+- `librarySearchScope.test.ts` currently asserts `includeItemTypes` on the
+  outgoing options — **rewrite** to assert `scope` is sent instead.
+- `searchScope.test.ts` — drop `scopeItemTypes`/`groupItemTypes` cases; keep and
+  extend `resolveSearchScope`, order normalize/move/reorder, and the new
+  compose-over-groups (order + empty-omit, no type inspection).
+- `searchGroupOrder.test.ts` — unchanged.
+
+## TRACES
+
+Per [CLAUDE.md](../../CLAUDE.md), tag requirement-implementing code:
+- `SearchScope` enum + `item_types()` + search command scope resolution:
+  `UR-049 | DR-063` (revised — resolution now Rust-side).
+- Grouped result shape + bucketing: `UR-050 | DR-067` (revised) + a new DR for
+  the wire shape.
+- `library.ts` store change: `UR-049 | DR-065` (revised — sends scope not types).
+
+## Notes for the implementer
+
+- This spec **revises** [scoped-search.md](scoped-search.md) §Background 2 and
+  §Design "Scope model / Threading scope through the store," which asserted no
+  Rust change. Update that spec's status to note the boundary was moved, or add a
+  banner pointing here — do not leave the two specs contradicting silently.
+- The IPC camelCase rule applies to the new enums and structs
+  ([CLAUDE.md](../../CLAUDE.md)): `#[serde(rename_all = "camelCase")]` on structs;
+  the tagged-enum tag convention if any enum becomes tagged. Add/extend a
+  `tauriIntegration`-style test if a new command is introduced.
+- Regenerate `bindings.ts` via the tauri-specta build step after changing Rust
+  types; do not hand-edit it.
+- **Another Claude session may be active in these same files** (per project
+  memory). `git diff` before repairing anything unexpected; these search files
+  are exactly the ones a parallel session touched.

docs/specs/scoped-search.md

@@ -0,0 +1,202 @@
+# Spec: Context-scoped search with filter chips and configurable group order
+
+> ⚠️ **Superseded in part by
+> [scoped-search-boundary.md](scoped-search-boundary.md).** The "frontend only,
+> no Rust changes" decision below (§Background 2, §Design "Scope model" and
+> "Threading scope through the store") left Jellyfin's item-type taxonomy in the
+> presentation layer, which violates the backend/frontend boundary. The taxonomy
+> is being moved into Rust. The **user-facing behaviour and UX in this spec are
+> unchanged**; only where the scope→item-type mapping and result bucketing live
+> changes. Read the boundary spec before touching search code.
+
+**Status:** Implemented (boundary revision pending — see banner above)
+**Scope:** Frontend only. No Rust changes required. *(Revised — see banner.)*
+**Requirements:** UR-049 → DR-063, DR-064, DR-065; UR-050 → DR-066, DR-067
+(see [requirements.md](../requirements.md)).
+**UX spec:** [ux-flows.md §6](../ux-flows.md) — §6.1 scope, §6.2 layout,
+§6.3 group order, §6.4 current deviations.
+
+## Summary
+
+Two related changes to search:
+
+1. **Scope** — a search started inside a library searches *that* library.
+   Started from Home, `/library`, or the search tab, it searches everything.
+   The active scope shows as a chip row under the search bar, preselected from
+   context and freely changeable without retyping.
+2. **Group order** — the order result groups appear in (Songs, Albums, Artists,
+   Movies, TV Shows) becomes a drag-and-drop setting instead of being hardcoded.
+
+## Motivation
+
+Searching "office" while browsing TV currently returns music albums, because
+both search entry points call the same unscoped query. The user has already
+told us what they're looking at; ignoring that makes search feel indiscriminate
+and pushes the relevant result below unrelated media.
+
+## Background: what already exists
+
+Verified in code — **most of the plumbing is already there.** This is
+substantially a wiring task, not new infrastructure.
+
+1. **`SearchOptions` already carries the filter.**
+   [bindings.ts](../../src/lib/api/bindings.ts) —
+   `SearchOptions = { limit?, includeItemTypes?, searchTerm? }`.
+
+2. **Rust already honours `include_item_types` on both paths** — online
+   ([online.rs](../../src-tauri/src/repository/online.rs), in the `get_items`
+   options mapping) and offline
+   ([offline.rs](../../src-tauri/src/repository/offline.rs), which builds a SQL
+   type filter from it). **Do not add Rust code for filtering.**
+
+3. **Per-page list search already does this correctly.**
+   [GenericMediaListPage.svelte](../../src/lib/components/library/GenericMediaListPage.svelte)
+   passes `includeItemTypes: [config.itemType]` to `repo.search(...)`. Use it as
+   the reference for the call shape, including the `requestId` handling.
+
+4. **The gap is exactly one function.**
+   [library.ts](../../src/lib/stores/library.ts) — `search(query)` takes only a
+   query and calls `repo.search(query, { limit: 10000 }, requestId)`, dropping
+   any scope. Both callers
+   ([search/+page.svelte](../../src/routes/search/+page.svelte) and
+   [library/+layout.svelte](../../src/routes/library/+layout.svelte)) go through
+   it.
+
+5. **Group order is hardcoded in markup.**
+   [SearchResults.svelte](../../src/lib/components/search/SearchResults.svelte)
+   categorizes into `music{tracks,albums,artists} / movies / tvShows` and
+   renders three fixed sections in source order.
+
+6. **Frontend preferences persist via `localStorage`**, per the existing
+   `viewMode` precedent in [library.ts](../../src/lib/stores/library.ts)
+   (`jellytau-view-mode`). Follow that pattern — **do not** add a Rust settings
+   command for this.
+
+## Design
+
+### Scope model
+
+One `SearchScope` type, defined once and shared:
+
+| Scope | `includeItemTypes` | Chip label |
+|-------|--------------------|------------|
+| `all` | *unset* | All |
+| `music` | `MusicAlbum`, `MusicArtist`, `Audio`, `Playlist` | Music |
+| `movies` | `Movie` | Movies |
+| `tv` | `Series`, `Episode` | TV |
+
+`all` must send **no** `includeItemTypes` key rather than a list of every type —
+the two are not equivalent for item types not enumerated here (Person, folders).
+
+### Route → scope resolution (DR-063)
+
+A pure function, unit-testable without a DOM:
+
+```ts
+resolveSearchScope(pathname: string): SearchScope
+```
+
+- `/library/music*` → `music`
+- `/library/movies*` → `movies`
+- `/library/tv*` → `tv`
+- `/`, `/library`, `/search`, anything else → `all`
+
+Note `/library/shows/genres` exists as a route; treat `shows` as `tv`. Check the
+current route list before finalising — do not assume this table is exhaustive.
+
+### Scope is a starting point, not a lock (DR-064)
+
+The resolved scope sets the **initial** chip only. Once the user taps a chip,
+their choice governs until they leave the search surface. Concretely: derive the
+initial value from the route, hold it in component state, and do not re-derive
+it on every navigation — otherwise a user who widens to All snaps back to TV.
+
+Changing a chip re-runs the current query at the new scope. Changing the query
+keeps the current scope.
+
+### Threading scope through the store (DR-065)
+
+Extend the store's search signature to accept an optional scope and pass
+`includeItemTypes` down to `repo.search`. Preserve the existing behaviour
+exactly: the `requestId` bump, the stale-response guard, the `search-event`
+listener merge, the 10s timeout, and the empty-query clear path. This is an
+additive parameter — no caller should break.
+
+### Group order (DR-066, DR-067)
+
+Persist an ordered array of group ids:
+
+```
+["songs", "albums", "artists", "movies", "tvShows"]   // shipped default
+```
+
+Rendering composes scope and order as **two independent axes**, in this order:
+
+1. drop groups outside the active scope,
+2. sort the remainder by the user's saved order,
+3. omit groups that came back empty.
+
+Scope never rewrites the saved order — narrowing to Music and back to All must
+restore the user's full arrangement. See [ux-flows.md §6.3](../ux-flows.md) for
+the worked example.
+
+Settings gets a reorderable list. **Dragging alone is not sufficient**: provide
+keyboard-operable move up/down controls with proper labels, or the setting is
+unusable with a screen reader and on any pointerless input.
+
+Unknown or missing ids in the stored array must not crash rendering — treat the
+stored order as a hint, append any group it doesn't mention, and ignore ids that
+no longer exist. A user upgrading from a build with fewer groups must not lose
+the new ones.
+
+## Out of scope
+
+- Ranking *within* a group. Order is presentation-only.
+- Server-side search ranking or the Jellyfin query itself.
+- Scope chips on the per-page list search in `GenericMediaListPage` — that page
+  is already implicitly scoped by its own `itemType`.
+- Any Rust change.
+
+## Acceptance criteria
+
+- [ ] Searching from inside Music returns no movies or TV; from inside TV, no music.
+- [ ] Searching from Home, `/library`, or the search tab returns all types.
+- [ ] The chip row renders under the search bar on both the search page and the
+      in-library header search, with the context-derived chip preselected.
+- [ ] Tapping a chip re-runs the search with the query preserved; editing the
+      query preserves the selected chip.
+- [ ] Tapping "All" from a context-scoped search widens results without retyping.
+- [ ] Result groups render in the user's configured order, with out-of-scope and
+      empty groups omitted and relative order preserved.
+- [ ] Group order is reorderable by drag **and** by keyboard, persists across
+      restarts, and ships with the documented default.
+- [ ] Offline search respects scope (the offline path already filters — verify,
+      don't reimplement).
+- [ ] `bun run check` and `bun run test` pass.
+
+## Testing
+
+Follow the existing frontend test conventions (vitest, `src/lib/**/*.test.ts`).
+
+- `resolveSearchScope` — pure unit tests over the route table, including the
+  `/library/shows/genres` case and unknown routes falling back to `all`.
+- Scope → `includeItemTypes` mapping, asserting `all` omits the key entirely.
+- The compose step: scope filter + user order + empty-group omission, including
+  the "narrow then widen restores order" case and a stored order containing an
+  unknown id.
+- Store-level: scoped search forwards `includeItemTypes` to the repository, and
+  the existing stale-`requestId` guard still discards superseded responses.
+
+New requirement-implementing code needs `TRACES:` comments — see
+[CLAUDE.md](../../CLAUDE.md). Suggested tags: the scope resolver and chip row
+`UR-049 | DR-063, DR-064`, the store change `UR-049 | DR-065`, the settings list
+and ordered rendering `UR-050 | DR-066, DR-067`.
+
+## Notes for the implementer
+
+- Read [ux-flows.md §6](../ux-flows.md) first — it is the behavioural spec; this
+  document is the implementation plan.
+- The IPC camelCase rule applies to anything new that crosses the boundary
+  ([CLAUDE.md](../../CLAUDE.md)) — though this change should not add commands.
+- Another session may be active in this repo. Check `git diff` before
+  "repairing" unexpected changes.

docs/specs/video-background-audio.md

@@ -0,0 +1,233 @@
+# Spec: Background audio for video playback (Android)
+
+**Status:** Draft
+**Scope:** Android only (v1). Linux noted as future work.
+**Branch base:** `android-picture-in-picture`
+**Requirements:** UR-040 → IR-025, JA-032, DR-051, DR-052 (see
+[requirements.md](../requirements.md)). Tests: UT-059, UT-060, UT-061, IT-013.
+
+## Summary
+
+Add a per-player toggle that lets the **audio** of a video keep playing when the
+app is backgrounded or the screen is locked, while **video decoding stops**.
+When the app returns to the foreground, video decoding resumes from the current
+audio position.
+
+This is the audio-first counterpart to the existing Picture-in-Picture feature
+(which keeps the *whole video* decoding in a floating window). The two are
+mutually exclusive: enabling background audio suppresses auto-PiP.
+
+## Motivation
+
+Users watching talk-heavy content (podcasts-as-video, lectures, music videos,
+concert films) want to lock the phone or switch apps and keep listening without
+draining battery on video decode or needing a visible floating window.
+
+## Background: how playback actually works here
+
+Two facts drive the entire design (verified in code, not assumed):
+
+1. **Video renders through the HTML5 `<video>` element in the WebView on both
+   platforms.** The native ExoPlayer *video* surface path is disabled — see the
+   INTERIM override in
+   [VideoPlayer.svelte](../../src/lib/components/player/VideoPlayer.svelte)
+   around the `playerPlayItem` response handling (`useHtml5Element` is forced
+   `true`, native backend is stopped). So "video decoding" == the WebView
+   `<video>` element, and the WebView is what Android suspends on background.
+
+2. **An Android WebView `<video>` element does not keep playing audio when the
+   app is backgrounded / locked.** The system throttles the WebView and media
+   pauses. Keeping audio alive in the background requires a **native foreground
+   media service**, which already exists for music:
+   [`JellyTauPlaybackService`](../../src-tauri/android/src/main/java/com/dtourolle/jellytau/player/JellyTauPlaybackService.kt)
+   +
+   [`JellyTauPlayer`](../../src-tauri/android/src/main/java/com/dtourolle/jellytau/player/JellyTauPlayer.kt)
+   (ExoPlayer) + `MediaSessionCompat`.
+
+**Therefore the design is a handoff**, not "keep the WebView alive": on
+background, stop the WebView `<video>` and start audio-only playback of the same
+item through the existing native ExoPlayer audio service; on foreground, hand
+back to the WebView `<video>`.
+
+This also aligns with the project's one-directional playback rule
+(`CLAUDE.md` → "Playback state is one-directional"): the currently-authoritative
+player (WebView element **or** native audio service) drives position; the UI and
+MediaSession consume it. The handoff is a change of *which* player is
+authoritative, and must transfer position cleanly.
+
+## User-facing behavior
+
+### The toggle
+
+- A toggle button in the video player controls (next to the existing PiP /
+  fullscreen buttons in
+  [VideoPlayer.svelte](../../src/lib/components/player/VideoPlayer.svelte)).
+- Icon: headphones / "audio-only" glyph. Two visual states (on/off).
+- **Visible only when** `isPipSupported()`-equivalent conditions hold — i.e.
+  Android with a native audio service available. Hidden on Linux in v1.
+- State is a UI preference on the player. Consider persisting the last choice
+  per user (see Open Questions) — v1 may default OFF each session.
+
+### When toggle is ON and the app goes to background / screen locks
+
+1. Auto-PiP is suppressed (see "Interaction with PiP").
+2. The WebView `<video>` is paused and its decode stopped (release the media
+   source so the decoder is freed, not merely `pause()`).
+3. Native audio-only playback of the same item starts at the current position,
+   through `JellyTauPlaybackService` (foreground notification + lockscreen
+   controls via the existing `MediaSessionCompat`).
+4. Lockscreen / notification shows the item with play/pause/seek, driven by the
+   native player (existing music behavior — reused, not rebuilt).
+
+### When toggle is ON and the app returns to foreground
+
+1. Native audio playback stops; its final position is captured.
+2. WebView `<video>` reloads/resumes at that position and continues as normal
+   audiovisual playback.
+3. Playback state (playing/paused) is preserved across the handoff.
+
+### When toggle is OFF (default)
+
+Current behavior is unchanged: backgrounding video auto-enters PiP
+(`onUserLeaveHint` → `PictureInPictureManager.enterPip`).
+
+## Interaction with PiP
+
+The toggle chooses one behavior or the other:
+
+- Toggle **ON** → call `AndroidPictureInPicture.setAutoEnterEnabled(false)` (the
+  bridge already exists,
+  [pictureInPicture.ts](../../src/lib/utils/pictureInPicture.ts) →
+  `setAutoEnterEnabled`). Background → audio handoff instead of PiP.
+- Toggle **OFF** → `setAutoEnterEnabled(true)`. Background → PiP (status quo).
+
+The frontend must also call `setAutoEnterEnabled(false)` on unmount if it left
+it enabled, and re-assert the correct value whenever the toggle changes, so a
+stale setting can't leak into the next player.
+
+> Note: `canEnterPip()` today requires `isPlayingVideo()` on the *native*
+> ExoPlayer, but video plays via the WebView, so native `isPlayingVideo()` is
+> false during normal playback. Confirm during implementation how auto-PiP is
+> actually triggering today (it may rely on a different signal), because the
+> background-audio handoff needs the same "is a local video active" signal to
+> know it should fire. **This is a load-bearing unknown — resolve it first
+> (Phase 0).**
+
+## Technical design
+
+### The audio-only stream
+
+Jellyfin can transcode/stream a video item as audio-only. Add a repository
+method (mirroring
+[`get_video_stream_url`](../../src-tauri/src/repository/online.rs) and
+[`get_audio_stream_url`](../../src-tauri/src/repository/mod.rs)) that returns an
+**audio-only stream URL for a video item** at a given audio-stream index — so
+the currently-selected audio track (`selectedAudioTrackIndex` in the player)
+carries over. Prefer direct-play of the audio stream where the container/codec
+allows; transcode to a broadly-supported audio codec otherwise.
+
+Position semantics must match between the WebView `<video>` timeline and the
+audio stream (account for the transcoded-HLS `seekOffset` model already in the
+player — see the `seekOffset` handling in `VideoPlayer.svelte`).
+
+### Backend command surface (Rust)
+
+New/extended `#[tauri::command]`s in `src-tauri/src/commands/player/` (follow the
+camelCase param rule and `Result<T, String>` convention):
+
+- `player_enter_background_audio(item_id, position_seconds, audio_stream_index)`
+  — stop WebView authority, start native audio-only playback at position; makes
+  the native player authoritative. Emits state via the existing player-event
+  channel so MediaSession/UI stay consumers.
+- `player_exit_background_audio() -> position_seconds` — stop native audio,
+  return final position for the WebView to resume from; restores WebView
+  authority.
+
+Reuse existing `player_play_*` / `player_stop` plumbing where possible rather
+than adding a parallel path.
+
+### Android native
+
+- Reuse `JellyTauPlaybackService` + `JellyTauPlayer` audio path
+  (`MediaSessionCompat`, foreground notification, audio-becoming-noisy, etc. —
+  all already implemented for music).
+- Add a bridge method (alongside `AndroidPictureInPicture`) or reuse an existing
+  one so the frontend can signal "prepare for background audio handoff" tied to
+  the Activity lifecycle (`onPause`/`onStop`/`onUserLeaveHint`).
+- On `onUserLeaveHint` / screen-off with background-audio enabled: **do not**
+  enter PiP; instead trigger the handoff command.
+- Respect the deadlock gotchas in `CLAUDE.md` (no sync/blocking calls from
+  player event callbacks; bind locked `AutoplayDecision` to a `let` before
+  matching).
+
+### Frontend (VideoPlayer.svelte)
+
+- Add toggle state + button. On change, call `setAutoEnterEnabled(!on)`.
+- Listen for Android lifecycle background/foreground signals (via a bridge event
+  or existing visibility hooks) and:
+  - background + ON → `player_enter_background_audio(...)`, pause + tear down the
+    `<video>`/HLS decode (reuse the existing HLS teardown sequence to avoid dual
+    audio).
+  - foreground + ON → `player_exit_background_audio()`, reload `<video>` at the
+    returned position, restore play/pause state.
+- **Follow the native-mode pitfall** (memory:
+  `videoplayer-native-mode-pitfalls`): no lifecycle calls after an `await` in
+  `onMount`. Keep the handoff logic out of that window.
+- Dual-audio is the key regression risk: at every handoff exactly one of
+  {WebView `<video>`, native ExoPlayer} produces audio. Tear the other down
+  *before* starting the next, mirroring the existing HLS cleanup discipline.
+
+## Phasing
+
+- **Phase 0 — De-risk (do first):**
+  - Confirm what actually triggers today's auto-PiP given video is on the
+    WebView (resolve the `canEnterPip`/`isPlayingVideo` question).
+  - Spike: obtain an audio-only stream URL for a video item and play it through
+    the native audio service; measure position accuracy and that WebView audio
+    is fully silenced (no dual audio).
+- **Phase 1 — Backend:** repository audio-only-URL method + the two player
+  commands + events.
+- **Phase 2 — Native:** lifecycle wiring, PiP suppression, handoff trigger.
+- **Phase 3 — Frontend:** toggle UI, lifecycle listeners, handoff calls,
+  teardown discipline.
+- **Phase 4 — Polish:** persist toggle preference, subtitle/audio-track
+  carry-over, edge cases (calls, headphone unplug, autoplay-next during
+  background audio).
+
+## Testing
+
+- Rust: unit tests for the audio-only URL builder and the two commands
+  (`cargo test`, `bun run test:rust`).
+- IPC param-naming integration tests for any new commands
+  (`bun run test -- tauriIntegration.test.ts`).
+- Frontend: `bun run check`, `bun run test`, plus a VideoPlayer logic test for
+  the handoff state machine (mirror the existing
+  `VideoPlayer.logic.test.ts`).
+- Manual on-device matrix:
+  - toggle ON: home button → audio continues, video stops decoding; return →
+    video resumes at position; playing/paused preserved.
+  - toggle ON: screen lock → audio continues; lockscreen controls work; unlock →
+    resumes.
+  - toggle OFF: background → PiP (unchanged).
+  - No dual audio at any transition. No audio leak after leaving the player.
+  - Transcoded (HEVC/10-bit) item — verify position with `seekOffset`.
+  - Autoplay-next fires correctly if an episode ends during background audio.
+
+## Open questions
+
+1. **Persist the toggle per user/series, or default OFF each session?**
+   (Recommend: remember last choice; series-level like the audio-track
+   preference is a nice-to-have.)
+2. **Autoplay-next during background audio** — should the next episode start as
+   audio-only and stay audio until foreground, or pause at episode end? (Recommend:
+   continue as audio-only.)
+3. **Subtitles** are irrelevant in audio-only mode but must restore on
+   foreground — confirm they survive the `<video>` teardown/reload.
+4. Exact **Android lifecycle signal** for "screen locked" vs "app backgrounded"
+   — `onUserLeaveHint` covers Home but not lock; may need a screen-off receiver.
+
+## Non-goals (v1)
+
+- Linux background audio (desktop windows keep running unfocused; low value).
+- Replacing or removing PiP — it stays as the toggle-OFF behavior.
+- Re-enabling the native ExoPlayer *video* surface path.

docs/traceability-ci.md

@@ -12,22 +12,22 @@ The CI/CD pipeline automatically validates that code changes are properly traced
 
 ## Gitea Actions Workflows
 
-Two workflows are configured in `.gitea/workflows/`:
+Traceability validation lives in `.gitea/workflows/traceability-check.yml`:
 
-### 1. `traceability-check.yml` (Primary - Recommended)
-Gitea-native workflow with:
 - ✅ Automatic trace extraction
 - ✅ Coverage validation against minimum threshold (50%)
 - ✅ Modified file checking
 - ✅ Artifact preservation
 - ✅ Summary reports
 
-**Runs on:** Every push and pull request
+**Runs on:** Every push and pull request to `master`/`main`/`develop`
 
-### 2. `traceability.yml` (Alternative)
-GitHub-compatible workflow with additional features:
-- Pull request comments with coverage stats
-- GitHub-specific integrations
+A second workflow, `traceability.yml`, previously duplicated this one as a
+"GitHub-compatible alternative". It was removed: CI here is Gitea Actions, and
+its only unique step (PR comments via `actions/github-script`) depended on the
+GitHub REST client, which Gitea does not provide. To add PR comments, post to
+Gitea's `/api/v1/repos/{owner}/{repo}/issues/{index}/comments` from
+`traceability-check.yml` rather than reviving the old file.
 
 ## What Gets Validated
 

docs/ux-flows.md

@@ -36,21 +36,74 @@ On desktop (md breakpoint and above), the header contains:
 - Logo (links to `/library`)
 - Navigation links: Home, Library, Downloads, Settings
 - Search bar (inline)
-- User menu: Username, Downloads icon, Logout button
+- Account menu (see §1.2)
 
 **Mobile Navigation:**
 
 On mobile, the header contains:
 - Logo
-- Three-dot overflow menu button (Android-style)
-- Overflow menu includes:
-  - Downloads
-  - Settings
-  - Sign out
+- Account menu button (see §1.2)
+
+### 1.2 Account Menu
+
+Account-level destinations — the ones that are *about the user* rather than
+about media — live behind a single **account menu**, anchored to the user's
+name/avatar at the right of the header.
+
+**Contents, in order:**
+
+```
+┌──────────────────────────┐
+│  Signed in as <name>     │   ← identity, not a menu item
+│  <server host>           │
+├──────────────────────────┤
+│  ⬇  Downloads            │
+│  ⚙  Settings             │
+│  ▦  Display              │   ← grid/list preference (§5A.2)
+├──────────────────────────┤
+│  ⇥  Sign out             │
+└──────────────────────────┘
+```
+
+**Rules:**
+
+- **One menu, both platforms.** Desktop and mobile show the same items in the
+  same order. A user who learns where Settings lives on one form factor finds
+  it in the same place on the other.
+- **Anchored to identity.** The trigger is the username/avatar, because that is
+  where users look for account actions. A bare three-dot icon does not signal
+  "your account".
+- **Sign out is separated** by a divider and placed last — it is destructive and
+  must not sit adjacent to routine navigation.
+- **The menu is reachable from every authenticated screen**, not only from
+  library routes. See §1.3.
 
 **Access Points Summary:**
-- **Downloads** → Desktop: nav link + icon; Mobile: overflow menu
-- **Settings** → Desktop: nav link; Mobile: overflow menu
+- **Downloads** → header icon (desktop) + account menu (both)
+- **Settings** → header nav link (desktop) + account menu (both)
+- **Sign out** → account menu only
+
+### 1.3 Chrome availability
+
+The header is shared across chrome-bearing routes. Routes fall into three groups:
+
+| Route group | Header | Bottom nav | Account menu reachable? |
+|-------------|--------|------------|-------------------------|
+| `/library/*` | Yes (own layout, shared `AppHeader`) | Yes | Yes |
+| `/`, `/search`, `/downloads` | Yes (root-owned `AppHeader`) | Yes | Yes |
+| `/settings` | Own layout | No | n/a — already there |
+| `/player/*`, `/login` | No | No | No (by design) |
+
+The rule the app honours: every authenticated, non-immersive screen exposes the
+account menu. Only the full-screen player and the login screen are chrome-free.
+
+### 1.4 Known deviations
+
+*(None — the account-menu and chrome-availability defects tracked here under
+UR-054 were resolved. Settings, Downloads, Display, and Sign out are now reachable
+from every authenticated non-immersive screen via the shared `AccountMenu`, the
+username/avatar is the menu trigger, desktop and mobile share one menu, and the
+Display preference has a Settings entry — UR-029, §5A.4.)*
 
 ---
 
@@ -386,9 +439,9 @@ flowchart TB
 
 ```mermaid
 flowchart TB
-    AlbumsGrid[Albums Grid<br/>FORCED Grid View] --> UserAction{User Action}
+    AlbumsGrid[Albums Grid<br/>grid/list per §5A] --> UserAction{User Action}
 
-    UserAction -->|Click Album| AlbumDetail[Album Detail Page<br/>/library/[albumId]]
+    UserAction -->|Click Album| AlbumDetail[Album Detail Page<br/>/library/[id]]
     UserAction -->|Click Play on Card| PlayAlbum[Play Album Immediately]
 
     AlbumDetail --> ShowAlbum[Show Album:<br/>- Album Art<br/>- Title, Artist<br/>- Track List<br/>- Download Button<br/>- Favorite Button]
@@ -445,54 +498,387 @@ flowchart TB
 
 ---
 
-## 6. Search Flow
+## 5A. Library Page Layouts
 
-### 6.1 Search Page Navigation
+Every browse page is one of two shapes: a **card grid** or a **row list**. This
+section is the rule for which shape a page takes, what a card looks like, and
+what the user is allowed to change.
+
+### 5A.1 Card shape follows the media, not the page
+
+Card aspect ratio is a property of *what the item is*, and is never overridden
+per-page. This is the single most important layout rule: a user scanning a grid
+recognises content type by silhouette before reading a word.
+
+| Item type | Aspect | Rationale |
+|-----------|--------|-----------|
+| Album, Artist, Track, Playlist | **1:1 square** | Matches album art; the universal music convention (Spotify) |
+| Movie, Series, Season | **2:3 poster** | Matches printed poster art; the universal video convention (Netflix) |
+| Episode | **16:9 thumbnail** | A frame from the episode, not cover art — signals "a thing you watch next" |
+| Library / collection folder | **16:9** | Reads as a container, distinct from the items inside it |
+
+Artist cards are square but rendered **circular-masked**, so artists are
+distinguishable from albums at a glance within the same music grid.
+
+### 5A.2 Grid vs. list
 
 ```mermaid
 flowchart TB
-    BottomNav[Bottom Nav] --> ClickSearch[Click Search Tab]
+    Page[Library browse page] --> Kind{Content kind}
 
-    ClickSearch --> SearchPage[Search Page<br/>/search]
+    Kind -->|Visual-first<br/>albums, artists, movies,<br/>shows, playlists| Grid[Card grid<br/>user may switch to list]
+    Kind -->|Ordinal<br/>tracks in an album,<br/>episodes in a season| List[Row list<br/>always; no toggle]
 
-    SearchPage --> EmptyState{Has Query?}
-
-    EmptyState -->|No| ShowPrompt[Show Empty State:<br/>Search for music,<br/>movies, shows...]
-    EmptyState -->|Yes| ShowResults[Show Results Grouped:<br/>- Songs<br/>- Albums<br/>- Artists<br/>- Movies<br/>- Episodes]
-
-    ShowPrompt --> UserTypes[User Types in Search]
-    UserTypes --> LiveSearch[Live Search<br/>Debounced 300ms]
-    LiveSearch --> ShowResults
-
-    ShowResults --> UserClick{User Clicks Result}
-
-    UserClick -->|Song| PlaySong[Play Song + Queue Results]
-    UserClick -->|Album| NavAlbum[Navigate to Album Detail]
-    UserClick -->|Artist| NavArtist[Navigate to Artist Page]
-    UserClick -->|Movie| NavMovie[Navigate to Movie Detail]
+    Grid --> Toggle[View toggle in page header]
+    Toggle --> Persist[Choice persists globally<br/>across all grid pages]
 ```
 
-**Search Page Layout:**
+- **Grids are the default** for anything with cover art worth scanning.
+- **Lists are mandatory, not optional**, where position carries meaning —
+  a track's number within an album, an episode's number within a season.
+  A grid destroys that ordering cue, so these pages expose **no toggle**.
+- **The toggle is global, not per-page.** A user who prefers dense lists
+  prefers them everywhere; making them re-set it on each page is friction.
+  The choice persists across launches.
+
+**Responsive columns** (grid mode), tuned so cards stay large enough to read
+cover art on a phone and don't become postage stamps on a desktop:
+
+| Breakpoint | Columns |
+|------------|---------|
+| base (phone) | 2 |
+| sm | 3 |
+| md | 4 |
+| lg | 5 |
+| xl | 6 |
+
+### 5A.3 What a card shows
+
+```
+   ┌─────────────┐
+   │             │   ← cover art (aspect per §5A.1)
+   │   artwork   │     • progress bar overlay if partially played
+   │             │     • watched/played check if complete
+   │        [▶]  │     • play affordance on hover/focus
+   └─────────────┘
+   Primary line       ← title, truncated to one line
+   Secondary line     ← artist / year+rating / SxEy — one line, dimmed
+```
+
+- **Two lines of text maximum.** Titles truncate rather than wrap; a card that
+  grows to fit its title breaks grid alignment and makes scanning harder.
+- **Progress and watched state live on the artwork**, not in the text — they
+  must be readable while scanning, without reading.
+- **Hover/focus reveals play**, so a card is both a navigation target and a
+  playback target without a second control competing for space at rest.
+
+### 5A.4 Known deviations
+
+These are places the implementation currently diverges from the rules above.
+They are recorded here so the gap is explicit rather than mistaken for intent.
+
+- **The view toggle is discoverable only on a browse page.** The preference is
+  already global and persisted, but the only control that sets it is the pair
+  of icon buttons in a library page header. Settings has no display section, so
+  there is nowhere to look for it. *(UR-029)*
+
+---
+
+## 5B. Video Detail Page Composition
+
+Movie, Series, and Episode detail pages all live at `/library/[id]`. Which
+surface renders is decided by item type plus the `?episode=` query param, and
+**section order is part of the spec** — it is what makes "keep watching this
+show" the path of least resistance.
+
+### 5B.1 Which surface renders
+
+```mermaid
+flowchart TB
+    Nav[Navigate to /library/&#91;id&#93;] --> Type{Item type}
+
+    Type -->|Person| Person[PersonDetailView]
+    Type -->|Movie| Movie[Movie detail<br/>§5B.3]
+    Type -->|Series| Ep{?episode= param<br/>present?}
+
+    Ep -->|Yes| Focus[Episode Focus View<br/>§5B.2]
+    Ep -->|No| Series[Series detail<br/>§5B.4]
+
+    Focus -->|Back to series| Series
+    Series -->|Click episode| Focus
+```
+
+An episode is **never** browsed as a bare `Episode` item page. Clicking an
+episode anywhere — a series' season list, a Home carousel (§5B.5), etc. —
+navigates to `/library/<seriesId>?episode=<episodeId>`, so the episode is always
+shown in the context of its series and the series' full episode list is already
+loaded. Should an episode ever arrive without a `seriesId` (deep link, stale
+cache), the bare Episode page renders as a fallback and links back to its parent
+series and season by title so the user is never stranded.
+
+### 5B.2 Episode Focus View — section order
+
+**The next episodes appear directly below the current episode, above cast and
+similar shows.** Nothing may be inserted between the episode hero and the
+episode strip.
+
+```
+┌─────────────────────────────────────────────────┐
+│ [←]                                             │
+│   ┌───────────────────────────────────────────┐ │
+│   │            episode backdrop               │ │
+│   │  Series Name                              │ │  ← 1. HERO
+│   │  Episode Title                            │ │
+│   │  S2E4 • 48m • ★8.1                        │ │
+│   │  Overview…                                │ │
+│   │  ▓▓▓▓▓░░░░░  32m left                     │ │
+│   │  [▶ Play]                                 │ │
+│   └───────────────────────────────────────────┘ │
+│                                                 │
+│  More Episodes                                  │  ← 2. EPISODE STRIP
+│  ┌──────┐┌──────┐┌──────┐┌──────┐               │     (immediately below hero)
+│  │ E3   ││▓E4▓  ││ E5   ││ E6   │  →  scroll    │
+│  │      ││NOW   ││      ││      │               │
+│  └──────┘└──────┘└──────┘└──────┘               │
+│                                                 │
+│  Cast                                           │  ← 3. CAST
+│  ( ○ )( ○ )( ○ )( ○ )                           │
+│                                                 │
+│  More Like This                                 │  ← 4. SIMILAR
+│  ┌────┐┌────┐┌────┐┌────┐                       │
+└─────────────────────────────────────────────────┘
+```
+
+**Rules for the episode strip:**
+
+- **Position is fixed.** Hero → episode strip → cast → similar. The strip sits
+  between the current episode and every other section; cast and related
+  content are *below* it, never above.
+- **Window, not full list.** The strip shows a window around the current
+  episode — roughly 3 before and 6 after — so the immediate next episodes are
+  visible without scrolling, and earlier ones remain reachable by scrolling
+  left. It is horizontally scrollable, not a wrapped grid.
+- **Forward bias.** More episodes are shown *after* the current one than
+  before it: the dominant intent on this screen is "watch the next one."
+- **The current episode is present and marked.** It renders in-strip with a
+  "NOW" badge and a highlight ring, and is not clickable. It anchors the
+  user's position in the season rather than being hidden.
+- **Cross-season continuity.** The window spans the whole series in episode
+  order, so the strip runs past a season boundary into the next season's first
+  episodes rather than dead-ending at the end of a season.
+- **Per-episode state.** Each card shows a thumbnail, `SxEy` + title, a resume
+  progress bar when partially watched, and a watched checkmark when complete.
+- **Clicking an episode swaps focus in place** (`?episode=` changes); it does
+  not start playback. Playback starts only from the hero's Play button.
+
+### 5B.3 Movie detail — section order
+
+```
+Hero (poster, title, metadata, Play / Download / Favorite)
+  → Crew links (Directed by / Written by / Music by)
+  → Genre tags
+  → Cast
+  → More Like This
+```
+
+A movie has no continuation set, so cast follows the hero directly.
+
+### 5B.4 Series detail — section order
+
+```
+Hero (poster, title, metadata, Play / Download)
+  → Crew links
+  → Genre tags
+  → Seasons + episodes (per-season sections)
+  → Cast
+  → More Like This
+```
+
+The same principle as §5B.2: **episodes come before cast and similar shows.**
+The reason a user opens a series page is to pick an episode; discovery content
+is secondary and sits underneath.
+
+### 5B.5 Home-card interaction — tap opens, long-press plays
+
+Cards on the Home screen carousels (Next Movie, Next Episode, Continue
+Watching, Recently Added, …) **do not play on tap.** A plain tap opens the
+item; playback is the deliberate, second gesture.
+
+| Card kind | Tap (short) | Long-press (~500 ms hold) |
+|-----------|-------------|---------------------------|
+| Movie | Movie detail page (`/library/<id>`) | Confirm → play now (`/player/<id>`) |
+| Episode | Series Episode Focus View (`/library/<seriesId>?episode=<id>`, per §5B.1) | Confirm → play now (`/player/<id>`) |
+| Series / Season / Album / Artist / Playlist / Folder | Detail page (`/library/<id>`) | Same as tap (no single "play now" target) |
+| Channel / live leaf | Player (`/player/<id>`) — no detail page exists | Confirm → play now |
+
+Rationale and rules:
+
+- **Tap is navigation, not commitment.** Previously a tap on a movie/episode
+  jumped straight into the player, which made it easy to lose your place in a
+  half-watched item or start a stream you only meant to inspect. Tap now lands
+  on the detail/focus page, where Play is an explicit button.
+- **Long-press is the shortcut for "just play it."** It surfaces a native
+  confirm (`Play "<name>" now?`) before starting playback, so an accidental
+  hold never blows away a resume position silently.
+- **The long-press must not fight the carousel.** Detection cancels if the
+  pointer moves more than ~10 px (a horizontal scroll of the row), so holding
+  to scroll never triggers play.
+- **Episodes still obey §5B.1** — a home tap on an episode opens the series
+  Focus View, never a bare Episode page, so the series context loads.
+
+This behavior lives in `MediaCard` (`onLongPress` prop + pointer-based
+detection) so any surface can opt in; today the Home carousels are the only
+opt-in. Grids and other surfaces keep tap-to-open with no long-press.
+
+---
+
+## 6. Search Flow
+
+Search is **context-scoped**: what you are looking at when you start a search
+determines what the search covers. A search begun inside the Music library
+searches music. A search begun from Home or the top-level library page searches
+everything. The scope is always shown, and always overridable.
+
+### 6.1 Scope is inherited from context
+
+```mermaid
+flowchart TB
+    Start[User starts a search] --> Where{Where from?}
+
+    Where -->|Home &#40;/&#41;| All[Scope: All]
+    Where -->|Library root &#40;/library&#41;| All
+    Where -->|Search tab| All
+    Where -->|Inside Music| Music[Scope: Music]
+    Where -->|Inside Movies| Movies[Scope: Movies]
+    Where -->|Inside TV| TV[Scope: TV]
+
+    All --> Chips[Filter chips shown<br/>All chip selected]
+    Music --> Chips2[Filter chips shown<br/>Music chip preselected]
+    Movies --> Chips2
+    TV --> Chips2
+
+    Chips --> Results[Results, grouped by type]
+    Chips2 --> Results
+
+    Results --> Change{User taps a chip}
+    Change --> Rescope[Re-run search at new scope<br/>query preserved]
+    Rescope --> Results
+```
+
+**Rules:**
+
+- **Context sets the *initial* chip, never a locked filter.** Entering search
+  from TV preselects the TV chip; the user can tap "All" to widen without
+  retyping the query. Scope is a starting point, not a cage.
+- **Home, `/library`, and the search tab all start at "All".** These are the
+  places a user has expressed no narrower intent.
+- **Changing scope preserves the query** and re-runs the search. Changing the
+  query preserves the scope.
+- **Scope maps to item types**, resolved at the point of search:
+
+  | Chip | `includeItemTypes` |
+  |------|--------------------|
+  | All | *(unset — every type)* |
+  | Music | `MusicAlbum`, `MusicArtist`, `Audio`, `Playlist` |
+  | Movies | `Movie` |
+  | TV | `Series`, `Episode` |
+
+- **Chips render under the search bar**, on both the dedicated search page and
+  the in-library header search. They are horizontally scrollable if they
+  overflow, never wrapped onto a second row.
+
+### 6.2 Search page layout
+
 ```
 ┌─────────────────────────────────────────┐
-│  [🔍 Search...]                [✕]     │
+│  [🔍 Search...]                  [✕]    │
+│                                         │
+│  ( All ) (•Music•) ( Movies ) ( TV )    │  ← scope chips
 │                                         │
 │  Songs ────────────────────────────     │
-│  ♪ Song Title - Artist         3:45    │
-│  ♪ Song Title - Artist         4:12    │
-│  See all (23)                          │
+│  ♪ Song Title - Artist          3:45    │
+│  ♪ Song Title - Artist          4:12    │
+│  See all (23)                           │
 │                                         │
 │  Albums ───────────────────────────     │
-│  [Album Cover] Album Title             │
-│  [Album Cover] Album Title             │
-│  See all (8)                           │
+│  [Cover] Album Title                    │
+│  See all (8)                            │
 │                                         │
 │  Artists ──────────────────────────     │
-│  [Photo] Artist Name                   │
-│  See all (5)                           │
+│  ( Photo ) Artist Name                  │
+│  See all (5)                            │
 └─────────────────────────────────────────┘
 ```
 
+- Results stay **grouped by type** even when a scope is selected — a Music
+  search still separates Songs / Albums / Artists.
+- Each group shows a bounded preview with a **See all (n)** affordance rather
+  than an unbounded list, so no single type can bury the others.
+- Live search is **debounced** as the user types; a query that becomes empty
+  clears results rather than searching for the empty string.
+
+### 6.3 Result group order is user-configurable
+
+Which *kind* of thing a user is usually searching for is personal: a
+music-first user wants Songs at the top, a TV-first user wants Shows. Rather
+than guessing, the group order is a setting.
+
+```mermaid
+flowchart TB
+    Settings[Settings → Search] --> List[Draggable list of result groups]
+
+    List --> Drag[User drags a group up or down]
+    Drag --> Persist[Order persisted]
+
+    Persist --> Render[Rendering a result set]
+    Scope[Active scope chip §6.1] --> Render
+
+    Render --> Filter[1 - Drop groups outside the active scope]
+    Filter --> Sort[2 - Sort remaining groups by user order]
+    Sort --> Prune[3 - Omit groups with no results]
+    Prune --> Show[Render]
+```
+
+**Scope and order compose — they are two independent axes.** The scope chip
+decides *which* groups are eligible; the settings list decides *what sequence*
+the eligible ones appear in. Order is preserved as a relative ranking, never
+renumbered per scope:
+
+- Scope **Music** with order `Movies → Songs → Albums → Artists → TV` renders
+  `Songs → Albums → Artists`. Movies and TV are filtered out; the surviving
+  groups keep their relative order.
+- Scope **All** with the same setting renders all five in exactly that order.
+- **Changing scope never rewrites the saved order.** A user who narrows to
+  Music and back to All sees their original arrangement intact.
+
+**Rules:**
+
+- **Drag and drop to reorder**, in a settings list showing every result group
+  (Songs, Albums, Artists, Movies, TV Shows).
+- **The order applies to grouped results everywhere** — the search page and
+  the in-library header search alike.
+- **Order is presentation-only.** It never changes which results are returned
+  or how they are ranked *within* a group, only the sequence groups appear in.
+- **Empty groups are skipped, not gapped.** A group with no results is omitted
+  entirely; it does not reserve space or leave a stray heading.
+- **A sensible default ships** (Songs → Albums → Artists → Movies → TV Shows)
+  so the setting is an adjustment, never a prerequisite.
+- **Keyboard/accessible reordering must exist** alongside dragging — a
+  drag-only control is unusable with a screen reader or without a pointer.
+
+### 6.4 Known deviations
+
+Recorded so the gap between this spec and the build is explicit.
+
+- **Scope is not implemented.** The in-library header search calls the same
+  unscoped query as the global search page, so searching inside TV returns
+  music. The backend already accepts `includeItemTypes` on both the online and
+  offline paths, and the per-page list search already uses it — only the global
+  path ignores it. *(UR-049)*
+- **Filter chips do not exist** on either search surface. *(UR-049)*
+- **Group order is hardcoded** to Music → Movies → TV in the results markup,
+  with no setting. *(UR-050)*
+
 ---
 
 ## 7. Download Flows
@@ -532,68 +918,166 @@ States:
 5. [⏸] Paused        - Yellow pause icon
 ```
 
-### 7.2 Managing Downloads Page
+### 7.2 Downloads = a browsable offline library, not a flat list
+
+**The central idea:** "my downloads" is not a list of file-transfer rows — it is
+*the library, filtered to what's on the device*. A user who has downloaded three
+seasons of a show and two albums thinks in terms of shows and albums, not
+seventy-odd individual episode/track transfers. So the primary Downloads surface
+**reuses the library browse screens**, scoped to downloaded content, and keeps
+the transfer-progress list as a secondary "Transfers" view for the *act* of
+downloading.
+
+This splits one overloaded page into two clear jobs:
+
+| Surface | Answers | Reuses |
+|---------|---------|--------|
+| **Downloaded** (browse) | "What do I have offline, and let me play it" | Library grids, detail pages, cards (§5A) |
+| **Transfers** (activity) | "What is downloading right now, and control it" | The existing progress-row list |
 
 ```mermaid
 flowchart TB
-    User[User] --> NavChoice{Navigation Path}
+    Nav[Open Downloads] --> Downloads[/downloads]
 
-    NavChoice -->|Desktop| HeaderNav[Header: Click Downloads Link]
-    NavChoice -->|Mobile| HeaderIcon[Header: Click Downloads Icon]
-    NavChoice -->|Direct| TypeURL[Type /downloads]
+    Downloads --> View{View}
+    View -->|Downloaded &#40;default&#41;| Browse[Offline library browse]
+    View -->|Transfers| Activity[Transfer activity list]
 
-    HeaderNav --> DownloadsPage[Downloads Page<br/>/downloads]
-    HeaderIcon --> DownloadsPage
-    TypeURL --> DownloadsPage
+    Browse --> Libs[Libraries — only those with<br/>downloaded content]
+    Libs --> Grid[Library grid, offline-scoped<br/>same cards/layout as online §5A]
+    Grid --> Detail[Detail page<br/>same as online]
+    Detail --> Play[Play from local file]
+    Detail --> Remove[Remove download<br/>frees space, keeps browsable? — see rules]
 
-    DownloadsPage --> ShowTabs[Show Tabs:<br/>Active | Completed]
-
-    ShowTabs --> ActiveTab{Active Tab}
-
-    ActiveTab -->|Active| ShowActive[Show Active Downloads:<br/>- Download progress bars<br/>- Pause/Resume buttons<br/>- Cancel buttons]
-    ActiveTab -->|Completed| ShowCompleted[Show Completed:<br/>- Downloaded items list<br/>- Delete buttons<br/>- Play buttons]
-
-    ShowActive --> UserAction1{User Action}
-    UserAction1 -->|Pause| PauseDownload[Pause Download]
-    UserAction1 -->|Cancel| CancelDialog[Show Confirm Dialog]
-
-    ShowCompleted --> UserAction2{User Action}
-    UserAction2 -->|Play| PlayOffline[Play from Local File]
-    UserAction2 -->|Delete| DeleteDialog[Show Confirm Dialog]
+    Activity --> Rows[Per-transfer rows:<br/>downloading / queued / paused / failed /<br/>waiting-for-WiFi]
+    Rows --> Ctl[Pause / Resume / Cancel / Retry]
 ```
 
-**Navigation to Downloads:**
-- **Desktop:** Click "Downloads" link in header navigation
-- **All screen sizes:** Click download icon (⬇) button in header user menu
-- **Direct:** Navigate to `/downloads` route
+**Why reuse the library screens (not a bespoke list):**
+
+- **One mental model.** Browsing offline should feel identical to browsing
+  online — same grids, same card shapes, same detail pages, same play action.
+  The only difference is *what's present*, not *how it looks*.
+- **It already works in the backend.** The offline repository's `get_items`
+  already returns downloaded items **plus** their containers (an album with any
+  downloaded track, a series/season with any downloaded episode). That is a
+  browsable tree today — see §7.4.
+- **It scales.** A flat completed-list becomes unusable at a few dozen items; a
+  browsable library does not.
+
+### 7.3 The Downloaded browse surface
 
-**Downloads Page Layout:**
 ```
-┌─────────────────────────────────────────┐
-│  [←] Downloads                          │
-│                                         │
-│  [Active (3)] [Completed (12)]         │
-│                                         │
-│  ─ Downloading ────────────────────     │
-│                                         │
-│  Album Cover  Album Title               │
-│               Artist Name               │
-│               [████████░░] 80%          │
-│               [⏸ Pause] [✕ Cancel]     │
-│                                         │
-│  Album Cover  Album Title               │
-│               Artist Name               │
-│               [██░░░░░░░░] 20%          │
-│               [⏸ Pause] [✕ Cancel]     │
-│                                         │
-│  ─ Queued ─────────────────────────     │
-│                                         │
-│  Album Cover  Album Title               │
-│               Artist Name               │
-│               Waiting...                │
-└─────────────────────────────────────────┘
+┌─────────────────────────────────────────────┐
+│  Downloads                                  │
+│  ( Downloaded )  ( Transfers )     ← view switch
+│                                             │
+│  [~ 3.4 GB on device · 12 items]  Manage ▸  │  ← storage summary
+│                                             │
+│  Music                                      │  ← only libraries that
+│  ┌────┐┌────┐┌────┐                          │     have downloaded content
+│  │alb ││alb ││art │                          │
+│  └────┘└────┘└────┘                          │
+│                                             │
+│  TV                                         │
+│  ┌────┐┌────┐                                │
+│  │show││show│                                │
+│  └────┘└────┘                                │
+└─────────────────────────────────────────────┘
 ```
 
+**Rules:**
+
+- **Libraries with nothing downloaded are omitted**, not shown empty. If only
+  music is downloaded, only Music appears.
+- **Cards, grids, and detail pages are the library's own** (§5A) — offline
+  browse is the same components with an offline-scoped data source, never a
+  parallel re-implementation.
+- **A downloaded badge / "on device" affordance** distinguishes fully-downloaded
+  from partially-downloaded containers (e.g. a season with 6 of 10 episodes).
+- **Disk usage is shown where the user already looks**, in familiar units — see
+  §7.3.1.
+- **Play always plays the local file** here; nothing on this surface streams.
+- **Remove is available at every level** — item, album/season, series — and
+  states clearly what it frees. Removing the last downloaded child of a
+  container removes the container from the browse.
+- **This surface works identically online and offline.** It is "what's on the
+  device," a question whose answer does not depend on connectivity. It must not
+  wait for, or be emptied by, server reachability.
+
+#### 7.3.1 Disk usage — familiar, in place, not a separate audit
+
+Users want to know what each thing costs on disk, but that information has to
+feel like the storage views they already know (phone Settings → Storage, a
+file browser), not a developer's byte dump.
+
+- **Size rides along with the item, on the card and the detail page** — a small
+  secondary label (`1.2 GB`, `340 MB`, `48 MB`), never a separate "storage
+  report" screen the user has to go find.
+- **Containers show their total.** A series shows the sum of its downloaded
+  episodes; an album the sum of its tracks; a season its own subtotal. The
+  number a user sees on the "Breaking Bad" card is what removing it frees.
+- **Human units, rounded, consistent.** Binary or decimal is a choice — pick one
+  and use it everywhere. Show 2–3 significant figures (`1.2 GB`, not
+  `1,283,048,192 bytes` and not `1.28394 GB`).
+- **A single device total sits at the top** of the Downloaded surface
+  (`3.4 GB on device · 12 items`) so the headline number is answered before the
+  user scans. It reconciles with the sum of what's listed.
+- **Remove restates the reclaim** in the same units at the point of action
+  ("Remove download · frees 1.2 GB"), so the cost of keeping vs. freeing is
+  legible exactly when the user decides.
+- **Sort/filter by size is a reasonable enhancement** ("biggest first" to find
+  what to clear) but is not required for v1.
+
+The bytes-on-disk per item are a backend fact (the download manager writes the
+files and can stat them); this is a display and aggregation task, not new
+tracking. See §7.7 deviations for what's missing today.
+
+### 7.4 Transfers (activity) view
+
+The existing progress-row list, unchanged in spirit, demoted to a secondary tab.
+It is about *transfers in flight*, so it shows only rows that are doing or
+waiting to do something:
+
+- **States:** downloading (with progress), queued, paused, failed,
+  waiting-for-WiFi (§7.5).
+- **Controls:** Pause / Resume / Cancel / Retry per row; the 3-concurrent cap
+  and auto-pump are backend concerns and are not surfaced as manual controls.
+- **Completed transfers fall off this view** once done — the finished item lives
+  in Downloaded, not here. A transient "just finished" confirmation is fine; a
+  permanent completed-list is not (that's what Downloaded is for).
+- **Empty state** points at the library: "Nothing downloading. Browse your
+  library and tap download to save media for offline."
+
+### 7.5 Navigation & entry points
+
+- Reached via the account menu (§1.2) and, on desktop, the header Downloads
+  link/icon → `/downloads`.
+- `/downloads` opens on **Downloaded** by default; **Transfers** is one tap away
+  and should draw attention (badge/count) only while transfers are active.
+- Initiating a download is unchanged (§7.1): the download button lives on
+  item/album/series detail pages. The Downloads page manages and browses; it is
+  not where you start a download.
+
+### 7.7 Known deviations
+
+Recorded so the gap between this spec and the build is explicit.
+
+- **Downloads is a flat two-tab list today** (Active / Completed), rendering one
+  row per individual transfer with no browsing, grouping, or reuse of the
+  library screens. Completed downloads never collapse into their album/series.
+  *(UR-055)*
+- **No offline-scoped browse entry point exists in the client.** All browsing
+  goes through the hybrid repository, which merges cache **and** server; there is
+  no way to ask for "downloaded content only" as a browse surface. The offline
+  repository supports it (§7.2) but is not reachable independently. *(UR-055,
+  DR-082)*
+- **The "on device" storage summary and per-container remove** are absent from
+  the completed list. *(UR-055, UR-056)*
+- **Per-item disk usage is not displayed anywhere.** Cards and detail pages show
+  no size; there is no device total, no container subtotal, and Remove does not
+  state what it frees. *(UR-056)*
+
 ---
 
 ## 8. Settings & Account Flows
@@ -627,6 +1111,13 @@ flowchart TB
 - **Mobile:** Click three-dot overflow menu → Select "Settings"
 - **Direct:** Navigate to `/settings` route
 
+**Settings apply instantly.** Every control on the Settings page persists the
+moment the user changes it — toggling a switch, picking a level, or releasing a
+slider writes that setting immediately. There is **no "Save" button** and no
+save/dirty state to reason about; leaving the page never risks losing a change.
+Sliders update their live readout while dragging but only persist on release
+(`change`, not each `input` tick) to avoid flooding the backend.
+
 ### 8.2 Logout Flow
 
 ```mermaid
@@ -690,24 +1181,59 @@ flowchart TB
 └─────────────────────────────────────────┘
 ```
 
-### 9.2 Video Playback in Background
+### 9.2 Video Playback in Background (Android — PiP & Background Audio)
+
+Leaving the app while a **local video** is playing does not simply pause it.
+What happens depends on which background behaviour is active. The two are
+**mutually exclusive**, and both apply **only to locally-rendering video** —
+audio-only playback, library/menu browsing, and remote/cast sessions never
+trigger PiP (see decision gate below).
 
 ```mermaid
 flowchart TB
-    VideoPlaying[Video Playing] --> Background{User Action}
+    Leave[User leaves app<br/>Home / gesture / screen lock] --> Gate{Local video surface<br/>actively rendering?<br/>canEnterPip}
 
-    Background -->|Home Button| AutoPause[Automatically Pause]
-    Background -->|Screen Lock| AutoPause
+    Gate -->|No — audio, browsing,<br/>or remote/cast| Normal[App backgrounds normally<br/>audio, if any, continues via<br/>media notification &#40;§9.1&#41;]
 
-    AutoPause --> SaveProgress[Save Progress]
-    SaveProgress --> ShowNotification[Show Paused Notification:<br/>"Tap to Resume"]
+    Gate -->|Yes| Mode{Background mode armed?}
 
-    ShowNotification --> UserReturn{User Returns?}
+    Mode -->|Background-audio toggle ON<br/>UR-040| Handoff[Hand off to native audio service<br/>WebView &lt;video&gt; torn down,<br/>video decode stops, audio continues]
+    Mode -->|Default<br/>UR-041| PiP[Auto-enter Picture-in-Picture<br/>on onUserLeaveHint]
 
-    UserReturn -->|Tap Notification| ResumeVideo[Open App to Video Player]
-    UserReturn -->|Later| KeepPaused[Video Remains Paused]
+    PiP --> PiPWindow[Floating PiP window:<br/>- Video keeps rendering into surface<br/>- WebView hidden<br/>- Play/Pause RemoteAction<br/>  &#40;reflects live player state&#41;]
 
-    ResumeVideo --> AskResume[Resume from Saved Position]
+    PiPWindow --> PiPReturn{User action}
+    PiPReturn -->|Tap window| Restore[Return to full player<br/>WebView restored, surface re-fit]
+    PiPReturn -->|Close window| Stop[Playback stops]
+
+    Handoff --> Foreground[On return to foreground:<br/>resume WebView video at position]
+```
+
+**Key rules:**
+
+- **Video-only gate.** Auto-PiP is guarded by the native `canEnterPip` check
+  (local video surface actively rendering). Audio playback and menu/library
+  browsing background normally; remote/cast sessions render nothing locally, so
+  a PiP window would be an empty box and is refused. *(UR-041, IR-026)*
+- **Only one background behaviour at a time.** The background-audio toggle
+  (UR-040) disarms auto-PiP while it is on, so a video is either handed to the
+  audio service *or* floated in PiP, never both.
+- **PiP controls track the player.** The play/pause RemoteAction in the PiP
+  window reflects the live player state and updates on every playback-state
+  change, not only when the button is pressed. *(DR-053)*
+- **Non-disruptive transition.** ExoPlayer keeps rendering into the same
+  surface across enter/exit, so entering or leaving PiP never interrupts the
+  video; on exit the surface is re-fit to full-screen bounds. *(DR-053)*
+
+**PiP window (Android):**
+```
+        ┌───────────────────┐
+        │                   │
+        │   ▶ video frame   │
+        │                   │
+        │       [⏸]         │  ← play/pause RemoteAction
+        └───────────────────┘
+   sized to the video's aspect ratio
 ```
 
 ---

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jellytau",
-  "version": "0.0.15",
+  "version": "0.1.1",
   "description": "",
   "type": "module",
   "packageManager": "bun@1.3.5",
@@ -17,6 +17,7 @@
     "test:e2e:dev": "wdio run ./wdio.conf.ts --watch",
     "test:all": "./scripts/test-all.sh",
     "test:rust": "./scripts/test-rust.sh",
+    "check:boundary": "bash scripts/check-frontend-boundary.sh",
     "android:build": "./scripts/build-android.sh",
     "android:build:release": "./scripts/build-android.sh release",
     "android:build:clean": "rm -rf node_modules/.vite dist .svelte-kit .next build target src-tauri/target && bun install && bun run build",
@@ -24,11 +25,18 @@
     "android:dev": "./scripts/build-and-deploy.sh",
     "android:check": "./scripts/check-android.sh",
     "android:logs": "./scripts/logcat.sh",
+    "desktop:build:linux": "./scripts/build-desktop-linux.sh",
+    "desktop:build:arch": "./scripts/build-arch.sh",
+    "desktop:build:windows": "./scripts/build-windows-cross.sh",
+    "docker:build:linux": "docker compose run --rm desktop-linux-build",
+    "docker:build:arch": "docker compose run --rm arch-build",
+    "docker:build:windows": "docker compose run --rm windows-cross",
     "clean": "./scripts/clean.sh",
     "tauri": "tauri",
     "traces": "bun run scripts/extract-traces.ts",
     "traces:json": "bun run scripts/extract-traces.ts --format json",
-    "traces:markdown": "bun run scripts/extract-traces.ts --format markdown > docs/traceability.md"
+    "traces:markdown": "bun run scripts/extract-traces.ts --format markdown > docs/traceability.md",
+    "release:notes": "bun run scripts/release-notes.ts"
   },
   "license": "MIT",
   "dependencies": {

packaging/arch/PKGBUILD

@@ -0,0 +1,52 @@
+# Maintainer: Duncan Tourolle <duncan@tourolle.paris>
+#
+# JellyTau — a cross-platform Jellyfin client (Tauri + SvelteKit).
+#
+# This PKGBUILD builds from the local source tree by default (see the `dev`
+# convenience below), which is what scripts/build-arch.sh uses inside the Arch
+# Docker stage. For AUR distribution, replace the `source=()` line with a release
+# tarball/VCS URL and drop the local-copy prepare() step.
+
+pkgname=jellytau
+pkgver=0.0.18
+pkgrel=1
+pkgdesc="A cross-platform Jellyfin client"
+arch=('x86_64')
+url="https://gitea.tourolle.paris/dtourolle/jellytau"
+license=('MIT')
+# Runtime: libmpv for audio, webkit2gtk for the webview + HTML5 transcoded video.
+depends=('webkit2gtk-4.1' 'mpv' 'gtk3' 'libayatana-appindicator')
+makedepends=('rust' 'cargo' 'bun' 'nodejs' 'pkgconf' 'libsoup3')
+options=('!strip' '!lto')
+
+# Populated from the working tree by scripts/build-arch.sh (SRC env var).
+_srcdir="${JELLYTAU_SRC:-$startdir/../..}"
+
+build() {
+  cd "$_srcdir"
+  export CARGO_HOME="${CARGO_HOME:-$srcdir/cargo-home}"
+  bun install --frozen-lockfile || bun install
+  bun run build
+  # Only the raw binary is needed; packaging is done in package() below so we
+  # control the Arch filesystem layout ourselves rather than via tauri-bundler.
+  (cd src-tauri && cargo build --release --locked)
+}
+
+package() {
+  cd "$_srcdir"
+
+  install -Dm755 "src-tauri/target/release/jellytau" \
+    "$pkgdir/usr/bin/jellytau"
+
+  # Desktop entry
+  install -Dm644 "packaging/arch/jellytau.desktop" \
+    "$pkgdir/usr/share/applications/jellytau.desktop"
+
+  # Icons (hicolor)
+  install -Dm644 "src-tauri/icons/32x32.png" \
+    "$pkgdir/usr/share/icons/hicolor/32x32/apps/jellytau.png"
+  install -Dm644 "src-tauri/icons/128x128.png" \
+    "$pkgdir/usr/share/icons/hicolor/128x128/apps/jellytau.png"
+  install -Dm644 "src-tauri/icons/128x128@2x.png" \
+    "$pkgdir/usr/share/icons/hicolor/256x256/apps/jellytau.png"
+}

packaging/arch/jellytau.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=JellyTau
+Comment=A cross-platform Jellyfin client
+Exec=jellytau
+Icon=jellytau
+Terminal=false
+Categories=AudioVideo;Player;Audio;Video;
+StartupWMClass=jellytau

scripts/build-arch.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+# Build an Arch Linux package (.pkg.tar.zst) for JellyTau via makepkg.
+#
+# Tauri's bundler has no pacman target (as of tauri-cli 2.9.x), so we ship a
+# hand-written PKGBUILD in packaging/arch/ and build it with makepkg. This must
+# run on an Arch host / the `arch-build` Docker stage — makepkg is Arch-specific
+# and refuses to run as root, so run it as a non-root user with sudo for deps.
+#
+# Usage (typically inside the arch-build Docker stage as a non-root user):
+#   scripts/build-arch.sh
+#   OUTPUT_DIR=/app/dist scripts/build-arch.sh
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$REPO_ROOT/packaging/arch"
+
+echo "🏛️  Building JellyTau Arch package"
+echo "=================================="
+
+# Point the PKGBUILD at the working tree and give cargo/bun a writable home.
+export JELLYTAU_SRC="$REPO_ROOT"
+export CARGO_HOME="${CARGO_HOME:-$REPO_ROOT/.cargo-arch}"
+
+# -s installs missing deps (needs sudo/root privileges for pacman), -f overwrites.
+makepkg -sf --noconfirm
+
+echo ""
+echo "✅ Built Arch package(s):"
+ls -1 ./*.pkg.tar.zst
+
+if [[ -n "${OUTPUT_DIR:-}" ]]; then
+  mkdir -p "$OUTPUT_DIR"
+  cp -v ./*.pkg.tar.zst "$OUTPUT_DIR/"
+  echo ""
+  echo "📦 Copied Arch package(s) to $OUTPUT_DIR"
+fi

scripts/build-desktop-linux.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+# Build Linux desktop packages (deb + rpm) for JellyTau.
+#
+# Produces bundles under src-tauri/target/release/bundle/{deb,rpm}.
+# Runs on the existing Ubuntu builder image. NOTE: Tauri has no pacman bundle
+# target — the Arch package is built separately with makepkg (scripts/build-arch.sh
+# / Dockerfile.arch). `appimage` is also available if you want a portable bundle.
+#
+# Usage:
+#   scripts/build-desktop-linux.sh                 # deb + rpm
+#   BUNDLES="deb,appimage" scripts/build-desktop-linux.sh # subset / add appimage
+#   OUTPUT_DIR=/app/dist scripts/build-desktop-linux.sh   # copy bundles out
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+BUNDLES="${BUNDLES:-deb,rpm}"
+
+echo "🐧 Building JellyTau Linux desktop packages"
+echo "==========================================="
+echo "Bundles: $BUNDLES"
+echo ""
+
+bun install --frozen-lockfile 2>/dev/null || bun install
+bun run build
+
+# --bundles overrides tauri.conf.json bundle.targets so this script controls
+# exactly which Linux formats are produced (never NSIS here).
+bun run tauri build --bundles "$BUNDLES"
+
+BUNDLE_ROOT="src-tauri/target/release/bundle"
+echo ""
+echo "✅ Built packages:"
+find "$BUNDLE_ROOT" -maxdepth 2 -type f \
+  \( -name '*.deb' -o -name '*.rpm' -o -name '*.AppImage' \) -print
+
+if [[ -n "${OUTPUT_DIR:-}" ]]; then
+  mkdir -p "$OUTPUT_DIR"
+  find "$BUNDLE_ROOT" -maxdepth 2 -type f \
+    \( -name '*.deb' -o -name '*.rpm' -o -name '*.AppImage' \) \
+    -exec cp -v {} "$OUTPUT_DIR/" \;
+  echo ""
+  echo "📦 Copied bundles to $OUTPUT_DIR"
+fi

scripts/build-windows-cross.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+# Cross-compile JellyTau for Windows from Linux, producing an NSIS installer.
+#
+# Uses the OFFICIAL Tauri cross-compile path (https://v2.tauri.app/distribute/
+# windows-installer/): the MSVC target driven by cargo-xwin, which downloads the
+# MSVC CRT/Windows SDK headers and links with lld. This is the target Tauri
+# officially supports for Windows (the mingw/GNU target is not), and unlike GNU
+# it can bundle the NSIS installer from a Linux host.
+#
+# Playback on Windows: video renders via WebView2 and audio via the webview
+# <audio> backend (WebviewAudioBackend) — see docs/build-windows.md.
+#
+# Requirements (present in the Docker windows-cross target / unified builder):
+#   - rustup target x86_64-pc-windows-msvc
+#   - cargo-xwin           (cargo install --locked cargo-xwin)
+#   - lld, llvm            (linker + llvm-lib used by cargo-xwin)
+#   - nsis (makensis)      (installer generator)
+#
+# Usage:
+#   scripts/build-windows-cross.sh                    # exe + NSIS installer
+#   WIN_BUNDLES=none scripts/build-windows-cross.sh   # exe only, skip bundling
+#   OUTPUT_DIR=/app/dist scripts/build-windows-cross.sh
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+TARGET="x86_64-pc-windows-msvc"
+WIN_BUNDLES="${WIN_BUNDLES:-nsis}"
+
+echo "🪟 Cross-compiling JellyTau for Windows ($TARGET, via cargo-xwin)"
+echo "================================================================"
+echo "Video plays via WebView2; audio via the webview <audio> backend."
+echo "Bundles: $WIN_BUNDLES"
+echo ""
+
+bun install --frozen-lockfile 2>/dev/null || bun install
+bun run build
+
+# --runner cargo-xwin + the MSVC target is what makes the Tauri CLI treat this as
+# a real Windows build and enable the nsis/msi bundlers on a Linux host.
+#
+# IMPORTANT: do NOT pass `--bundles nsis` here. tauri-cli 2.9.x validates the
+# `--bundles` flag against a static clap enum gated by the HOST OS (Linux allows
+# only deb/rpm/appimage) *before* it considers --target/--runner, so `--bundles
+# nsis` is rejected at arg-parse time. Instead the Windows bundle targets come
+# from tauri.conf.json (bundle.targets includes "nsis"), which is not subject to
+# that CLI validation — the bundler then picks nsis once it knows the target is
+# Windows.
+if [[ "$WIN_BUNDLES" == "none" ]]; then
+  bun run tauri build --runner cargo-xwin --target "$TARGET" --no-bundle
+else
+  bun run tauri build --runner cargo-xwin --target "$TARGET"
+fi
+
+BIN_DIR="src-tauri/target/$TARGET/release"
+echo ""
+echo "✅ Built Windows artifacts:"
+find "$BIN_DIR" -maxdepth 1 -name '*.exe' -print
+find "$BIN_DIR/bundle" -type f \( -name '*.exe' -o -name '*.msi' \) -print 2>/dev/null || true
+
+if [[ -n "${OUTPUT_DIR:-}" ]]; then
+  mkdir -p "$OUTPUT_DIR"
+  find "$BIN_DIR" -maxdepth 1 -name 'jellytau.exe' -exec cp -v {} "$OUTPUT_DIR/" \;
+  # NSIS setup installers land in bundle/nsis/*-setup.exe; MSI in bundle/msi/*.msi.
+  find "$BIN_DIR/bundle" -type f \( -name '*-setup.exe' -o -name '*.msi' \) \
+    -exec cp -v {} "$OUTPUT_DIR/" \; 2>/dev/null || true
+  echo ""
+  echo "📦 Copied Windows artifacts to $OUTPUT_DIR"
+fi

scripts/check-frontend-boundary.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+# Boundary tripwire: flag domain-taxonomy leaks in the Svelte frontend.
+#
+# The project rule (CLAUDE.md, docs/architecture/02-svelte-frontend.md) is that
+# the frontend is presentation-only and the Rust backend owns domain logic —
+# including Jellyfin's item-type *taxonomy* (what the category "Music" means as a
+# set of item types). See docs/specs/scoped-search-boundary.md for the incident
+# that motivated this check.
+#
+# ⚠️ This is a TRIPWIRE, NOT A PROOF. A grep cannot distinguish taxonomy-as-policy
+# (a leak) from taxonomy-as-display (legitimate: "is this a music card?"). It
+# targets the one machine-detectable signature of the leak class — a *query* that
+# names a multi-type category — and defers everything subtler to the human
+# spec-review checklist (docs/specs/SPEC-REVIEW-CHECKLIST.md). A clean run here
+# does not mean the boundary is respected; it means the crudest violation isn't
+# present.
+#
+# What it flags: an `includeItemTypes: [ ... , ... ]` array literal with two or
+# more types — i.e. the frontend deciding that a *category* maps to a *set* of
+# Jellyfin types, which is domain knowledge the backend should own. Single-type
+# query arrays (`includeItemTypes: ["Movie"]`) are a page saying "I show movies"
+# and are allowed. Type *inspection* (`item.type === "Audio"`) is display logic
+# and is not matched.
+#
+# Escaping a genuine exception: add the file+reason to the ALLOWLIST below.
+
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+# Files permitted to contain a multi-type includeItemTypes query, with the reason.
+# Keep this SHORT. A growing allowlist means the boundary is eroding — that is a
+# signal to push taxonomy into Rust, not to keep appending here.
+ALLOWLIST=(
+  # "Things a person appeared in" is arguably taxonomy, but it is a fixed
+  # two-type filmography query with no category-configuration behind it. Tracked
+  # as acceptable pending any person-scope work; revisit if it grows.
+  "src/lib/components/library/PersonDetailView.svelte"
+)
+
+is_allowed() {
+  local file="$1"
+  for allowed in "${ALLOWLIST[@]}"; do
+    [[ "$file" == "$allowed" ]] && return 0
+  done
+  return 1
+}
+
+# Multi-element includeItemTypes array: `includeItemTypes: [ <x> , <y> ... ]`.
+# The comma inside the brackets is what makes it multi-type.
+PATTERN='includeItemTypes:[[:space:]]*\[[^]]*,[^]]*\]'
+
+echo "🔎 Checking frontend for domain-taxonomy leaks (multi-type query arrays)…"
+
+# Collect hits, excluding tests and the allowlist.
+violations=""
+while IFS= read -r line; do
+  [[ -z "$line" ]] && continue
+  file="${line%%:*}"
+  case "$file" in
+    *.test.*) continue ;;
+  esac
+  if is_allowed "$file"; then
+    echo "  ⏭️  allowlisted: $line"
+    continue
+  fi
+  violations+="$line"$'\n'
+done < <(grep -rInE "$PATTERN" src/ 2>/dev/null || true)
+
+if [[ -n "$violations" ]]; then
+  echo ""
+  echo "❌ Frontend boundary violation: a multi-type includeItemTypes query defines"
+  echo "   a category in the presentation layer. That taxonomy belongs in Rust —"
+  echo "   send an opaque scope and let the backend expand it to item types."
+  echo "   See docs/specs/scoped-search-boundary.md and CLAUDE.md."
+  echo ""
+  echo "$violations" | sed 's/^/   /'
+  echo "   If this is a genuine exception, add the file + reason to ALLOWLIST in"
+  echo "   scripts/check-frontend-boundary.sh — but prefer moving it to Rust."
+  exit 1
+fi
+
+echo "✅ No multi-type taxonomy queries in the frontend."
+echo "   (Reminder: this is a tripwire, not a proof — the spec-review checklist is"
+echo "    the real gate for subtler leaks.)"

scripts/release-notes.ts

@@ -0,0 +1,137 @@
+#!/usr/bin/env bun
+/**
+ * release-notes.ts — turn a commit range into capability-level release notes
+ * using the TRACES graph instead of raw commit subjects.
+ *
+ * Usage:
+ *   bun run scripts/release-notes.ts [<range>]
+ *   bun run scripts/release-notes.ts v0.0.15..HEAD
+ *
+ * With no argument it uses <latest tag>..HEAD (or the whole history if untagged).
+ *
+ * How it works:
+ *   1. `git diff --name-only <range>` → files the range changed.
+ *   2. Read each changed file's `TRACES:` comments → requirement IDs.
+ *   3. Resolve IDs to descriptions from docs/requirements.md.
+ *   4. Group: UR → Features, DR/IR → Improvements. Deduped, so many commits
+ *      touching one requirement collapse to one line.
+ *
+ * This is a drafting aid for docs/release-checklist.md — review the output,
+ * it does not invent descriptions for untraced changes (those are listed
+ * separately so nothing is silently dropped).
+ */
+
+import { execSync } from "node:child_process";
+import { readFileSync, existsSync } from "node:fs";
+
+const TRACE_RE = /TRACES:\s*([^\n*]+)/g;
+const ID_RE = /\b(UR|IR|DR|JA|UT|IT)-\d+\b/g;
+const REQ_ROW_RE = /^\|\s*((?:UR|IR|DR|JA)-\d+)\s*\|\s*([^|]+?)\s*\|/;
+
+function sh(cmd: string): string {
+  return execSync(cmd, { encoding: "utf8" }).trim();
+}
+
+function defaultRange(): string {
+  try {
+    const tag = sh("git describe --tags --abbrev=0");
+    return `${tag}..HEAD`;
+  } catch {
+    return ""; // no tags: fall through to whole-history diff
+  }
+}
+
+/** Map requirement ID → human description, parsed from docs/requirements.md. */
+function loadRequirementDescriptions(): Map<string, string> {
+  const map = new Map<string, string>();
+  const text = readFileSync("docs/requirements.md", "utf8");
+  for (const line of text.split("\n")) {
+    const m = line.match(REQ_ROW_RE);
+    // First definition wins: the descriptive tables come before the later
+    // cross-reference tables, whose cells hold linked IDs (or "-"), not prose.
+    if (m && !map.has(m[1])) map.set(m[1], m[2].trim());
+  }
+  return map;
+}
+
+function changedFiles(range: string): string[] {
+  const cmd = range
+    ? `git diff --name-only ${range}`
+    : "git ls-files"; // untagged repo: describe everything currently traced
+  return sh(cmd)
+    .split("\n")
+    .filter((f) => f && existsSync(f));
+}
+
+/** Collect requirement IDs referenced by TRACES comments in the given files. */
+function idsFromFiles(files: string[]): Set<string> {
+  const ids = new Set<string>();
+  for (const file of files) {
+    let content: string;
+    try {
+      content = readFileSync(file, "utf8");
+    } catch {
+      continue;
+    }
+    for (const trace of content.matchAll(TRACE_RE)) {
+      for (const id of trace[1].matchAll(ID_RE)) ids.add(id[0]);
+    }
+  }
+  return ids;
+}
+
+function main() {
+  const range = process.argv[2] ?? defaultRange();
+  const descriptions = loadRequirementDescriptions();
+  const files = changedFiles(range);
+  const ids = idsFromFiles(files);
+
+  const features: string[] = []; // UR
+  const improvements: string[] = []; // DR / IR
+  const unknown: string[] = []; // traced but not in requirements.md
+
+  for (const id of [...ids].sort()) {
+    const desc = descriptions.get(id);
+    if (id.startsWith("UT") || id.startsWith("IT")) continue; // tests aren't notes
+    if (!desc) {
+      if (!id.startsWith("UT") && !id.startsWith("IT")) unknown.push(id);
+      continue;
+    }
+    const line = `- ${desc} (${id})`;
+    if (id.startsWith("UR")) features.push(line);
+    else improvements.push(line);
+  }
+
+  const header = range || "(entire history — no tags found)";
+  const out: string[] = [`## Release notes — ${header}`, ""];
+
+  if (features.length) out.push("### ✨ Features", ...features, "");
+  if (improvements.length) out.push("### 🚀 Improvements", ...improvements, "");
+  if (unknown.length)
+    out.push(
+      "### ⚠️ Traced IDs missing from requirements.md",
+      ...unknown.map((id) => `- ${id}`),
+      "",
+    );
+
+  const untraced = files.filter((f) => {
+    try {
+      return !/TRACES:/.test(readFileSync(f, "utf8"));
+    } catch {
+      return false;
+    }
+  });
+  if (untraced.length)
+    out.push(
+      `### 📝 Changed files without TRACES (${untraced.length}) — review manually`,
+      ...untraced.map((f) => `- ${f}`),
+      "",
+    );
+
+  if (!features.length && !improvements.length)
+    out.push("_No traced requirements in this range._", "");
+
+  console.log(out.join("\n"));
+}
+
+main();

scripts/sync-android-sources.sh

@@ -41,6 +41,19 @@ if [ -f "$APP_GRADLE_SRC" ]; then
     echo "  Copied: app/build.gradle.kts"
 fi
 
+# AndroidManifest.xml. `tauri android init` regenerates gen/android from
+# tauri.conf.json and would drop our hand-maintained entries (media playback
+# service + permissions, hardware acceleration, picture-in-picture attributes
+# on MainActivity), so this tracked copy is the source of truth and must be
+# restored after a regen. Gradle reads ONLY the gen/ copy - there is no
+# manifest-merger hook here, so this must be the complete manifest.
+MANIFEST_SRC="$PROJECT_ROOT/src-tauri/android/src/main/AndroidManifest.xml"
+MANIFEST_DST="$PROJECT_ROOT/src-tauri/gen/android/app/src/main/AndroidManifest.xml"
+if [ -f "$MANIFEST_SRC" ]; then
+    cp "$MANIFEST_SRC" "$MANIFEST_DST"
+    echo "  Copied: app/src/main/AndroidManifest.xml"
+fi
+
 # Custom ProGuard/R8 keep rules. Required for minified release builds:
 # the player/ and security/ Kotlin classes are loaded by name via JNI from
 # Rust, so R8 can't see the references and would strip them without this.
@@ -65,6 +78,15 @@ if [ -d "$RES_SRC" ]; then
         cp "$dir"/* "$RES_DST/$name/"
         echo "  Copied res: $name"
     done
+
+    # values/ (themes.xml): status-bar styling that `tauri android init` does
+    # not generate. Previously this directory was tracked but never copied, so
+    # the theme customizations below never reached a build.
+    if [ -d "$RES_SRC/values" ]; then
+        mkdir -p "$RES_DST/values"
+        cp "$RES_SRC"/values/*.xml "$RES_DST/values/"
+        echo "  Copied res: values"
+    fi
     # We ship only the color adaptive icon (background + foreground). Drop any
     # monochrome layer Tauri may generate: the themed-icon monochrome doesn't
     # render well, and our adaptive-icon xml no longer references it, so a stray

src-tauri/Cargo.lock

@@ -1994,7 +1994,7 @@ dependencies = [
 
 [[package]]
 name = "jellytau"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "aes-gcm",
  "async-trait",

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "jellytau"
-version = "0.1.0"
+version = "0.1.1"
 description = "A Tauri App"
 authors = ["you"]
 edition = "2021"

src-tauri/android/app/proguard-jellytau.pro

@@ -9,6 +9,16 @@
 -keep class com.dtourolle.jellytau.player.** { *; }
 -keep class com.dtourolle.jellytau.security.** { *; }
 
+# Picture-in-picture is driven from the WebView through an
+# @JavascriptInterface bridge, so the only references to these methods live
+# in JavaScript. R8 sees them as unused and would strip them, silently
+# breaking the PiP button in release builds only.
+-keep class com.dtourolle.jellytau.PictureInPictureManager { *; }
+-keep class com.dtourolle.jellytau.VideoOverlayManager { *; }
+-keepclassmembers class * {
+    @android.webkit.JavascriptInterface <methods>;
+}
+
 # Media3 / ExoPlayer is accessed reflectively in places; keep it intact.
 -keep class androidx.media3.** { *; }
 -dontwarn androidx.media3.**

src-tauri/android/build.gradle.kts

@@ -1,39 +0,0 @@
-plugins {
-    id("com.android.library")
-    id("org.jetbrains.kotlin.android")
-}
-
-android {
-    namespace = "com.dtourolle.jellytau.player"
-    compileSdk = 36
-
-    defaultConfig {
-        minSdk = 24
-    }
-
-    buildTypes {
-        getByName("debug") {
-        }
-        getByName("release") {
-            isMinifyEnabled = false
-        }
-    }
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = "1.8"
-    }
-}
-
-dependencies {
-    implementation("androidx.media3:media3-exoplayer:1.5.1")
-    implementation("androidx.media3:media3-exoplayer-hls:1.5.1")
-    implementation("androidx.media3:media3-common:1.5.1")
-    implementation("androidx.media3:media3-session:1.5.1")
-    implementation("androidx.media:media:1.7.0") // For MediaSessionCompat and VolumeProviderCompat
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.8.1")
-}

src-tauri/android/src/main/AndroidManifest.xml

@@ -1,5 +1,69 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  Authoritative AndroidManifest for JellyTau.
+
+  NOTE: this is NOT a manifest-merger fragment. Gradle only ever reads
+  gen/android/app/src/main/AndroidManifest.xml, and `tauri android init`
+  regenerates that file from tauri.conf.json - dropping everything below.
+  scripts/sync-android-sources.sh copies this file over the generated one,
+  so this is the full manifest and the single source of truth.
+
+  (An earlier version of this file was a partial <application> fragment on the
+  assumption that Tauri merged it. It did not: the hardwareAccelerated flag it
+  declared never reached any built APK. It is folded in properly below.)
+-->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- Enable hardware acceleration for video playback performance -->
-    <application android:hardwareAccelerated="true" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <!-- Required to read NetworkCapabilities for the WiFi-only download gate (UR-053) -->
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
+    <!-- AndroidTV support -->
+    <uses-feature android:name="android.software.leanback" android:required="false" />
+
+    <application
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/Theme.jellytau"
+        android:hardwareAccelerated="true"
+        android:usesCleartextTraffic="${usesCleartextTraffic}">
+        <activity
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode|density"
+            android:launchMode="singleTask"
+            android:label="@string/main_activity_title"
+            android:name=".MainActivity"
+            android:exported="true"
+            android:supportsPictureInPicture="true"
+            android:resizeableActivity="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+                <!-- AndroidTV support -->
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <provider
+          android:name="androidx.core.content.FileProvider"
+          android:authorities="${applicationId}.fileprovider"
+          android:exported="false"
+          android:grantUriPermissions="true">
+          <meta-data
+            android:name="android.support.FILE_PROVIDER_PATHS"
+            android:resource="@xml/file_paths" />
+        </provider>
+
+        <!-- Media playback service for lockscreen controls -->
+        <service
+            android:name="com.dtourolle.jellytau.player.JellyTauPlaybackService"
+            android:foregroundServiceType="mediaPlayback"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="androidx.media3.session.MediaSessionService" />
+            </intent-filter>
+        </service>
+    </application>
 </manifest>

src-tauri/android/src/main/java/com/dtourolle/jellytau/MainActivity.kt

@@ -22,6 +22,34 @@ class MainActivity : TauriActivity() {
   private var audioFocusRequest: AudioFocusRequest? = null
   private val audioManager by lazy { getSystemService(Context.AUDIO_SERVICE) as AudioManager }
 
+  /**
+   * Coarse override for whether backgrounding the app should auto-enter PiP.
+   *
+   * This is NOT what excludes audio/browsing/cast from PiP — that is the
+   * PictureInPictureManager.canEnterPip guard, which requires a local video
+   * surface to be actively rendering and is re-checked in onUserLeaveHint. This
+   * flag is only toggled by the background-audio feature (via
+   * AndroidPictureInPicture.setAutoEnterEnabled) so background-audio mode and
+   * auto-PiP stay mutually exclusive.
+   */
+  @Volatile
+  private var autoEnterPipEnabled = true
+
+  /**
+   * Whether the user armed background-audio mode on the current video (UR-040).
+   * When true, leaving the app hands audio off to the native ExoPlayer audio
+   * service (frontend-driven) instead of entering PiP, and video decode stops.
+   * The frontend sets this via AndroidBackgroundAudio.setEnabled.
+   */
+  @Volatile
+  private var backgroundAudioEnabled = false
+
+  /**
+   * The WebView carrying the Svelte UI, cached once found so lifecycle overrides
+   * can dispatch DOM events into it (native → frontend signalling).
+   */
+  private var mediaWebView: WebView? = null
+
   override fun onCreate(savedInstanceState: Bundle?) {
     enableEdgeToEdge()
     super.onCreate(savedInstanceState)
@@ -37,6 +65,80 @@ class MainActivity : TauriActivity() {
     configureWebViewForMedia()
   }
 
+  /**
+   * Called when the user leaves the app via Home or the gesture equivalent
+   * (but NOT via Back). This is the standard hook for auto-entering PiP so
+   * video keeps playing in a floating window instead of being backgrounded.
+   *
+   * TRACES: UR-041 | IR-026 | DR-053
+   */
+  override fun onUserLeaveHint() {
+    super.onUserLeaveHint()
+    // Never enter PiP while background-audio mode is armed — the two are mutually
+    // exclusive (the handoff runs from onStop instead).
+    if (autoEnterPipEnabled && !backgroundAudioEnabled &&
+        PictureInPictureManager.canEnterPip(this)) {
+      android.util.Log.d("MainActivity", "User leaving with video active - entering PiP")
+      PictureInPictureManager.enterPip(this)
+    }
+  }
+
+  /**
+   * The app is no longer visible (Home, app switch, or screen lock). When
+   * background-audio mode is armed, tell the frontend to hand video playback off
+   * to the native audio service. onStop (rather than onUserLeaveHint) is used
+   * because it fires on screen-lock too, which is the primary use case (UR-040).
+   *
+   * TRACES: UR-040 | IR-025
+   */
+  override fun onStop() {
+    super.onStop()
+    if (backgroundAudioEnabled) {
+      dispatchWebEvent("jellytau-background")
+    }
+  }
+
+  /** The app is visible again — tell the frontend to resume WebView video. */
+  override fun onStart() {
+    super.onStart()
+    if (backgroundAudioEnabled) {
+      dispatchWebEvent("jellytau-foreground")
+    }
+  }
+
+  /**
+   * Dispatch a DOM CustomEvent into the WebView (native → frontend). Mirrors the
+   * evaluateJavascript pattern already used to unmute video elements. Posted to
+   * the WebView thread; safe no-op if the WebView isn't found yet.
+   */
+  private fun dispatchWebEvent(name: String) {
+    val webView = mediaWebView ?: run {
+      android.util.Log.w("MainActivity", "dispatchWebEvent('$name'): no WebView")
+      return
+    }
+    webView.post {
+      webView.evaluateJavascript(
+        "window.dispatchEvent(new CustomEvent('$name'));",
+        null
+      )
+      android.util.Log.d("MainActivity", "Dispatched web event: $name")
+    }
+  }
+
+  override fun onDestroy() {
+    NetworkTypeMonitor.stopWatching(this)
+    super.onDestroy()
+  }
+
+  override fun onPictureInPictureModeChanged(
+    isInPictureInPictureMode: Boolean,
+    newConfig: android.content.res.Configuration
+  ) {
+    super.onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig)
+    android.util.Log.d("MainActivity", "PiP mode changed: $isInPictureInPictureMode")
+    PictureInPictureManager.onPipModeChanged(this, isInPictureInPictureMode)
+  }
+
   private fun configureWebViewForMedia() {
     try {
       val webView = findWebView(window.decorView)
@@ -55,6 +157,7 @@ class MainActivity : TauriActivity() {
       }
 
       android.util.Log.d("MainActivity", "WebView found! Configuring settings...")
+      mediaWebView = webView
 
       // Add JavaScript interface for audio focus control
       webView.addJavascriptInterface(object : Any() {
@@ -70,6 +173,81 @@ class MainActivity : TauriActivity() {
       }, "AndroidAudioFocus")
       android.util.Log.d("MainActivity", "JavaScript interface 'AndroidAudioFocus' added")
 
+      // Add JavaScript interface for picture-in-picture control.
+      // enterPip/canEnterPip must run on the main thread; @JavascriptInterface
+      // methods are invoked on a WebView binder thread.
+      webView.addJavascriptInterface(object : Any() {
+        @JavascriptInterface
+        fun enterPip() {
+          handler.post { PictureInPictureManager.enterPip(this@MainActivity) }
+        }
+
+        /** Whether the PiP button should be offered in the player UI at all. */
+        @JavascriptInterface
+        fun isSupported(): Boolean {
+          return PictureInPictureManager.isPipSupported(this@MainActivity)
+        }
+
+        /** Whether entering PiP would work right now (local video playing). */
+        @JavascriptInterface
+        fun canEnterPip(): Boolean {
+          return PictureInPictureManager.canEnterPip(this@MainActivity)
+        }
+
+        /** Let the frontend opt out of auto-PiP (e.g. while casting). */
+        @JavascriptInterface
+        fun setAutoEnterEnabled(enabled: Boolean) {
+          autoEnterPipEnabled = enabled
+        }
+      }, "AndroidPictureInPicture")
+      android.util.Log.d("MainActivity", "JavaScript interface 'AndroidPictureInPicture' added")
+
+      // Add JavaScript interface for background-audio mode (UR-040). The frontend
+      // arms/disarms it via the player toggle; the Activity uses the flag in its
+      // lifecycle overrides to decide between the audio handoff and PiP.
+      webView.addJavascriptInterface(object : Any() {
+        /** Frontend arms/disarms background-audio mode for the current video. */
+        @JavascriptInterface
+        fun setEnabled(enabled: Boolean) {
+          backgroundAudioEnabled = enabled
+          android.util.Log.d("MainActivity", "backgroundAudioEnabled = $enabled")
+        }
+
+        /** Whether background audio is available on this device (needs PiP-era APIs unnecessary; audio service always present on Android). */
+        @JavascriptInterface
+        fun isSupported(): Boolean = true
+      }, "AndroidBackgroundAudio")
+      android.util.Log.d("MainActivity", "JavaScript interface 'AndroidBackgroundAudio' added")
+
+      // Network transport reporting for the WiFi-only download gate (UR-053).
+      // The frontend polls these on demand and re-pumps the download queue when
+      // the 'jellytau-network-changed' event fires.
+      webView.addJavascriptInterface(object : Any() {
+        /** Active transport: wifi | ethernet | cellular | other | none | unknown. */
+        @JavascriptInterface
+        fun currentType(): String = NetworkTypeMonitor.currentType(this@MainActivity)
+
+        /** Whether the active network is unmetered. */
+        @JavascriptInterface
+        fun isUnmetered(): Boolean = NetworkTypeMonitor.isUnmetered(this@MainActivity)
+
+        /** Whether downloads may run given the wifi-only preference. */
+        @JavascriptInterface
+        fun isAcceptable(wifiOnly: Boolean): Boolean =
+          NetworkTypeMonitor.isAcceptable(this@MainActivity, wifiOnly)
+
+        /** Whether native network detection is available at all (false on non-Android). */
+        @JavascriptInterface
+        fun isSupported(): Boolean = true
+      }, "AndroidNetworkType")
+      android.util.Log.d("MainActivity", "JavaScript interface 'AndroidNetworkType' added")
+
+      // Push network changes into the WebView so a queue blocked on "waiting for
+      // WiFi" resumes the moment an acceptable network appears.
+      NetworkTypeMonitor.startWatching(this) {
+        dispatchWebEvent("jellytau-network-changed")
+      }
+
       // Set WebChromeClient to handle video playback and audio focus
       webView.webChromeClient = object : WebChromeClient() {
         override fun onShowCustomView(view: View?, callback: CustomViewCallback?) {
@@ -93,7 +271,6 @@ class MainActivity : TauriActivity() {
         domStorageEnabled = true
         allowFileAccess = true
         allowContentAccess = true
-        setRenderPriority(WebSettings.RenderPriority.HIGH)
         mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
 
         android.util.Log.d("MainActivity", "WebView fully configured for media playback")

src-tauri/android/src/main/java/com/dtourolle/jellytau/NetworkTypeMonitor.kt

@@ -0,0 +1,152 @@
+package com.dtourolle.jellytau
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+
+/**
+ * Reports the *kind* of network the device is on, so downloads can be gated on
+ * "unmetered only" (the WiFi-only setting).
+ *
+ * This is deliberately separate from the Rust-side ConnectivityMonitor, which
+ * answers a different question: whether the Jellyfin *server* is reachable,
+ * derived from real request outcomes. Reachability and transport type are
+ * orthogonal — you can be on WiFi with a dead server, or on cellular with a
+ * perfectly reachable one.
+ *
+ * Requires ACCESS_NETWORK_STATE; without it getNetworkCapabilities returns null
+ * and we report UNKNOWN (which the gate treats as "not acceptable" when
+ * wifi-only is on, failing closed rather than burning mobile data).
+ *
+ * TRACES: UR-053 | DR-074
+ */
+object NetworkTypeMonitor {
+  private const val TAG = "NetworkTypeMonitor"
+
+  /** Transport classification, mirrored by the Rust `NetworkType` enum. */
+  const val TYPE_NONE = "none"
+  const val TYPE_WIFI = "wifi"
+  const val TYPE_ETHERNET = "ethernet"
+  const val TYPE_CELLULAR = "cellular"
+  const val TYPE_OTHER = "other"
+  const val TYPE_UNKNOWN = "unknown"
+
+  private var callback: ConnectivityManager.NetworkCallback? = null
+
+  /** Invoked on any network change; set by [startWatching]. */
+  @Volatile
+  private var onChange: (() -> Unit)? = null
+
+  private fun connectivityManager(context: Context): ConnectivityManager? =
+    context.getSystemService(Context.CONNECTIVITY_SERVICE) as? ConnectivityManager
+
+  /**
+   * Current transport type of the active network.
+   *
+   * Returns UNKNOWN (not NONE) when capabilities can't be read, so callers can
+   * distinguish "definitely offline" from "couldn't tell".
+   */
+  fun currentType(context: Context): String {
+    val cm = connectivityManager(context) ?: return TYPE_UNKNOWN
+    val network = cm.activeNetwork ?: return TYPE_NONE
+    val caps = cm.getNetworkCapabilities(network) ?: return TYPE_UNKNOWN
+
+    return when {
+      caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> TYPE_WIFI
+      caps.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> TYPE_ETHERNET
+      caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> TYPE_CELLULAR
+      else -> TYPE_OTHER
+    }
+  }
+
+  /**
+   * Whether the active network is unmetered.
+   *
+   * This is the bit that actually matters for the WiFi-only gate: a phone
+   * hotspot reports TRANSPORT_WIFI but is metered, and is backed by exactly the
+   * cellular data the setting exists to protect. Checking NOT_METERED rather
+   * than the transport alone means tethering doesn't quietly burn a data plan.
+   */
+  fun isUnmetered(context: Context): Boolean {
+    val cm = connectivityManager(context) ?: return false
+    val network = cm.activeNetwork ?: return false
+    val caps = cm.getNetworkCapabilities(network) ?: return false
+    return caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)
+  }
+
+  /**
+   * Whether downloads may run right now given the wifi-only preference.
+   *
+   * Ethernet counts as acceptable (it is unmetered in practice and is what
+   * Android TV devices use). Cellular never does. When wifi-only is off this is
+   * always true — the gate simply isn't engaged.
+   */
+  fun isAcceptable(context: Context, wifiOnly: Boolean): Boolean {
+    if (!wifiOnly) return true
+    val type = currentType(context)
+    if (type == TYPE_CELLULAR || type == TYPE_NONE || type == TYPE_UNKNOWN) return false
+    // WiFi/Ethernet/other: require unmetered so metered hotspots are excluded.
+    return isUnmetered(context)
+  }
+
+  /**
+   * Register a callback that fires whenever the network changes, so a blocked
+   * download queue can be re-pumped the moment an acceptable network appears.
+   * Without this the queue would stall until some unrelated event pumped it.
+   *
+   * Idempotent: a second call replaces the previous callback.
+   */
+  fun startWatching(context: Context, onNetworkChanged: () -> Unit) {
+    val cm = connectivityManager(context) ?: run {
+      android.util.Log.w(TAG, "No ConnectivityManager; network changes won't be observed")
+      return
+    }
+
+    stopWatching(context)
+    onChange = onNetworkChanged
+
+    val request = NetworkRequest.Builder()
+      .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+      .build()
+
+    val cb = object : ConnectivityManager.NetworkCallback() {
+      override fun onAvailable(network: Network) {
+        android.util.Log.d(TAG, "Network available")
+        onChange?.invoke()
+      }
+
+      override fun onLost(network: Network) {
+        android.util.Log.d(TAG, "Network lost")
+        onChange?.invoke()
+      }
+
+      override fun onCapabilitiesChanged(network: Network, caps: NetworkCapabilities) {
+        // Fires when e.g. metered-ness flips without the network itself changing.
+        onChange?.invoke()
+      }
+    }
+
+    try {
+      cm.registerNetworkCallback(request, cb)
+      callback = cb
+      android.util.Log.d(TAG, "Network callback registered")
+    } catch (e: Exception) {
+      android.util.Log.e(TAG, "Failed to register network callback", e)
+    }
+  }
+
+  /** Unregister the network callback, if one is active. */
+  fun stopWatching(context: Context) {
+    val cb = callback ?: return
+    val cm = connectivityManager(context)
+    try {
+      cm?.unregisterNetworkCallback(cb)
+    } catch (e: Exception) {
+      android.util.Log.w(TAG, "Failed to unregister network callback", e)
+    }
+    callback = null
+    onChange = null
+  }
+}

src-tauri/android/src/main/java/com/dtourolle/jellytau/PictureInPictureManager.kt

@@ -0,0 +1,312 @@
+package com.dtourolle.jellytau
+
+import android.app.Activity
+import android.app.PictureInPictureParams
+import android.app.RemoteAction
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.graphics.drawable.Icon
+import android.os.Build
+import android.util.Rational
+import android.view.ViewGroup
+import android.webkit.WebView
+import androidx.annotation.RequiresApi
+import com.dtourolle.jellytau.player.JellyTauPlayer
+
+/**
+ * Drives Android picture-in-picture for native (ExoPlayer) video playback.
+ *
+ * TRACES: UR-041 | IR-026 | DR-053
+ *
+ * PiP shrinks the whole Activity into a floating window, so the only thing that
+ * should remain visible is the video SurfaceView that [VideoOverlayManager]
+ * attached at the bottom of the z-order. The WebView carrying the Svelte UI is
+ * hidden for the duration - it is opaque and sits *above* the surface, so
+ * leaving it visible would occlude the video entirely.
+ *
+ * Playback itself is untouched: ExoPlayer keeps rendering into the same surface
+ * across the transition, so entering and leaving PiP never interrupts the video.
+ */
+object PictureInPictureManager {
+
+    private const val TAG = "PictureInPictureManager"
+
+    /** Action for the play/pause RemoteAction shown inside the PiP window. */
+    private const val ACTION_MEDIA_CONTROL = "com.dtourolle.jellytau.PIP_MEDIA_CONTROL"
+    private const val EXTRA_CONTROL_TYPE = "control_type"
+    private const val CONTROL_PLAY = 1
+    private const val CONTROL_PAUSE = 2
+
+    /** Request codes must differ per action or the PendingIntents collapse into one. */
+    private const val REQUEST_PLAY = 101
+    private const val REQUEST_PAUSE = 102
+
+    private var receiver: BroadcastReceiver? = null
+    private var hiddenWebView: WebView? = null
+
+    /**
+     * Whether this device/OS can do PiP at all. Android 8.0 introduced the API,
+     * and the user (or device manufacturer) can disable the feature per-app.
+     */
+    fun isPipSupported(activity: Activity): Boolean {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return false
+        return activity.packageManager.hasSystemFeature(
+            android.content.pm.PackageManager.FEATURE_PICTURE_IN_PICTURE
+        )
+    }
+
+    /**
+     * Whether entering PiP right now makes sense: a native video must actually
+     * be playing locally. Audio-only playback and remote/cast sessions render
+     * nothing on this device, so a PiP window would be an empty black box.
+     */
+    fun canEnterPip(activity: Activity): Boolean {
+        if (!isPipSupported(activity)) return false
+        return try {
+            val player = JellyTauPlayer.getInstance()
+            player.isPlayingVideo() &&
+                player.getSurfaceView() != null &&
+                VideoOverlayManager.isVideoSurfaceAttached()
+        } catch (e: Exception) {
+            android.util.Log.w(TAG, "canEnterPip check failed", e)
+            false
+        }
+    }
+
+    /**
+     * Enter picture-in-picture, sizing the window to the video's aspect ratio.
+     *
+     * @return true if the system accepted the transition.
+     */
+    fun enterPip(activity: Activity): Boolean {
+        if (!canEnterPip(activity)) {
+            android.util.Log.d(TAG, "Not entering PiP: no local video playing")
+            return false
+        }
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return false
+
+        return try {
+            val params = buildParams(activity)
+            val entered = activity.enterPictureInPictureMode(params)
+            android.util.Log.d(TAG, "enterPictureInPictureMode returned $entered")
+            entered
+        } catch (e: Exception) {
+            // IllegalStateException here means PiP is disallowed (e.g. the user
+            // turned it off in system settings). Never crash over it.
+            android.util.Log.e(TAG, "Failed to enter PiP", e)
+            false
+        }
+    }
+
+    /**
+     * Build PiP params: aspect ratio from the current video, plus a play/pause
+     * RemoteAction reflecting the live playback state.
+     */
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun buildParams(activity: Activity): PictureInPictureParams {
+        val builder = PictureInPictureParams.Builder()
+
+        aspectRatioFor()?.let { builder.setAspectRatio(it) }
+        builder.setActions(listOf(buildPlayPauseAction(activity)))
+
+        return builder.build()
+    }
+
+    /**
+     * The video's aspect ratio, clamped to the range Android accepts.
+     *
+     * The platform rejects ratios outside roughly 1:2.39 - 2.39:1 with an
+     * IllegalArgumentException, which would otherwise take down the Activity on
+     * unusually tall or wide content.
+     */
+    private fun aspectRatioFor(): Rational? {
+        val player = try {
+            JellyTauPlayer.getInstance()
+        } catch (e: Exception) {
+            return null
+        }
+
+        val surface = player.getSurfaceView() ?: return null
+        // The surface has already been letterboxed to the video's aspect ratio
+        // by fitSurfaceToScreen(), so its measured bounds are the video shape.
+        val width = surface.width
+        val height = surface.height
+        if (width <= 0 || height <= 0) return null
+
+        val ratio = width.toDouble() / height.toDouble()
+        val minRatio = 1.0 / 2.39
+        val maxRatio = 2.39
+        val clamped = ratio.coerceIn(minRatio, maxRatio)
+
+        // Scale to integers; Rational(width, height) directly can overflow for
+        // large surfaces, and the clamped value may not match the raw pixels.
+        return Rational((clamped * 1000).toInt(), 1000)
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun buildPlayPauseAction(activity: Activity): RemoteAction {
+        val isPlaying = try {
+            JellyTauPlayer.getInstance().getExoPlayer().isPlaying
+        } catch (e: Exception) {
+            false
+        }
+
+        val (iconRes, title, controlType, requestCode) = if (isPlaying) {
+            Quad(
+                android.R.drawable.ic_media_pause,
+                "Pause",
+                CONTROL_PAUSE,
+                REQUEST_PAUSE
+            )
+        } else {
+            Quad(
+                android.R.drawable.ic_media_play,
+                "Play",
+                CONTROL_PLAY,
+                REQUEST_PLAY
+            )
+        }
+
+        val intent = Intent(ACTION_MEDIA_CONTROL)
+            .putExtra(EXTRA_CONTROL_TYPE, controlType)
+            // Explicit package keeps the broadcast internal to the app.
+            .setPackage(activity.packageName)
+
+        val flags = android.app.PendingIntent.FLAG_UPDATE_CURRENT or
+            android.app.PendingIntent.FLAG_IMMUTABLE
+
+        val pendingIntent = android.app.PendingIntent.getBroadcast(
+            activity,
+            requestCode,
+            intent,
+            flags
+        )
+
+        return RemoteAction(
+            Icon.createWithResource(activity, iconRes),
+            title,
+            title,
+            pendingIntent
+        )
+    }
+
+    private data class Quad<A, B, C, D>(
+        val first: A,
+        val second: B,
+        val third: C,
+        val fourth: D
+    )
+
+    /**
+     * Refresh the PiP window's action button so it tracks play/pause state
+     * while the window is open. Safe to call when not in PiP (no-op).
+     */
+    fun updatePipActions(activity: Activity) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return
+        if (!activity.isInPictureInPictureMode) return
+        try {
+            activity.setPictureInPictureParams(buildParams(activity))
+        } catch (e: Exception) {
+            android.util.Log.w(TAG, "Failed to update PiP actions", e)
+        }
+    }
+
+    /**
+     * Called from MainActivity.onPictureInPictureModeChanged.
+     *
+     * Entering: hide the WebView so only the video surface shows, and register
+     * the receiver backing the PiP play/pause button.
+     * Leaving: restore the WebView and unregister.
+     */
+    fun onPipModeChanged(activity: Activity, isInPipMode: Boolean) {
+        if (isInPipMode) {
+            hideWebView(activity)
+            registerReceiver(activity)
+        } else {
+            unregisterReceiver(activity)
+            showWebView()
+            // The surface was laid out against the tiny PiP bounds; re-fit it to
+            // the restored full-screen bounds or the video stays postage-stamp sized.
+            try {
+                JellyTauPlayer.getInstance().fitSurfaceToScreen()
+            } catch (e: Exception) {
+                android.util.Log.w(TAG, "Failed to re-fit surface after PiP", e)
+            }
+        }
+    }
+
+    private fun hideWebView(activity: Activity) {
+        val webView = findWebView(activity.window.decorView)
+        if (webView == null) {
+            android.util.Log.w(TAG, "No WebView found to hide for PiP")
+            return
+        }
+        // GONE rather than INVISIBLE: the WebView is opaque, and GONE also stops
+        // it from consuming layout space in the shrunken window.
+        webView.visibility = android.view.View.GONE
+        hiddenWebView = webView
+        android.util.Log.d(TAG, "WebView hidden for PiP")
+    }
+
+    private fun showWebView() {
+        hiddenWebView?.let {
+            it.visibility = android.view.View.VISIBLE
+            android.util.Log.d(TAG, "WebView restored after PiP")
+        }
+        hiddenWebView = null
+    }
+
+    private fun registerReceiver(activity: Activity) {
+        if (receiver != null) return
+
+        val r = object : BroadcastReceiver() {
+            override fun onReceive(context: Context?, intent: Intent?) {
+                if (intent?.action != ACTION_MEDIA_CONTROL) return
+                val player = try {
+                    JellyTauPlayer.getInstance()
+                } catch (e: Exception) {
+                    return
+                }
+                when (intent.getIntExtra(EXTRA_CONTROL_TYPE, 0)) {
+                    CONTROL_PLAY -> player.play()
+                    CONTROL_PAUSE -> player.pause()
+                }
+                // Swap the button to reflect the new state.
+                updatePipActions(activity)
+            }
+        }
+
+        val filter = IntentFilter(ACTION_MEDIA_CONTROL)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            activity.registerReceiver(r, filter, Context.RECEIVER_NOT_EXPORTED)
+        } else {
+            @Suppress("UnspecifiedRegisterReceiverFlag")
+            activity.registerReceiver(r, filter)
+        }
+        receiver = r
+        android.util.Log.d(TAG, "PiP media control receiver registered")
+    }
+
+    private fun unregisterReceiver(activity: Activity) {
+        receiver?.let {
+            try {
+                activity.unregisterReceiver(it)
+            } catch (e: IllegalArgumentException) {
+                // Already unregistered - harmless.
+            }
+        }
+        receiver = null
+    }
+
+    private fun findWebView(view: android.view.View): WebView? {
+        if (view is WebView) return view
+        if (view is ViewGroup) {
+            for (i in 0 until view.childCount) {
+                findWebView(view.getChildAt(i))?.let { return it }
+            }
+        }
+        return null
+    }
+}

src-tauri/android/src/main/java/com/dtourolle/jellytau/player/JellyTauPlaybackService.kt

@@ -187,6 +187,9 @@ class JellyTauPlaybackService : MediaSessionService() {
 
                 override fun onSeekTo(position: Long) {
                     android.util.Log.d("JellyTauPlaybackService", "Lock screen: Seek to $position")
+                    // The scrubber is absolute; Rust owns the seek in absolute terms
+                    // (in a background-audio handoff it rebuilds the stream at this
+                    // StartTimeTicks). Send the absolute position as-is.
                     val positionSeconds = position / 1000.0
                     nativeOnMediaCommand("seek:$positionSeconds")
                 }
@@ -259,6 +262,25 @@ class JellyTauPlaybackService : MediaSessionService() {
     private var lastArtist: String = ""
     private var lastIsPlaying: Boolean = false
 
+    // Base offset (ms) added to every position reported to the lockscreen
+    // MediaSession. During a background-audio handoff the audio stream is
+    // requested with StartTimeTicks = the handoff point, so ExoPlayer reports
+    // position RELATIVE to that point (starting at 0). The metadata duration,
+    // however, is the full absolute length — so without this base the scrubber
+    // thumb sits near 0:00 on a full-length bar. Set from the known handoff
+    // position via setPositionOffset(); 0 for normal playback.
+    private var positionOffsetMs: Long = 0L
+
+    /**
+     * Set the base position offset (seconds) applied to lockscreen positions.
+     * Called by the native layer when entering/exiting a background-audio handoff.
+     * Pass 0 to clear (normal playback, where ExoPlayer's position is absolute).
+     */
+    fun setPositionOffset(offsetSeconds: Double) {
+        positionOffsetMs = (offsetSeconds * 1000.0).toLong().coerceAtLeast(0L)
+        android.util.Log.d("JellyTauPlaybackService", "Position offset set to ${positionOffsetMs}ms")
+    }
+
     /**
      * Update the MediaSession metadata and playback state, plus the notification.
      *
@@ -292,8 +314,8 @@ class JellyTauPlaybackService : MediaSessionService() {
 
         session.setMetadata(metadataBuilder.build())
 
-        // Update MediaSession playback state
-        session.setPlaybackState(buildPlaybackState(isPlaying, position))
+        // Update MediaSession playback state (position made absolute via the base offset).
+        session.setPlaybackState(buildPlaybackState(isPlaying, position + positionOffsetMs))
 
         // While casting, re-assert the remote volume provider. Metadata pushes
         // arrive on the session poller thread and can race with (or arrive
@@ -322,7 +344,8 @@ class JellyTauPlaybackService : MediaSessionService() {
         val session = mediaSessionCompat ?: return
         val notificationStateChanged = isPlaying != lastIsPlaying
         lastIsPlaying = isPlaying
-        session.setPlaybackState(buildPlaybackState(isPlaying, position))
+        // Absolute position for the scrubber = relative ExoPlayer position + base offset.
+        session.setPlaybackState(buildPlaybackState(isPlaying, position + positionOffsetMs))
         // Only rebuild the notification when the play/pause icon actually flips.
         if (notificationStateChanged) {
             updateNotification(lastTitle, lastArtist, isPlaying)

src-tauri/src/auth/mod.rs

@@ -4,8 +4,8 @@ use serde::{Deserialize, Serialize};
 use std::sync::Arc;
 use tokio::sync::RwLock;
 
-use crate::jellyfin::http_client::HttpClient;
 use crate::connectivity::ConnectivityMonitor;
+use crate::jellyfin::http_client::HttpClient;
 
 pub use session_verifier::SessionVerifier;
 
@@ -99,7 +99,10 @@ impl AuthManager {
     }
 
     /// Set the connectivity monitor (for marking server reachability)
-    pub fn set_connectivity_monitor(&mut self, monitor: Arc<tokio::sync::Mutex<ConnectivityMonitor>>) {
+    pub fn set_connectivity_monitor(
+        &mut self,
+        monitor: Arc<tokio::sync::Mutex<ConnectivityMonitor>>,
+    ) {
         self.connectivity_monitor = Some(monitor);
     }
 
@@ -133,9 +136,17 @@ impl AuthManager {
 
         log::info!("[AuthManager] Connecting to server: {}", normalized_url);
 
-        match self.http_client.get_json_fast::<PublicSystemInfo>(&endpoint).await {
+        match self
+            .http_client
+            .get_json_fast::<PublicSystemInfo>(&endpoint)
+            .await
+        {
             Ok(info) => {
-                log::info!("[AuthManager] Connected to server: {} ({})", info.server_name, info.version);
+                log::info!(
+                    "[AuthManager] Connected to server: {} ({})",
+                    info.server_name,
+                    info.version
+                );
 
                 // Mark server as reachable
                 if let Some(monitor) = &self.connectivity_monitor {
@@ -181,7 +192,10 @@ impl AuthManager {
         let auth_header = HttpClient::build_auth_header(None, device_id);
 
         // Build request manually for custom headers
-        let request = self.http_client.client.post(&endpoint)
+        let request = self
+            .http_client
+            .client
+            .post(&endpoint)
             .header("Content-Type", "application/json")
             .header("X-Emby-Authorization", auth_header)
             .json(&serde_json::json!({
@@ -192,19 +206,31 @@ impl AuthManager {
             .map_err(|e| format!("Failed to build request: {}", e))?;
 
         // Use retry logic
-        let response = self.http_client.request_with_retry(request).await
+        let response = self
+            .http_client
+            .request_with_retry(request)
+            .await
             .map_err(|e| format!("Login request failed: {}", e))?;
 
         if !response.status().is_success() {
             let status = response.status();
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
             return Err(format!("Login failed: HTTP {}: {}", status, error_text));
         }
 
-        let auth_response: AuthenticateByNameResponse = response.json().await
+        let auth_response: AuthenticateByNameResponse = response
+            .json()
+            .await
             .map_err(|e| format!("Failed to parse login response: {}", e))?;
 
-        log::info!("[AuthManager] Login successful for user: {} ({})", auth_response.user.name, auth_response.user.id);
+        log::info!(
+            "[AuthManager] Login successful for user: {} ({})",
+            auth_response.user.name,
+            auth_response.user.id
+        );
 
         // Mark server as reachable
         if let Some(monitor) = &self.connectivity_monitor {
@@ -243,13 +269,19 @@ impl AuthManager {
         let auth_header = HttpClient::build_auth_header(Some(access_token), device_id);
 
         // Build request manually for custom headers
-        let request = self.http_client.client.get(&endpoint)
+        let request = self
+            .http_client
+            .client
+            .get(&endpoint)
             .header("X-Emby-Authorization", auth_header)
             .build()
             .map_err(|e| format!("Failed to build request: {}", e))?;
 
         // Use retry logic
-        let response = self.http_client.request_with_retry(request).await
+        let response = self
+            .http_client
+            .request_with_retry(request)
+            .await
             .map_err(|e| {
                 log::warn!("[AuthManager] Session verification failed: {}", e);
                 format!("Session verification failed: {}", e)
@@ -257,24 +289,34 @@ impl AuthManager {
 
         if !response.status().is_success() {
             let status = response.status();
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
 
             // Mark server as unreachable for auth errors
             if status.as_u16() == 401 || status.as_u16() == 403 {
                 log::warn!("[AuthManager] Session invalid: HTTP {}", status);
                 if let Some(monitor) = &self.connectivity_monitor {
                     let monitor = monitor.lock().await;
-                    monitor.mark_unreachable(Some(format!("Authentication failed: {}", status))).await;
+                    monitor
+                        .mark_unreachable(Some(format!("Authentication failed: {}", status)))
+                        .await;
                 }
             }
 
             return Err(format!("HTTP {}: {}", status, error_text));
         }
 
-        let user_response: JellyfinUser = response.json().await
+        let user_response: JellyfinUser = response
+            .json()
+            .await
             .map_err(|e| format!("Failed to parse user response: {}", e))?;
 
-        log::info!("[AuthManager] Session verified successfully for: {}", user_response.name);
+        log::info!(
+            "[AuthManager] Session verified successfully for: {}",
+            user_response.name
+        );
 
         // Mark server as reachable
         if let Some(monitor) = &self.connectivity_monitor {
@@ -306,7 +348,10 @@ impl AuthManager {
         let auth_header = HttpClient::build_auth_header(Some(access_token), device_id);
 
         // Build request
-        let request = self.http_client.client.post(&endpoint)
+        let request = self
+            .http_client
+            .client
+            .post(&endpoint)
             .header("X-Emby-Authorization", auth_header)
             .build()
             .map_err(|e| format!("Failed to build request: {}", e))?;

src-tauri/src/auth/session_verifier.rs

@@ -1,8 +1,8 @@
+use serde::Serialize;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 use std::time::Duration;
 use tauri::{AppHandle, Emitter};
-use serde::Serialize;
 
 use super::{AuthManager, User};
 
@@ -65,7 +65,10 @@ impl SessionVerifier {
                 let session = auth_manager.get_session().await;
 
                 if let Some(session) = session {
-                    log::debug!("[SessionVerifier] Verifying session for: {}", session.username);
+                    log::debug!(
+                        "[SessionVerifier] Verifying session for: {}",
+                        session.username
+                    );
 
                     // Verify the session
                     match auth_manager
@@ -113,7 +116,10 @@ impl SessionVerifier {
                                         reason: "Session expired".to_string(),
                                     };
                                     if let Err(e) = app.emit("auth:needs-reauth", event) {
-                                        log::error!("[SessionVerifier] Failed to emit event: {}", e);
+                                        log::error!(
+                                            "[SessionVerifier] Failed to emit event: {}",
+                                            e
+                                        );
                                     }
                                 }
 
@@ -131,12 +137,18 @@ impl SessionVerifier {
                                         message: e.clone(),
                                     };
                                     if let Err(e) = app.emit("auth:network-error", event) {
-                                        log::error!("[SessionVerifier] Failed to emit event: {}", e);
+                                        log::error!(
+                                            "[SessionVerifier] Failed to emit event: {}",
+                                            e
+                                        );
                                     }
                                 }
                             } else {
                                 // Unknown error - log but don't invalidate
-                                log::error!("[SessionVerifier] Unknown error during verification: {}", e);
+                                log::error!(
+                                    "[SessionVerifier] Unknown error during verification: {}",
+                                    e
+                                );
                             }
                         }
                     }

src-tauri/src/commands/auth.rs

@@ -1,7 +1,11 @@
+//! Authentication and session-lifecycle commands.
+//!
+//! TRACES: UR-042 | IR-009, IR-014, JA-002 | DR-054
+
 use std::sync::Arc;
 use tauri::State;
 
-use crate::auth::{AuthManager, SessionVerifier, ServerInfo, AuthResult, Session};
+use crate::auth::{AuthManager, AuthResult, ServerInfo, Session, SessionVerifier};
 
 /// Wrapper for AuthManager to manage in Tauri state
 pub struct AuthManagerWrapper(pub Arc<AuthManager>);
@@ -27,17 +31,18 @@ pub async fn auth_initialize(
     log::info!("[AuthManager] Restoring session from storage...");
 
     // Use the existing storage_get_active_session function
-    let active_session = match crate::commands::storage::storage_get_active_session(database, credentials).await {
-        Ok(Some(session)) => session,
-        Ok(None) => {
-            log::info!("[AuthManager] No active session in storage");
-            return Ok(None);
-        }
-        Err(e) => {
-            log::error!("[AuthManager] Failed to get active session: {}", e);
-            return Err(e);
-        }
-    };
+    let active_session =
+        match crate::commands::storage::storage_get_active_session(database, credentials).await {
+            Ok(Some(session)) => session,
+            Ok(None) => {
+                log::info!("[AuthManager] No active session in storage");
+                return Ok(None);
+            }
+            Err(e) => {
+                log::error!("[AuthManager] Failed to get active session: {}", e);
+                return Err(e);
+            }
+        };
 
     // Create session object from active session with normalized URL
     let normalized_url = crate::auth::AuthManager::normalize_url(&active_session.server_url)?;
@@ -56,7 +61,11 @@ pub async fn auth_initialize(
     // Store in AuthManager
     auth_manager.0.set_session(Some(session.clone())).await;
 
-    log::info!("[AuthManager] Session restored for user: {} with normalized URL: {}", session.username, session.server_url);
+    log::info!(
+        "[AuthManager] Session restored for user: {} with normalized URL: {}",
+        session.username,
+        session.server_url
+    );
     Ok(Some(session))
 }
 
@@ -80,7 +89,10 @@ pub async fn auth_login(
     device_id: String,
     auth_manager: State<'_, AuthManagerWrapper>,
 ) -> Result<AuthResult, String> {
-    let result = auth_manager.0.login(&server_url, &username, &password, &device_id).await?;
+    let result = auth_manager
+        .0
+        .login(&server_url, &username, &password, &device_id)
+        .await?;
 
     // Create session from auth result with normalized URL
     let normalized_url = crate::auth::AuthManager::normalize_url(&server_url)?;
@@ -111,7 +123,11 @@ pub async fn auth_verify_session(
     device_id: String,
     auth_manager: State<'_, AuthManagerWrapper>,
 ) -> Result<bool, String> {
-    match auth_manager.0.verify_session(&server_url, &user_id, &access_token, &device_id).await {
+    match auth_manager
+        .0
+        .verify_session(&server_url, &user_id, &access_token, &device_id)
+        .await
+    {
         Ok(_) => Ok(true),
         Err(e) => {
             log::warn!("[AuthCommands] Session verification failed: {}", e);
@@ -138,7 +154,10 @@ pub async fn auth_logout(
     drop(verifier_guard);
 
     // Call Jellyfin logout endpoint
-    auth_manager.0.logout(&server_url, &access_token, &device_id).await?;
+    auth_manager
+        .0
+        .logout(&server_url, &access_token, &device_id)
+        .await?;
 
     // Clear session
     auth_manager.0.set_session(None).await;
@@ -228,11 +247,22 @@ pub async fn auth_reauthenticate(
     auth_manager: State<'_, AuthManagerWrapper>,
 ) -> Result<AuthResult, String> {
     // Get current session to extract server_url and username
-    let session = auth_manager.0.get_session().await
+    let session = auth_manager
+        .0
+        .get_session()
+        .await
         .ok_or_else(|| "No active session to re-authenticate".to_string())?;
 
     // Re-login with stored credentials
-    let result = auth_manager.0.login(&session.server_url, &session.username, &password, &device_id).await?;
+    let result = auth_manager
+        .0
+        .login(
+            &session.server_url,
+            &session.username,
+            &password,
+            &device_id,
+        )
+        .await?;
 
     // Update session with new token
     let updated_session = Session {

src-tauri/src/commands/catalog.rs

@@ -1,5 +1,7 @@
 //! Tauri commands for the offline "browse & queue" feature.
 //!
+//! TRACES: UR-002, UR-007, UR-024 | JA-004, JA-016 | DR-012, DR-027
+//!
 //! Two backend pieces support browsing the full server catalog while offline
 //! and queueing downloads that fire on reconnect:
 //!
@@ -17,8 +19,8 @@ use std::sync::Arc;
 use log::{info, warn};
 use tauri::State;
 
-use crate::commands::repository::RepositoryManagerWrapper;
 use crate::commands::download::{pump_download_queue, DownloadManagerWrapper};
+use crate::commands::repository::RepositoryManagerWrapper;
 use crate::commands::storage::DatabaseWrapper;
 use crate::repository::types::GetItemsOptions;
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
@@ -79,7 +81,10 @@ pub async fn sync_full_catalog(
     };
 
     let libraries = repo.get_libraries().await.map_err(|e| e.to_string())?;
-    info!("[Catalog] Full sync starting across {} libraries", libraries.len());
+    info!(
+        "[Catalog] Full sync starting across {} libraries",
+        libraries.len()
+    );
 
     let include_types: Vec<String> = CATALOG_ITEM_TYPES.iter().map(|s| s.to_string()).collect();
 
@@ -104,7 +109,10 @@ pub async fn sync_full_catalog(
                 items_cached += items.len();
             }
             Err(e) => {
-                warn!("[Catalog] Failed to sync library '{}': {:?}", library.name, e);
+                warn!(
+                    "[Catalog] Failed to sync library '{}': {:?}",
+                    library.name, e
+                );
                 libraries_failed += 1;
             }
         }
@@ -208,10 +216,16 @@ where
         .map_err(|e| e.to_string())?;
 
     if rows.is_empty() {
-        return Ok(ResumeQueuedResult { resolved: 0, failed: 0 });
+        return Ok(ResumeQueuedResult {
+            resolved: 0,
+            failed: 0,
+        });
     }
 
-    info!("[Catalog] Resolving {} offline-queued downloads on reconnect", rows.len());
+    info!(
+        "[Catalog] Resolving {} offline-queued downloads on reconnect",
+        rows.len()
+    );
 
     let mut resolved = 0usize;
     let mut failed = 0usize;
@@ -240,7 +254,10 @@ where
             Ok(n) if n > 0 => resolved += 1,
             Ok(_) => {} // already resolved by someone else; not a failure
             Err(e) => {
-                warn!("[Catalog] Failed to persist URL for download {}: {}", download_id, e);
+                warn!(
+                    "[Catalog] Failed to persist URL for download {}: {}",
+                    download_id, e
+                );
                 failed += 1;
             }
         }
@@ -309,17 +326,22 @@ pub async fn resume_queued_downloads(
             let repo = Arc::clone(&repo_for_resolve);
             async move {
                 if media_type == "video" {
-                    Some(<HybridRepository as MediaRepository>::get_video_download_url(
-                        repo.as_ref(),
-                        &item_id,
-                        &quality,
-                        None,
-                    ))
+                    Some(
+                        <HybridRepository as MediaRepository>::get_video_download_url(
+                            repo.as_ref(),
+                            &item_id,
+                            &quality,
+                            None,
+                        ),
+                    )
                 } else {
                     match repo.get_audio_stream_url(&item_id).await {
                         Ok(url) => Some(url),
                         Err(e) => {
-                            warn!("[Catalog] Failed to resolve audio URL for {}: {:?}", item_id, e);
+                            warn!(
+                                "[Catalog] Failed to resolve audio URL for {}: {:?}",
+                                item_id, e
+                            );
                             None
                         }
                     }
@@ -341,7 +363,10 @@ pub async fn resume_queued_downloads(
         pump_download_queue(app, db_service, active_downloads).await;
     }
 
-    info!("[Catalog] Resume complete: {} resolved, {} failed", resolved, failed);
+    info!(
+        "[Catalog] Resume complete: {} resolved, {} failed",
+        resolved, failed
+    );
 
     Ok(ResumeQueuedResult { resolved, failed })
 }
@@ -384,14 +409,21 @@ mod tests {
             vec![
                 QueryParam::String(item_id.to_string()),
                 QueryParam::String(status.to_string()),
-                stream_url.map(|s| QueryParam::String(s.to_string())).unwrap_or(QueryParam::Null),
-                media_type.map(|s| QueryParam::String(s.to_string())).unwrap_or(QueryParam::Null),
+                stream_url
+                    .map(|s| QueryParam::String(s.to_string()))
+                    .unwrap_or(QueryParam::Null),
+                media_type
+                    .map(|s| QueryParam::String(s.to_string()))
+                    .unwrap_or(QueryParam::Null),
             ],
         );
         db.execute(q).await.unwrap();
     }
 
-    async fn get_row(db: &Arc<RusqliteService>, item_id: &str) -> (String, Option<String>, Option<String>) {
+    async fn get_row(
+        db: &Arc<RusqliteService>,
+        item_id: &str,
+    ) -> (String, Option<String>, Option<String>) {
         let q = Query::with_params(
             "SELECT status, stream_url, target_dir FROM downloads WHERE item_id = ?",
             vec![QueryParam::String(item_id.to_string())],
@@ -401,6 +433,12 @@ mod tests {
             .unwrap()
     }
 
+    /// IT-017: a download queued from a greyed-out offline catalog entry
+    /// (pending, `stream_url IS NULL`) persists, and on reconnect its URL is
+    /// resolved and the row is healed (URL + target dir) so the pump can start
+    /// it — while already-resolved rows are left untouched.
+    ///
+    /// TRACES: UR-052, UR-011 | IT-017
     #[tokio::test]
     async fn resolves_offline_queued_row_and_leaves_resolved_rows_untouched() {
         let db = test_db();
@@ -411,11 +449,12 @@ mod tests {
         // A completed row: irrelevant.
         insert_download(&db, "done", "completed", Some("http://done/url"), None).await;
 
-        let out = resolve_pending_download_urls(&db, "/data/downloads", |item_id, _mt, _q| async move {
-            Some(format!("http://resolved/{item_id}"))
-        })
-        .await
-        .unwrap();
+        let out =
+            resolve_pending_download_urls(&db, "/data/downloads", |item_id, _mt, _q| async move {
+                Some(format!("http://resolved/{item_id}"))
+            })
+            .await
+            .unwrap();
 
         assert_eq!(out.resolved, 1);
         assert_eq!(out.failed, 0);
@@ -455,12 +494,13 @@ mod tests {
         let db = test_db();
         insert_download(&db, "vid-1", "pending", None, Some("video")).await;
 
-        let out = resolve_pending_download_urls(&db, "/data", |item_id, media_type, _q| async move {
-            assert_eq!(media_type, "video");
-            Some(format!("http://transcode/{item_id}"))
-        })
-        .await
-        .unwrap();
+        let out =
+            resolve_pending_download_urls(&db, "/data", |item_id, media_type, _q| async move {
+                assert_eq!(media_type, "video");
+                Some(format!("http://transcode/{item_id}"))
+            })
+            .await
+            .unwrap();
 
         assert_eq!(out.resolved, 1);
         let (_s, url, _t) = get_row(&db, "vid-1").await;

src-tauri/src/commands/connectivity.rs

@@ -1,6 +1,10 @@
+//! Server-reachability / connectivity commands.
+//!
+//! TRACES: UR-043 | IR-027 | DR-055
+
+use crate::connectivity::{ConnectivityMonitor, ConnectivityStatus};
 use std::sync::Arc;
 use tauri::State;
-use crate::connectivity::{ConnectivityMonitor, ConnectivityStatus};
 
 /// Wrapper for ConnectivityMonitor managed state
 pub struct ConnectivityMonitorWrapper(pub Arc<tokio::sync::Mutex<ConnectivityMonitor>>);

src-tauri/src/commands/conversions.rs

@@ -1,11 +1,12 @@
 //! Tauri commands for unit conversions and formatting
 //!
+//! TRACES: UR-005 | DR-009
+//!
 //! These commands expose conversion utilities to the frontend,
 //! allowing centralized conversion logic in Rust.
 
 use crate::utils::conversions::{
-    format_time, format_time_long, calculate_progress,
-    ticks_to_seconds, percent_to_volume,
+    calculate_progress, format_time, format_time_long, percent_to_volume, ticks_to_seconds,
 };
 
 /// Format time in seconds to MM:SS display string

src-tauri/src/commands/device.rs

@@ -81,7 +81,10 @@ pub async fn device_get_id(db: State<'_, DatabaseWrapper>) -> Result<String, Str
 /// TRACES: UR-009 | DR-011
 #[tauri::command]
 #[specta::specta]
-pub async fn device_set_id(device_id: String, db: State<'_, DatabaseWrapper>) -> Result<(), String> {
+pub async fn device_set_id(
+    device_id: String,
+    db: State<'_, DatabaseWrapper>,
+) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())

src-tauri/src/commands/download/mod.rs

@@ -2,14 +2,15 @@
 
 #[cfg(test)]
 use crate::utils::lock::MutexSafe;
+use log::{debug, error, info, warn};
 use std::path::PathBuf;
 use std::sync::{Arc, Mutex};
 use tauri::{Manager, State};
-use log::{debug, error, info, warn};
 
+use super::{DatabaseWrapper, SmartCacheWrapper};
+use crate::download::network::{NetworkState, NetworkStateHandle, NetworkType};
 use crate::download::{DownloadInfo, DownloadManager};
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
-use super::{DatabaseWrapper, SmartCacheWrapper};
 
 // Cohesive command clusters in their own submodules, re-exported so the command
 // names remain at `commands::download::*` (invoke_handler unchanged).
@@ -21,6 +22,80 @@ pub use smart_cache::*;
 /// Wrapper for DownloadManager to be used as Tauri state
 pub struct DownloadManagerWrapper(pub Mutex<DownloadManager>);
 
+/// Wrapper for the current network transport, used by the WiFi-only gate.
+///
+/// TRACES: UR-053 | DR-074
+pub struct NetworkStateWrapper(pub NetworkStateHandle);
+
+/// Report the device's current network transport (Android → Rust).
+///
+/// The frontend calls this on startup and whenever the native network callback
+/// fires. Updating to an acceptable network re-pumps the download queue, so a
+/// queue parked on "waiting for WiFi" drains itself without user action.
+///
+/// TRACES: UR-053 | DR-074
+#[tauri::command]
+#[specta::specta]
+pub async fn set_network_state(
+    app: tauri::AppHandle,
+    network: NetworkStateWrapperArg,
+    db: State<'_, DatabaseWrapper>,
+    download_manager: State<'_, DownloadManagerWrapper>,
+) -> Result<(), String> {
+    let new_state = NetworkState {
+        network_type: network.network_type,
+        unmetered: network.unmetered,
+    };
+
+    let handle = app.state::<NetworkStateWrapper>().0.clone();
+    let previous = handle.get().await;
+    handle.set(new_state).await;
+
+    if previous != new_state {
+        info!(
+            "[network] Transport changed: {:?} (unmetered={}) -> {:?} (unmetered={})",
+            previous.network_type, previous.unmetered, new_state.network_type, new_state.unmetered
+        );
+    }
+
+    // If the new network unblocks the gate, drain whatever was waiting.
+    if downloads_allowed_on_current_network(&app).await {
+        let db_service = {
+            let database = db.0.lock().map_err(|e| e.to_string())?;
+            Arc::new(database.service())
+        };
+        let active = {
+            let manager = download_manager.0.lock().map_err(|e| e.to_string())?;
+            manager.get_active_downloads()
+        };
+        pump_download_queue(app.clone(), db_service, active).await;
+    }
+
+    Ok(())
+}
+
+/// Argument struct for [`set_network_state`].
+///
+/// TRACES: UR-053 | DR-074
+#[derive(specta::Type, Debug, Clone, serde::Serialize, serde::Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct NetworkStateWrapperArg {
+    pub network_type: NetworkType,
+    pub unmetered: bool,
+}
+
+/// Whether downloads are currently permitted by the WiFi-only gate.
+///
+/// The downloads UI uses this to render "Waiting for WiFi" on pending rows
+/// rather than leaving them looking silently stuck.
+///
+/// TRACES: UR-053 | DR-074
+#[tauri::command]
+#[specta::specta]
+pub async fn get_downloads_allowed(app: tauri::AppHandle) -> Result<bool, String> {
+    Ok(downloads_allowed_on_current_network(&app).await)
+}
+
 /// Download statistics computed server-side
 #[allow(dead_code)]
 #[derive(specta::Type, Debug, Clone, serde::Serialize, serde::Deserialize)]
@@ -111,7 +186,13 @@ pub async fn download_item_and_start(
     request: DownloadItemAndStartRequest,
 ) -> Result<i64, String> {
     let DownloadItemAndStartRequest {
-        item_id, user_id, stream_url, target_dir, item_name, artist_name, album_name,
+        item_id,
+        user_id,
+        stream_url,
+        target_dir,
+        item_name,
+        artist_name,
+        album_name,
     } = request;
     // Sanitize filename
     let safe_name = sanitize_filename(item_name.as_deref().unwrap_or(&item_id));
@@ -132,7 +213,8 @@ pub async fn download_item_and_start(
             album_name,
             expected_size: None,
         },
-    ).await?;
+    )
+    .await?;
 
     // Start the download immediately
     start_download(
@@ -142,7 +224,8 @@ pub async fn download_item_and_start(
         download_id,
         stream_url,
         target_dir,
-    ).await?;
+    )
+    .await?;
 
     Ok(download_id)
 }
@@ -156,7 +239,15 @@ pub async fn download_item(
     request: DownloadItemRequest,
 ) -> Result<i64, String> {
     let DownloadItemRequest {
-        item_id, user_id, file_path, mime_type, priority, item_name, artist_name, album_name, expected_size,
+        item_id,
+        user_id,
+        file_path,
+        mime_type,
+        priority,
+        item_name,
+        artist_name,
+        album_name,
+        expected_size,
     } = request;
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
@@ -172,18 +263,24 @@ pub async fn download_item(
         };
 
         // Check if we have space
-        let can_download = cache_arc.can_download_async(&db_service, &user_id, size as u64).await;
+        let can_download = cache_arc
+            .can_download_async(&db_service, &user_id, size as u64)
+            .await;
 
         if !can_download {
             warn!("Storage limit reached. Attempting to free space...");
 
             // Try to evict LRU items to make space
-            match cache_arc.evict_lru_async(&db_service, &user_id, size as u64).await {
+            match cache_arc
+                .evict_lru_async(&db_service, &user_id, size as u64)
+                .await
+            {
                 Ok(freed) if freed > 0 => {
                     info!("Freed {} bytes, proceeding with download", freed);
                 }
                 Ok(_) => {
-                    let storage_limit = cache_arc.get_config().map(|c| c.storage_limit).unwrap_or(0);
+                    let storage_limit =
+                        cache_arc.get_config().map(|c| c.storage_limit).unwrap_or(0);
                     return Err(format!(
                         "Storage limit reached ({} bytes). Unable to free enough space.",
                         storage_limit
@@ -220,7 +317,10 @@ pub async fn download_item(
         ],
     );
 
-    db_service.execute(insert_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(insert_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Query for the download ID by unique constraint columns
     // NOTE: last_insert_rowid() doesn't work reliably with UPSERT - it only updates on INSERT, not UPDATE
@@ -291,12 +391,18 @@ pub async fn download_album(
             ],
         );
 
-        db_service.execute(insert_query).await.map_err(|e| e.to_string())?;
+        db_service
+            .execute(insert_query)
+            .await
+            .map_err(|e| e.to_string())?;
 
         // Query for the actual download ID (last_insert_rowid doesn't work with UPSERT)
         let id_query = Query::with_params(
             "SELECT id FROM downloads WHERE item_id = ? AND user_id = ?",
-            vec![QueryParam::String(track_id), QueryParam::String(user_id.clone())],
+            vec![
+                QueryParam::String(track_id),
+                QueryParam::String(user_id.clone()),
+            ],
         );
 
         let download_id: i64 = db_service
@@ -317,8 +423,17 @@ pub async fn download_video(
     request: DownloadVideoRequest,
 ) -> Result<i64, String> {
     let DownloadVideoRequest {
-        item_id, user_id, file_path, mime_type, priority, item_name, quality_preset,
-        series_name, season_name, episode_number, season_number,
+        item_id,
+        user_id,
+        file_path,
+        mime_type,
+        priority,
+        item_name,
+        quality_preset,
+        series_name,
+        season_name,
+        episode_number,
+        season_number,
     } = request;
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
@@ -358,7 +473,10 @@ pub async fn download_video(
         ],
     );
 
-    db_service.execute(insert_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(insert_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Query for the download ID by unique constraint columns
     let id_query = Query::with_params(
@@ -403,7 +521,13 @@ pub async fn download_series(
 
     let episodes: Vec<(String, String, Option<String>, Option<i32>, Option<i32>)> = db_service
         .query_many(episodes_query, |row| {
-            Ok((row.get(0)?, row.get(1)?, row.get(2)?, row.get(3)?, row.get(4)?))
+            Ok((
+                row.get(0)?,
+                row.get(1)?,
+                row.get(2)?,
+                row.get(3)?,
+                row.get(4)?,
+            ))
         })
         .await
         .map_err(|e| e.to_string())?;
@@ -413,7 +537,9 @@ pub async fn download_series(
     // Queue each episode with descending priority (first episodes download first)
     // Priority starts high and decreases so earlier episodes finish first
     let total_episodes = episodes.len() as i32;
-    for (idx, (episode_id, episode_name, season_name, episode_number, season_number)) in episodes.into_iter().enumerate() {
+    for (idx, (episode_id, episode_name, season_name, episode_number, season_number)) in
+        episodes.into_iter().enumerate()
+    {
         let priority = 1000 - idx as i32; // High priority for first episodes
 
         // Create path like: videos/SeriesName/S01E01_Title.mp4
@@ -425,7 +551,12 @@ pub async fn download_series(
             episode_num,
             sanitize_filename(&episode_name)
         );
-        let file_path = format!("{}/{}/{}", base_path, sanitize_filename(&series_name), file_name);
+        let file_path = format!(
+            "{}/{}/{}",
+            base_path,
+            sanitize_filename(&series_name),
+            file_name
+        );
 
         let insert_query = Query::with_params(
             "INSERT INTO downloads (item_id, user_id, file_path, status, priority, queued_at,
@@ -450,17 +581,29 @@ pub async fn download_series(
                 QueryParam::String(episode_name),
                 QueryParam::String(quality.clone()),
                 QueryParam::String(series_name.clone()),
-                season_name.map(QueryParam::String).unwrap_or(QueryParam::Null),
-                episode_number.map(QueryParam::Int).unwrap_or(QueryParam::Null),
-                season_number.map(QueryParam::Int).unwrap_or(QueryParam::Null),
+                season_name
+                    .map(QueryParam::String)
+                    .unwrap_or(QueryParam::Null),
+                episode_number
+                    .map(QueryParam::Int)
+                    .unwrap_or(QueryParam::Null),
+                season_number
+                    .map(QueryParam::Int)
+                    .unwrap_or(QueryParam::Null),
             ],
         );
 
-        db_service.execute(insert_query).await.map_err(|e| e.to_string())?;
+        db_service
+            .execute(insert_query)
+            .await
+            .map_err(|e| e.to_string())?;
 
         let id_query = Query::with_params(
             "SELECT id FROM downloads WHERE item_id = ? AND user_id = ?",
-            vec![QueryParam::String(episode_id), QueryParam::String(user_id.clone())],
+            vec![
+                QueryParam::String(episode_id),
+                QueryParam::String(user_id.clone()),
+            ],
         );
 
         let download_id: i64 = db_service
@@ -471,7 +614,10 @@ pub async fn download_series(
         download_ids.push(download_id);
     }
 
-    info!("[download_series] Queued {} episodes for series '{}'", total_episodes, series_name);
+    info!(
+        "[download_series] Queued {} episodes for series '{}'",
+        total_episodes, series_name
+    );
     Ok(download_ids)
 }
 
@@ -524,7 +670,12 @@ pub async fn download_season(
             episode_num,
             sanitize_filename(&episode_name)
         );
-        let file_path = format!("{}/{}/{}", base_path, sanitize_filename(&series_name), file_name);
+        let file_path = format!(
+            "{}/{}/{}",
+            base_path,
+            sanitize_filename(&series_name),
+            file_name
+        );
 
         let insert_query = Query::with_params(
             "INSERT INTO downloads (item_id, user_id, file_path, status, priority, queued_at,
@@ -550,11 +701,17 @@ pub async fn download_season(
             ],
         );
 
-        db_service.execute(insert_query).await.map_err(|e| e.to_string())?;
+        db_service
+            .execute(insert_query)
+            .await
+            .map_err(|e| e.to_string())?;
 
         let id_query = Query::with_params(
             "SELECT id FROM downloads WHERE item_id = ? AND user_id = ?",
-            vec![QueryParam::String(episode_id), QueryParam::String(user_id.clone())],
+            vec![
+                QueryParam::String(episode_id),
+                QueryParam::String(user_id.clone()),
+            ],
         );
 
         let download_id: i64 = db_service
@@ -565,11 +722,15 @@ pub async fn download_season(
         download_ids.push(download_id);
     }
 
-    info!("[download_season] Queued {} episodes for {} - {}", download_ids.len(), series_name, season_name);
+    info!(
+        "[download_season] Queued {} episodes for {} - {}",
+        download_ids.len(),
+        series_name,
+        season_name
+    );
     Ok(download_ids)
 }
 
-
 /// Helper to compute download statistics from a list of downloads
 #[allow(dead_code)]
 fn compute_download_stats(downloads: &[DownloadInfo]) -> DownloadStats {
@@ -674,7 +835,10 @@ pub async fn get_downloads(
 /// Pause a download
 #[tauri::command]
 #[specta::specta]
-pub async fn pause_download(db: State<'_, DatabaseWrapper>, download_id: i64) -> Result<(), String> {
+pub async fn pause_download(
+    db: State<'_, DatabaseWrapper>,
+    download_id: i64,
+) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -692,7 +856,10 @@ pub async fn pause_download(db: State<'_, DatabaseWrapper>, download_id: i64) ->
 /// Resume a paused download
 #[tauri::command]
 #[specta::specta]
-pub async fn resume_download(db: State<'_, DatabaseWrapper>, download_id: i64) -> Result<(), String> {
+pub async fn resume_download(
+    db: State<'_, DatabaseWrapper>,
+    download_id: i64,
+) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -738,13 +905,20 @@ pub async fn cancel_download(
         vec![QueryParam::Int64(download_id)],
     );
 
-    db_service.execute(delete_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(delete_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Unregister from download manager (in case it was active)
     {
         let manager = download_manager.0.lock().map_err(|e| e.to_string())?;
         manager.unregister_download(download_id);
-        info!("Cancelled download {}. Active downloads: {}", download_id, manager.active_count());
+        info!(
+            "Cancelled download {}. Active downloads: {}",
+            download_id,
+            manager.active_count()
+        );
     }
 
     // Delete partial file if exists
@@ -800,7 +974,10 @@ pub async fn mark_download_failed(
 
     let query = Query::with_params(
         "UPDATE downloads SET status = 'failed', error_message = ? WHERE id = ?",
-        vec![QueryParam::String(error_message), QueryParam::Int64(download_id)],
+        vec![
+            QueryParam::String(error_message),
+            QueryParam::Int64(download_id),
+        ],
     );
 
     db_service.execute(query).await.map_err(|e| e.to_string())?;
@@ -834,7 +1011,10 @@ pub async fn start_download(
         })?;
 
         if !manager.can_start_download() {
-            warn!("Cannot start download: maximum concurrent downloads ({}) reached", manager.max_concurrent());
+            warn!(
+                "Cannot start download: maximum concurrent downloads ({}) reached",
+                manager.max_concurrent()
+            );
             debug!("   Active downloads: {}", manager.active_count());
             return Err(format!(
                 "Maximum concurrent downloads ({}) reached. Please wait for existing downloads to complete.",
@@ -845,12 +1025,19 @@ pub async fn start_download(
         // Register this download as active
         let registered = manager.register_download(download_id);
         if !registered {
-            warn!("Failed to register download {}: already registered or limit reached", download_id);
+            warn!(
+                "Failed to register download {}: already registered or limit reached",
+                download_id
+            );
             return Err("Download already in progress or limit reached".to_string());
         }
 
-        info!("Download {} registered. Active downloads: {}/{}",
-            download_id, manager.active_count(), manager.max_concurrent());
+        info!(
+            "Download {} registered. Active downloads: {}/{}",
+            download_id,
+            manager.active_count(),
+            manager.max_concurrent()
+        );
     }
 
     // Get download info from DB
@@ -868,21 +1055,23 @@ pub async fn start_download(
     );
 
     let (item_id, file_path, file_size): (String, String, Option<i64>) = db_service
-        .query_one(info_query, |row| Ok((row.get(0)?, row.get(1)?, row.get(2)?)))
+        .query_one(info_query, |row| {
+            Ok((row.get(0)?, row.get(1)?, row.get(2)?))
+        })
         .await
         .map_err(|e| {
             error!("Failed to query download info: {}", e);
             e.to_string()
         })?;
 
-    debug!("   Retrieved: item_id={}, file_path={}, file_size={:?}", item_id, file_path, file_size);
+    debug!(
+        "   Retrieved: item_id={}, file_path={}, file_size={:?}",
+        item_id, file_path, file_size
+    );
 
     // Make a HEAD request to get the file size from Content-Length header
     debug!("Making HEAD request to get file size...");
-    let head_response = reqwest::Client::new()
-        .head(&stream_url)
-        .send()
-        .await;
+    let head_response = reqwest::Client::new().head(&stream_url).send().await;
 
     let file_size_from_server = match head_response {
         Ok(response) => {
@@ -893,7 +1082,11 @@ pub async fn start_download(
                 .and_then(|v| v.parse::<i64>().ok());
 
             if let Some(size) = size {
-                debug!("   Got file size from server: {} bytes ({} MB)", size, size / 1024 / 1024);
+                debug!(
+                    "   Got file size from server: {} bytes ({} MB)",
+                    size,
+                    size / 1024 / 1024
+                );
             } else {
                 warn!("   Server didn't provide Content-Length header");
             }
@@ -929,7 +1122,10 @@ pub async fn start_download(
         )
     };
 
-    db_service.execute(update_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(update_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Emit started event
     let started_event = DownloadEvent::Started {
@@ -937,7 +1133,10 @@ pub async fn start_download(
         item_id: item_id.clone(),
     };
     debug!("Emitting download-event: {:?}", started_event);
-    debug!("   Serialized: {}", serde_json::to_string(&started_event).unwrap_or_default());
+    debug!(
+        "   Serialized: {}",
+        serde_json::to_string(&started_event).unwrap_or_default()
+    );
     match app.emit("download-event", started_event) {
         Ok(_) => debug!("   Event emitted successfully"),
         Err(e) => error!("   Event emit failed: {:?}", e),
@@ -998,7 +1197,10 @@ pub async fn enqueue_download(
             QueryParam::Int64(download_id),
         ],
     );
-    db_service.execute(update_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(update_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Kick the pump: it will start as many pending downloads as there are slots.
     let active_downloads = {
@@ -1056,7 +1258,9 @@ pub async fn enqueue_video_downloads(
         };
 
         // Build the transcode URL (pure URL builder, no server round-trip).
-        let stream_url = repo.as_ref().get_video_download_url(&item_id, &quality, None);
+        let stream_url = repo
+            .as_ref()
+            .get_video_download_url(&item_id, &quality, None);
 
         let update_query = Query::with_params(
             "UPDATE downloads SET status = 'pending', stream_url = ?, target_dir = ? WHERE id = ?",
@@ -1067,7 +1271,10 @@ pub async fn enqueue_video_downloads(
             ],
         );
         if let Err(e) = db_service.execute(update_query).await {
-            warn!("[enqueue_video] Failed to persist URL for download {}: {}", download_id, e);
+            warn!(
+                "[enqueue_video] Failed to persist URL for download {}: {}",
+                download_id, e
+            );
         }
     }
 
@@ -1081,6 +1288,37 @@ pub async fn enqueue_video_downloads(
     Ok(())
 }
 
+/// Whether the current network permits downloads, given the user's WiFi-only
+/// preference.
+///
+/// Reads `wifi_only` from the SmartCache config (the single home of the
+/// setting) and checks it against the transport reported by the platform. On
+/// desktop the transport defaults to unmetered ethernet, so this is always
+/// true there.
+///
+/// TRACES: UR-053 | DR-074
+pub(crate) async fn downloads_allowed_on_current_network(app: &tauri::AppHandle) -> bool {
+    let wifi_only = {
+        let smart_cache = app.state::<SmartCacheWrapper>();
+        let cache = match smart_cache.0.lock() {
+            Ok(c) => c,
+            Err(e) => {
+                error!("[pump] Failed to lock smart cache: {}", e);
+                // Fail open: a lock problem must not silently wedge downloads.
+                return true;
+            }
+        };
+        cache.get_config().map(|c| c.wifi_only).unwrap_or(false)
+    };
+
+    if !wifi_only {
+        return true;
+    }
+
+    let network = app.state::<NetworkStateWrapper>();
+    network.0.allows_download(true).await
+}
+
 /// Start as many pending downloads as there are free concurrency slots.
 ///
 /// Picks the highest-priority `pending` rows that have a persisted `stream_url`
@@ -1095,6 +1333,16 @@ pub(crate) async fn pump_download_queue(
     use crate::download::events::DownloadEvent;
     use tauri::Emitter;
 
+    // WiFi-only gate (UR-053): when the user has restricted downloads to
+    // unmetered networks and we're on cellular (or can't tell), leave every
+    // pending row exactly as it is. They stay 'pending' and the Android
+    // network callback re-pumps us as soon as an acceptable network appears.
+    if !downloads_allowed_on_current_network(&app).await {
+        info!("[pump] Downloads paused: waiting for an unmetered network (WiFi-only enabled)");
+        let _ = app.emit("download-event", DownloadEvent::WaitingForNetwork);
+        return;
+    }
+
     let max_concurrent = {
         let manager = app.state::<DownloadManagerWrapper>();
         let manager = match manager.0.lock() {
@@ -1137,7 +1385,13 @@ pub(crate) async fn pump_download_queue(
 
         let candidates: Vec<(i64, String, String, String, String)> = match db_service
             .query_many(next_query, |row| {
-                Ok((row.get(0)?, row.get(1)?, row.get(2)?, row.get(3)?, row.get(4)?))
+                Ok((
+                    row.get(0)?,
+                    row.get(1)?,
+                    row.get(2)?,
+                    row.get(3)?,
+                    row.get(4)?,
+                ))
             })
             .await
         {
@@ -1189,7 +1443,10 @@ pub(crate) async fn pump_download_queue(
             vec![QueryParam::Int64(download_id)],
         );
         if let Err(e) = db_service.execute(update_query).await {
-            error!("[pump] Failed to mark download {} downloading: {}", download_id, e);
+            error!(
+                "[pump] Failed to mark download {} downloading: {}",
+                download_id, e
+            );
             if let Ok(mut a) = active_downloads.lock() {
                 a.remove(&download_id);
             }
@@ -1228,8 +1485,8 @@ fn spawn_download_worker(
     target_path: std::path::PathBuf,
     active_downloads: Arc<Mutex<std::collections::HashSet<i64>>>,
 ) {
-    use crate::download::{DownloadTask, DownloadWorker};
     use crate::download::events::DownloadEvent;
+    use crate::download::{DownloadTask, DownloadWorker};
     use tauri::Emitter;
 
     let task = DownloadTask {
@@ -1265,7 +1522,11 @@ fn spawn_download_worker(
         // Free the slot before pumping so the next download can take it.
         if let Ok(mut active) = active_downloads.lock() {
             active.remove(&download_id);
-            debug!("   Unregistered download {}. Active downloads: {}", download_id, active.len());
+            debug!(
+                "   Unregistered download {}. Active downloads: {}",
+                download_id,
+                active.len()
+            );
         }
 
         // The pump runs downloads in the background, so the terminal status MUST
@@ -1281,7 +1542,10 @@ fn spawn_download_worker(
             let database = match db.0.lock() {
                 Ok(d) => d,
                 Err(e) => {
-                    error!("[pump] Failed to lock database after download {}: {}", download_id, e);
+                    error!(
+                        "[pump] Failed to lock database after download {}: {}",
+                        download_id, e
+                    );
                     return;
                 }
             };
@@ -1290,7 +1554,10 @@ fn spawn_download_worker(
 
         match result {
             Ok(res) => {
-                info!("Download completed successfully: {} bytes", res.bytes_downloaded);
+                info!(
+                    "Download completed successfully: {} bytes",
+                    res.bytes_downloaded
+                );
                 let file_path = target_path.to_string_lossy().to_string();
 
                 let update = Query::with_params(
@@ -1305,7 +1572,10 @@ fn spawn_download_worker(
                     ],
                 );
                 if let Err(e) = db_service.execute(update).await {
-                    error!("[pump] Failed to persist completed status for download {}: {}", download_id, e);
+                    error!(
+                        "[pump] Failed to persist completed status for download {}: {}",
+                        download_id, e
+                    );
                 }
 
                 let completed_event = DownloadEvent::Completed {
@@ -1329,7 +1599,10 @@ fn spawn_download_worker(
                     ],
                 );
                 if let Err(db_err) = db_service.execute(update).await {
-                    error!("[pump] Failed to persist failed status for download {}: {}", download_id, db_err);
+                    error!(
+                        "[pump] Failed to persist failed status for download {}: {}",
+                        download_id, db_err
+                    );
                 }
 
                 let failed_event = DownloadEvent::Failed {
@@ -1352,7 +1625,10 @@ fn spawn_download_worker(
 /// Delete a completed download
 #[tauri::command]
 #[specta::specta]
-pub async fn delete_download(db: State<'_, DatabaseWrapper>, download_id: i64) -> Result<(), String> {
+pub async fn delete_download(
+    db: State<'_, DatabaseWrapper>,
+    download_id: i64,
+) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -1376,7 +1652,10 @@ pub async fn delete_download(db: State<'_, DatabaseWrapper>, download_id: i64) -
         vec![QueryParam::Int64(download_id)],
     );
 
-    db_service.execute(delete_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(delete_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Delete actual file if exists
     if let Some(path) = file_path {
@@ -1413,8 +1692,12 @@ fn map_download_row(row: &rusqlite::Row) -> rusqlite::Result<DownloadInfo> {
         episode_number: row.get(20)?,
         season_number: row.get(21)?,
         quality_preset: row.get(22)?,
-        media_type: row.get::<_, Option<String>>(23)?.unwrap_or_else(|| "audio".to_string()),
-        download_source: row.get::<_, Option<String>>(24)?.unwrap_or_else(|| "user".to_string()),
+        media_type: row
+            .get::<_, Option<String>>(23)?
+            .unwrap_or_else(|| "audio".to_string()),
+        download_source: row
+            .get::<_, Option<String>>(24)?
+            .unwrap_or_else(|| "user".to_string()),
     })
 }
 
@@ -1500,7 +1783,10 @@ pub async fn get_download_storage_stats(
 /// Delete all downloads for a user
 #[tauri::command]
 #[specta::specta]
-pub async fn delete_all_downloads(db: State<'_, DatabaseWrapper>, user_id: String) -> Result<i64, String> {
+pub async fn delete_all_downloads(
+    db: State<'_, DatabaseWrapper>,
+    user_id: String,
+) -> Result<i64, String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -1598,7 +1884,10 @@ pub async fn delete_album_downloads(
         "SELECT d.file_path FROM downloads d
          JOIN items i ON d.item_id = i.id
          WHERE d.user_id = ? AND i.album_id = ? AND d.status = 'completed'",
-        vec![QueryParam::String(user_id.clone()), QueryParam::String(album_id.clone())],
+        vec![
+            QueryParam::String(user_id.clone()),
+            QueryParam::String(album_id.clone()),
+        ],
     );
 
     let file_paths: Vec<String> = db_service
@@ -1626,6 +1915,76 @@ pub async fn delete_album_downloads(
     Ok(deleted_count as i64)
 }
 
+/// Remove every completed download at or under a container item.
+///
+/// Works at any level of the Downloaded browse: a leaf (removes just that
+/// download), an album/season/series (removes all downloaded descendants linked
+/// via album_id/season_id/series_id/parent_id). Deletes the DB rows and the
+/// on-disk files. Returns the number of downloads removed. Idempotent.
+///
+/// TRACES: UR-055 | DR-083
+#[tauri::command]
+#[specta::specta]
+pub async fn delete_downloads_under(
+    db: State<'_, DatabaseWrapper>,
+    item_id: String,
+    user_id: String,
+) -> Result<i64, String> {
+    let db_service = {
+        let database = db.0.lock().map_err(|e| e.to_string())?;
+        Arc::new(database.service())
+    };
+
+    // The item itself, or any child linked to it by container id.
+    const SCOPE: &str = "d.user_id = ? AND d.status = 'completed'
+         AND (
+             d.item_id = ?
+             OR d.item_id IN (
+                 SELECT c.id FROM items c
+                 WHERE c.album_id = ? OR c.season_id = ? OR c.series_id = ? OR c.parent_id = ?
+             )
+         )";
+
+    let file_query = Query::with_params(
+        &format!("SELECT d.file_path FROM downloads d WHERE {SCOPE}"),
+        vec![
+            QueryParam::String(user_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+        ],
+    );
+    let file_paths: Vec<String> = db_service
+        .query_many(file_query, |row| row.get(0))
+        .await
+        .map_err(|e| e.to_string())?;
+
+    let delete_query = Query::with_params(
+        &format!("DELETE FROM downloads WHERE id IN (SELECT d.id FROM downloads d WHERE {SCOPE})"),
+        vec![
+            QueryParam::String(user_id),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id.clone()),
+            QueryParam::String(item_id),
+        ],
+    );
+    let deleted_count = db_service
+        .execute(delete_query)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    for path in file_paths {
+        let _ = std::fs::remove_file(&path);
+        let _ = std::fs::remove_file(format!("{}.part", path));
+    }
+
+    Ok(deleted_count as i64)
+}
+
 /// Download manager statistics
 #[derive(specta::Type, Debug, Clone, serde::Serialize)]
 pub struct DownloadManagerStats {
@@ -1665,7 +2024,6 @@ pub async fn set_max_concurrent_downloads(
     Ok(())
 }
 
-
 // TRACES: UR-011, UR-018 | DR-015, DR-018 | UT-042, UT-043
 #[cfg(test)]
 mod tests {
@@ -1834,7 +2192,10 @@ mod tests {
             )
             .unwrap();
 
-        assert_eq!(status, "pending", "Status should be reset to pending after UPSERT");
+        assert_eq!(
+            status, "pending",
+            "Status should be reset to pending after UPSERT"
+        );
     }
 
     #[test]
@@ -2069,7 +2430,11 @@ mod tests {
         .unwrap();
 
         let status: String = conn
-            .query_row("SELECT status FROM downloads WHERE id = ?1", params![id], |row| row.get(0))
+            .query_row(
+                "SELECT status FROM downloads WHERE id = ?1",
+                params![id],
+                |row| row.get(0),
+            )
             .unwrap();
         assert_eq!(status, "downloading");
 

src-tauri/src/commands/download/pinning.rs

@@ -1,4 +1,6 @@
 //! Pinning commands - protect an item's cached metadata from cache clearing.
+//!
+//! TRACES: UR-044 | DR-056
 
 use std::sync::Arc;
 use tauri::State;
@@ -45,7 +47,10 @@ pub async fn unpin_item(db: State<'_, DatabaseWrapper>, item_id: String) -> Resu
 /// Check if an item is pinned
 #[tauri::command]
 #[specta::specta]
-pub async fn is_item_pinned(db: State<'_, DatabaseWrapper>, item_id: String) -> Result<bool, String> {
+pub async fn is_item_pinned(
+    db: State<'_, DatabaseWrapper>,
+    item_id: String,
+) -> Result<bool, String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())

src-tauri/src/commands/download/smart_cache.rs

@@ -1,7 +1,9 @@
 //! Smart-cache statistics/config and album recommendation commands.
+//!
+//! TRACES: UR-045 | DR-057
 
-use std::sync::Arc;
 use log::info;
+use std::sync::Arc;
 use tauri::State;
 
 use crate::commands::{DatabaseWrapper, SmartCacheWrapper};

src-tauri/src/commands/mod.rs

@@ -25,11 +25,11 @@ pub use device::*;
 pub use download::*;
 pub use offline::*;
 pub use playback_mode::*;
-#[allow(unused_imports)]  // Used when playback_reporting is fully integrated
+#[allow(unused_imports)] // Used when playback_reporting is fully integrated
 pub use playback_reporting::*;
 pub use player::*;
 pub use playlist::*;
-pub use repository::{*, RepositoryManager, RepositoryManagerWrapper};
+pub use repository::{RepositoryManager, RepositoryManagerWrapper, *};
 pub use sessions::*;
 pub use storage::*;
 pub use sync::*;

src-tauri/src/commands/playback_mode.rs

@@ -1,3 +1,7 @@
+//! Playback-mode transfer commands (local ↔ remote).
+//!
+//! TRACES: UR-010 | DR-059
+
 use std::sync::Arc;
 use tauri::State;
 
@@ -105,21 +109,30 @@ pub async fn playback_mode_get_remote_status(
             let controller = player.0.lock().await;
             let client_arc = controller.jellyfin_client();
             let client_opt = client_arc.lock().map_err(|e| e.to_string())?;
-            client_opt.as_ref().ok_or("Jellyfin client not configured")?.clone()
+            client_opt
+                .as_ref()
+                .ok_or("Jellyfin client not configured")?
+                .clone()
         };
 
         // Get session info
         match client.get_session(&session_id).await {
             Ok(Some(session)) => {
-                let position_ticks = session.play_state.as_ref()
+                let position_ticks = session
+                    .play_state
+                    .as_ref()
                     .and_then(|ps| ps.position_ticks)
                     .unwrap_or(0);
 
-                let duration_ticks = session.now_playing_item.as_ref()
+                let duration_ticks = session
+                    .now_playing_item
+                    .as_ref()
                     .and_then(|item| item.run_time_ticks)
                     .unwrap_or(0);
 
-                let is_paused = session.play_state.as_ref()
+                let is_paused = session
+                    .play_state
+                    .as_ref()
                     .and_then(|ps| ps.is_paused)
                     .unwrap_or(true);
 
@@ -224,17 +237,20 @@ mod tests {
     fn test_playback_mode_deserialization_from_frontend() {
         // Test what frontend sends for Idle mode
         let idle_json = r#"{"type":"idle"}"#;
-        let mode: PlaybackMode = serde_json::from_str(idle_json).expect("Failed to deserialize idle");
+        let mode: PlaybackMode =
+            serde_json::from_str(idle_json).expect("Failed to deserialize idle");
         assert_eq!(mode, PlaybackMode::Idle);
 
         // Test what frontend sends for Local mode
         let local_json = r#"{"type":"local"}"#;
-        let mode: PlaybackMode = serde_json::from_str(local_json).expect("Failed to deserialize local");
+        let mode: PlaybackMode =
+            serde_json::from_str(local_json).expect("Failed to deserialize local");
         assert_eq!(mode, PlaybackMode::Local);
 
         // Test what frontend sends for Remote mode
         let remote_json = r#"{"type":"remote","session_id":"session-123"}"#;
-        let mode: PlaybackMode = serde_json::from_str(remote_json).expect("Failed to deserialize remote");
+        let mode: PlaybackMode =
+            serde_json::from_str(remote_json).expect("Failed to deserialize remote");
         match mode {
             PlaybackMode::Remote { session_id } => assert_eq!(session_id, "session-123"),
             _ => panic!("Expected Remote mode"),
@@ -247,8 +263,8 @@ mod tests {
 
         // Test Search context (the recently fixed issue)
         let search_json = r#"{"type":"search","searchQuery":"test query"}"#;
-        let context: PlayTracksContext = serde_json::from_str(search_json)
-            .expect("Failed to deserialize search context");
+        let context: PlayTracksContext =
+            serde_json::from_str(search_json).expect("Failed to deserialize search context");
         match context {
             PlayTracksContext::Search { search_query } => {
                 assert_eq!(search_query, "test query");
@@ -257,11 +273,15 @@ mod tests {
         }
 
         // Test Playlist context
-        let playlist_json = r#"{"type":"playlist","playlistId":"pl-123","playlistName":"My Playlist"}"#;
-        let context: PlayTracksContext = serde_json::from_str(playlist_json)
-            .expect("Failed to deserialize playlist context");
+        let playlist_json =
+            r#"{"type":"playlist","playlistId":"pl-123","playlistName":"My Playlist"}"#;
+        let context: PlayTracksContext =
+            serde_json::from_str(playlist_json).expect("Failed to deserialize playlist context");
         match context {
-            PlayTracksContext::Playlist { playlist_id, playlist_name } => {
+            PlayTracksContext::Playlist {
+                playlist_id,
+                playlist_name,
+            } => {
                 assert_eq!(playlist_id, "pl-123");
                 assert_eq!(playlist_name, "My Playlist");
             }
@@ -270,8 +290,8 @@ mod tests {
 
         // Test Custom context
         let custom_json = r#"{"type":"custom","label":"Custom Queue"}"#;
-        let context: PlayTracksContext = serde_json::from_str(custom_json)
-            .expect("Failed to deserialize custom context");
+        let context: PlayTracksContext =
+            serde_json::from_str(custom_json).expect("Failed to deserialize custom context");
         match context {
             PlayTracksContext::Custom { label } => {
                 assert_eq!(label, Some("Custom Queue".to_string()));

src-tauri/src/commands/playback_reporting.rs

@@ -1,5 +1,7 @@
 //! Tauri commands for playback reporting operations
 //!
+//! TRACES: UR-025, UR-019 | IR-015, JA-010, JA-011, JA-012 | DR-028
+//!
 //! These commands provide frontend access to the Rust playback reporting system,
 //! replacing the TypeScript implementation with native Rust reporting.
 //!
@@ -16,7 +18,7 @@ use crate::commands::connectivity::ConnectivityMonitorWrapper;
 use crate::commands::storage::DatabaseWrapper;
 use crate::jellyfin::client::JellyfinClient;
 use crate::jellyfin::JellyfinConfig;
-use crate::playback_reporting::{PlaybackReporter, PlaybackOperation, PlaybackContext};
+use crate::playback_reporting::{PlaybackContext, PlaybackOperation, PlaybackReporter};
 use crate::utils::conversions::seconds_to_ticks;
 
 /// Tauri state wrapper for PlaybackReporter
@@ -61,7 +63,10 @@ pub async fn playback_reporter_init(
     // Store in wrapper
     *reporter_wrapper.0.lock().await = Some(reporter);
 
-    log::info!("[PlaybackReporter] Initialized successfully for user: {}", user_id);
+    log::info!(
+        "[PlaybackReporter] Initialized successfully for user: {}",
+        user_id
+    );
     Ok(())
 }
 
@@ -205,7 +210,12 @@ mod tests {
         };
 
         // Verify enum variant can be created and pattern matched
-        if let PlaybackOperation::Start { item_id, position_ticks, context } = operation {
+        if let PlaybackOperation::Start {
+            item_id,
+            position_ticks,
+            context,
+        } = operation
+        {
             assert_eq!(item_id, "item-123");
             assert_eq!(position_ticks, 15_000_000);
             assert!(context.is_some());
@@ -225,7 +235,10 @@ mod tests {
             context: None,
         };
 
-        if let PlaybackOperation::Start { item_id, context, .. } = operation {
+        if let PlaybackOperation::Start {
+            item_id, context, ..
+        } = operation
+        {
             assert_eq!(item_id, "item-789");
             assert!(context.is_none());
         } else {
@@ -241,7 +254,12 @@ mod tests {
             is_paused: true,
         };
 
-        if let PlaybackOperation::Progress { item_id, position_ticks, is_paused } = operation {
+        if let PlaybackOperation::Progress {
+            item_id,
+            position_ticks,
+            is_paused,
+        } = operation
+        {
             assert_eq!(item_id, "item-999");
             assert_eq!(position_ticks, 30_000_000);
             assert!(is_paused);
@@ -272,7 +290,11 @@ mod tests {
             position_ticks: 120_000_000,
         };
 
-        if let PlaybackOperation::Stopped { item_id, position_ticks } = operation {
+        if let PlaybackOperation::Stopped {
+            item_id,
+            position_ticks,
+        } = operation
+        {
             assert_eq!(item_id, "item-111");
             assert_eq!(position_ticks, 120_000_000);
         } else {
@@ -364,7 +386,10 @@ mod tests {
         };
 
         let cloned = operation.clone();
-        if let PlaybackOperation::Progress { item_id, is_paused, .. } = cloned {
+        if let PlaybackOperation::Progress {
+            item_id, is_paused, ..
+        } = cloned
+        {
             assert_eq!(item_id, "item-clone");
             assert!(is_paused);
         } else {

src-tauri/src/commands/player/queue.rs

@@ -1,4 +1,6 @@
 //! Queue manipulation commands (add / remove / move / skip).
+//!
+//! TRACES: UR-015 | DR-005, DR-020
 
 use std::path::PathBuf;
 
@@ -150,16 +152,25 @@ pub async fn player_add_track_by_id(
 ) -> Result<QueueStatus, String> {
     use crate::player::queue::AddPosition;
 
-    info!("player_add_track_by_id called: track_id={}, position={}",
-          request.track_id, request.position);
+    info!(
+        "player_add_track_by_id called: track_id={}, position={}",
+        request.track_id, request.position
+    );
 
     // Get repository (hybrid - supports offline/online)
-    let repository = repository_manager.0.get(&repository_handle)
+    let repository = repository_manager
+        .0
+        .get(&repository_handle)
         .ok_or("Repository not found - user may need to log in")?;
 
     // Fetch track metadata via repository
-    info!("Fetching metadata for track {} via repository", request.track_id);
-    let track = repository.get_item(&request.track_id).await
+    info!(
+        "Fetching metadata for track {} via repository",
+        request.track_id
+    );
+    let track = repository
+        .get_item(&request.track_id)
+        .await
         .map_err(|e| format!("Failed to fetch track metadata: {}", e))?;
 
     // Check for local download first
@@ -173,7 +184,9 @@ pub async fn player_add_track_by_id(
         }
     } else {
         // Get stream URL from repository (works online/offline)
-        let stream_url = repository.get_audio_stream_url(&track.id).await
+        let stream_url = repository
+            .get_audio_stream_url(&track.id)
+            .await
             .map_err(|e| format!("Failed to get stream URL for {}: {}", track.name, e))?;
 
         MediaSource::Remote {
@@ -188,23 +201,31 @@ pub async fn player_add_track_by_id(
         id: track.id.clone(),
         title: track.name.clone(),
         name: Some(track.name.clone()), // Frontend compatibility
-        artist: track.album_artist.clone().or_else(|| track.artists.as_ref().and_then(|a| a.first().cloned())),
+        artist: track
+            .album_artist
+            .clone()
+            .or_else(|| track.artists.as_ref().and_then(|a| a.first().cloned())),
         album: track.album_name.clone(),
         album_name: track.album_name.clone(), // Frontend compatibility
         album_id: track.album_id.clone(),
         artist_items: track.artist_items.clone(), // For clickable artist links
-        artists: track.artists.clone(), // Fallback artist info
+        artists: track.artists.clone(),           // Fallback artist info
         primary_image_tag: track.primary_image_tag.clone(), // For frontend image display
+        image_id: track.primary_image_tag.clone(),
         item_type: Some(track.item_type.clone()), // Frontend compatibility
         playlist_id: None,
         duration: track.runtime_ticks.map(|t| t as f64 / 10_000_000.0),
         artwork_url: primary_image_tag_for_url.and_then(|tag| {
             track.album_id.as_ref().map(|album_id| {
-                repository.get_image_url(album_id, ImageType::Primary, Some(ImageOptions {
-                    max_width: Some(300),
-                    tag: Some(tag),
-                    ..Default::default()
-                }))
+                repository.get_image_url(
+                    album_id,
+                    ImageType::Primary,
+                    Some(ImageOptions {
+                        max_width: Some(300),
+                        tag: Some(tag),
+                        ..Default::default()
+                    }),
+                )
             })
         }),
         media_type: MediaType::Audio,
@@ -250,18 +271,25 @@ pub async fn player_add_tracks_by_ids(
 ) -> Result<QueueStatus, String> {
     use crate::player::queue::AddPosition;
 
-    info!("player_add_tracks_by_ids called: {} tracks, position={}",
-          request.track_ids.len(), request.position);
+    info!(
+        "player_add_tracks_by_ids called: {} tracks, position={}",
+        request.track_ids.len(),
+        request.position
+    );
 
     // Get repository (hybrid - supports offline/online)
-    let repository = repository_manager.0.get(&repository_handle)
+    let repository = repository_manager
+        .0
+        .get(&repository_handle)
         .ok_or("Repository not found - user may need to log in")?;
 
     // Fetch metadata and build MediaItems for all tracks
     let mut media_items = Vec::new();
     for track_id in &request.track_ids {
         info!("Fetching metadata for track {} via repository", track_id);
-        let track = repository.get_item(track_id).await
+        let track = repository
+            .get_item(track_id)
+            .await
             .map_err(|e| format!("Failed to fetch track metadata for {}: {}", track_id, e))?;
 
         // Check for local download first
@@ -275,7 +303,9 @@ pub async fn player_add_tracks_by_ids(
             }
         } else {
             // Get stream URL from repository (works online/offline)
-            let stream_url = repository.get_audio_stream_url(&track.id).await
+            let stream_url = repository
+                .get_audio_stream_url(&track.id)
+                .await
                 .map_err(|e| format!("Failed to get stream URL for {}: {}", track.name, e))?;
 
             MediaSource::Remote {
@@ -290,23 +320,31 @@ pub async fn player_add_tracks_by_ids(
             id: track.id.clone(),
             title: track.name.clone(),
             name: Some(track.name.clone()), // Frontend compatibility
-            artist: track.album_artist.clone().or_else(|| track.artists.as_ref().and_then(|a| a.first().cloned())),
+            artist: track
+                .album_artist
+                .clone()
+                .or_else(|| track.artists.as_ref().and_then(|a| a.first().cloned())),
             album: track.album_name.clone(),
             album_name: track.album_name.clone(), // Frontend compatibility
             album_id: track.album_id.clone(),
             artist_items: track.artist_items.clone(), // For clickable artist links
-            artists: track.artists.clone(), // Fallback artist info
+            artists: track.artists.clone(),           // Fallback artist info
             primary_image_tag: track.primary_image_tag.clone(), // For frontend image display
+            image_id: track.primary_image_tag.clone(),
             item_type: Some(track.item_type.clone()), // Frontend compatibility
             playlist_id: None,
             duration: track.runtime_ticks.map(|t| t as f64 / 10_000_000.0),
             artwork_url: primary_image_tag_for_url.and_then(|tag| {
                 track.album_id.as_ref().map(|album_id| {
-                    repository.get_image_url(album_id, ImageType::Primary, Some(ImageOptions {
-                        max_width: Some(300),
-                        tag: Some(tag),
-                        ..Default::default()
-                    }))
+                    repository.get_image_url(
+                        album_id,
+                        ImageType::Primary,
+                        Some(ImageOptions {
+                            max_width: Some(300),
+                            tag: Some(tag),
+                            ..Default::default()
+                        }),
+                    )
                 })
             }),
             media_type: MediaType::Audio,
@@ -339,7 +377,10 @@ pub async fn player_add_tracks_by_ids(
     drop(queue_lock);
     controller.emit_queue_changed();
 
-    info!("Successfully added {} tracks to queue", request.track_ids.len());
+    info!(
+        "Successfully added {} tracks to queue",
+        request.track_ids.len()
+    );
     Ok(result)
 }
 

src-tauri/src/commands/player/remote.rs

@@ -1,5 +1,7 @@
 //! Remote Jellyfin session control commands (casting to another device).
 //!
+//! TRACES: UR-010, UR-046 | IR-012, IR-028, JA-022, JA-023, JA-025, JA-026 | DR-037, DR-058
+//!
 //! These thin command adapters forward control actions to the active Jellyfin
 //! session via the player's configured `JellyfinClient`.
 
@@ -17,22 +19,36 @@ pub async fn remote_play_on_session(
     item_ids: Vec<String>,
     start_index: usize,
 ) -> Result<(), String> {
-    log::info!("[RemoteSession] Playing {} items on session {} (start index: {})", item_ids.len(), session_id, start_index);
+    log::info!(
+        "[RemoteSession] Playing {} items on session {} (start index: {})",
+        item_ids.len(),
+        session_id,
+        start_index
+    );
     log::info!("[RemoteSession] Item IDs: {:?}", item_ids);
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
         log::info!("[RemoteSession] Jellyfin client IS configured, calling play_on_session");
-        client.play_on_session(session_id, item_ids, start_index, None).await?;
+        client
+            .play_on_session(session_id, item_ids, start_index, None)
+            .await?;
         log::info!("[RemoteSession] Successfully started playback on remote session");
         Ok(())
     } else {
         log::error!("[RemoteSession] Jellyfin client is NOT configured! User needs to log out/in or restart app");
-        Err("Jellyfin client not configured - please restart the app or log out and log back in".to_string())
+        Err(
+            "Jellyfin client not configured - please restart the app or log out and log back in"
+                .to_string(),
+        )
     }
 }
 
@@ -44,11 +60,19 @@ pub async fn remote_send_command(
     session_id: String,
     command: String,
 ) -> Result<(), String> {
-    log::info!("[RemoteSession] Sending command '{}' to session {}", command, session_id);
+    log::info!(
+        "[RemoteSession] Sending command '{}' to session {}",
+        command,
+        session_id
+    );
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -68,11 +92,19 @@ pub async fn remote_session_seek(
     session_id: String,
     position_ticks: i64,
 ) -> Result<(), String> {
-    log::info!("[RemoteSession] Seeking to {} ticks on session {}", position_ticks, session_id);
+    log::info!(
+        "[RemoteSession] Seeking to {} ticks on session {}",
+        position_ticks,
+        session_id
+    );
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -92,11 +124,19 @@ pub async fn remote_session_set_volume(
     session_id: String,
     volume: i32,
 ) -> Result<(), String> {
-    log::info!("[RemoteSession] Setting volume to {} on session {}", volume, session_id);
+    log::info!(
+        "[RemoteSession] Setting volume to {} on session {}",
+        volume,
+        session_id
+    );
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -119,7 +159,11 @@ pub async fn remote_session_toggle_mute(
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -145,7 +189,11 @@ pub async fn lms_get_sync_groups(
 ) -> Result<Vec<LmsSyncGroup>, String> {
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -164,11 +212,19 @@ pub async fn lms_create_sync_group(
     master_mac: String,
     slave_macs: Vec<String>,
 ) -> Result<(), String> {
-    log::info!("[LmsSync] Fusing zones: master={}, slaves={:?}", master_mac, slave_macs);
+    log::info!(
+        "[LmsSync] Fusing zones: master={}, slaves={:?}",
+        master_mac,
+        slave_macs
+    );
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -189,7 +245,11 @@ pub async fn lms_unsync_player(
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {
@@ -210,7 +270,11 @@ pub async fn lms_dissolve_sync_group(
 
     let client_opt = {
         let controller = player.0.lock().await;
-        controller.jellyfin_client().lock().map_err(|e| e.to_string())?.clone()
+        controller
+            .jellyfin_client()
+            .lock()
+            .map_err(|e| e.to_string())?
+            .clone()
     };
 
     if let Some(client) = client_opt {

src-tauri/src/commands/player/session.rs

@@ -1,5 +1,7 @@
 //! Media session state commands.
 //!
+//! TRACES: UR-005 | DR-009
+//!
 //! Read and dismiss the current media session (the Now Playing surface backing
 //! lockscreen/notification controls).
 

src-tauri/src/commands/player/settings.rs

@@ -1,10 +1,12 @@
 //! Audio and video playback settings commands.
+//!
+//! TRACES: UR-022, UR-027, UR-031, UR-032, UR-033 | DR-025, DR-030, DR-034, DR-035, DR-036, IR-020
 
 use tauri::State;
 
 use super::{PlayerStateWrapper, VideoSettingsWrapper};
 use crate::player::AutoplaySettings;
-use crate::settings::{AudioSettings, VideoSettings};
+use crate::settings::{AudioSettings, EqPreset, VideoSettings};
 
 #[tauri::command]
 #[specta::specta]
@@ -12,13 +14,32 @@ pub async fn player_set_audio_settings(
     player: State<'_, PlayerStateWrapper>,
     settings: AudioSettings,
 ) -> Result<AudioSettings, String> {
+    // Validate/normalise domain values before applying: clamp crossfade to its
+    // range and normalise the equalizer band vector (length + gain clamps).
+    let validated = settings
+        .with_crossfade_clamped()
+        .with_equalizer_normalised();
     let mut controller = player.0.lock().await;
     controller
-        .set_audio_settings(&settings)
+        .set_audio_settings(&validated)
         .map_err(|e| e.to_string())?;
     Ok(controller.audio_settings())
 }
 
+/// The built-in equalizer presets and their per-band gain curves (dB), for the
+/// settings UI. The curve numbers are domain data defined by the band layout,
+/// so the frontend reads them here rather than encoding them.
+///
+/// TRACES: UR-027 | DR-030
+#[tauri::command]
+#[specta::specta]
+pub async fn player_get_eq_presets() -> Result<Vec<(EqPreset, Vec<f32>)>, String> {
+    Ok(EqPreset::ALL
+        .iter()
+        .map(|p| (*p, p.gains().to_vec()))
+        .collect())
+}
+
 #[tauri::command]
 #[specta::specta]
 pub async fn player_get_audio_settings(

src-tauri/src/commands/player/timers.rs

@@ -1,5 +1,7 @@
 //! Sleep-timer and autoplay commands.
 //!
+//! TRACES: UR-026, UR-023 | DR-029, DR-047, DR-049
+//!
 //! Thin command adapters over `PlayerController`'s sleep-timer and autoplay
 //! logic, plus persistence of autoplay settings to the database.
 
@@ -7,8 +9,8 @@ use std::sync::Arc;
 use tauri::State;
 
 use super::{
-    create_media_item, get_player_status, DatabaseWrapper, PlayItemRequest, PlayerStatus,
-    PlayerStateWrapper,
+    create_media_item, get_player_status, DatabaseWrapper, PlayItemRequest, PlayerStateWrapper,
+    PlayerStatus,
 };
 use crate::player::{AutoplaySettings, SleepTimerMode, SleepTimerState};
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
@@ -127,7 +129,9 @@ pub async fn player_play_next_episode(
     let media_item = create_media_item(item, Some(&db)).await?;
 
     let controller = player.0.lock().await;
-    controller.play_item(media_item).map_err(|e| e.to_string())?;
+    controller
+        .play_item(media_item)
+        .map_err(|e| e.to_string())?;
 
     Ok(get_player_status(&controller))
 }
@@ -164,7 +168,10 @@ pub async fn player_on_playback_ended(
             if let Some(repo) = repo {
                 controller.on_video_playback_ended(id, repo).await?
             } else {
-                log::warn!("[Autoplay] No repository available for video autoplay (itemId: {})", id);
+                log::warn!(
+                    "[Autoplay] No repository available for video autoplay (itemId: {})",
+                    id
+                );
                 AutoplayDecision::Stop
             }
         } else {

src-tauri/src/commands/playlist.rs

@@ -6,8 +6,8 @@
 use log::debug;
 use tauri::State;
 
-use crate::repository::{MediaRepository, types::*};
 use super::repository::RepositoryManagerWrapper;
+use crate::repository::{types::*, MediaRepository};
 
 /// Create a new playlist
 #[tauri::command]
@@ -21,7 +21,8 @@ pub async fn playlist_create(
     debug!("[PLAYLIST] create called: name={}", name);
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
     let ids = item_ids.unwrap_or_default();
-    repo.as_ref().create_playlist(&name, &ids)
+    repo.as_ref()
+        .create_playlist(&name, &ids)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -36,7 +37,8 @@ pub async fn playlist_delete(
 ) -> Result<(), String> {
     debug!("[PLAYLIST] delete called: id={}", playlist_id);
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().delete_playlist(&playlist_id)
+    repo.as_ref()
+        .delete_playlist(&playlist_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -50,9 +52,13 @@ pub async fn playlist_rename(
     playlist_id: String,
     name: String,
 ) -> Result<(), String> {
-    debug!("[PLAYLIST] rename called: id={}, name={}", playlist_id, name);
+    debug!(
+        "[PLAYLIST] rename called: id={}, name={}",
+        playlist_id, name
+    );
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().rename_playlist(&playlist_id, &name)
+    repo.as_ref()
+        .rename_playlist(&playlist_id, &name)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -67,7 +73,8 @@ pub async fn playlist_get_items(
 ) -> Result<Vec<PlaylistEntry>, String> {
     debug!("[PLAYLIST] get_items called: id={}", playlist_id);
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_playlist_items(&playlist_id)
+    repo.as_ref()
+        .get_playlist_items(&playlist_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -81,9 +88,14 @@ pub async fn playlist_add_items(
     playlist_id: String,
     item_ids: Vec<String>,
 ) -> Result<(), String> {
-    debug!("[PLAYLIST] add_items called: id={}, count={}", playlist_id, item_ids.len());
+    debug!(
+        "[PLAYLIST] add_items called: id={}, count={}",
+        playlist_id,
+        item_ids.len()
+    );
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().add_to_playlist(&playlist_id, &item_ids)
+    repo.as_ref()
+        .add_to_playlist(&playlist_id, &item_ids)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -97,9 +109,14 @@ pub async fn playlist_remove_items(
     playlist_id: String,
     entry_ids: Vec<String>,
 ) -> Result<(), String> {
-    debug!("[PLAYLIST] remove_items called: id={}, count={}", playlist_id, entry_ids.len());
+    debug!(
+        "[PLAYLIST] remove_items called: id={}, count={}",
+        playlist_id,
+        entry_ids.len()
+    );
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().remove_from_playlist(&playlist_id, &entry_ids)
+    repo.as_ref()
+        .remove_from_playlist(&playlist_id, &entry_ids)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -114,9 +131,13 @@ pub async fn playlist_move_item(
     item_id: String,
     new_index: u32,
 ) -> Result<(), String> {
-    debug!("[PLAYLIST] move_item called: playlist={}, item={}, index={}", playlist_id, item_id, new_index);
+    debug!(
+        "[PLAYLIST] move_item called: playlist={}, item={}, index={}",
+        playlist_id, item_id, new_index
+    );
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().move_playlist_item(&playlist_id, &item_id, new_index)
+    repo.as_ref()
+        .move_playlist_item(&playlist_id, &item_id, new_index)
         .await
         .map_err(|e| format!("{:?}", e))
 }

src-tauri/src/commands/repository.rs

@@ -13,7 +13,9 @@ use tauri::{AppHandle, Emitter, State};
 use uuid::Uuid;
 
 use crate::jellyfin::HttpClient;
-use crate::repository::{HybridRepository, MediaRepository, OnlineRepository, OfflineRepository, types::*};
+use crate::repository::{
+    types::*, HybridRepository, MediaRepository, OfflineRepository, OnlineRepository,
+};
 
 /// Repository handle manager
 pub struct RepositoryManager {
@@ -81,8 +83,13 @@ pub async fn repository_create(
 
     // Create online repository wired to connectivity reporting
     debug!("[REPO] Creating online repository...");
-    let online = OnlineRepository::new(Arc::new(http_client), server_url, user_id.clone(), access_token)
-        .with_connectivity(connectivity_reporter);
+    let online = OnlineRepository::new(
+        Arc::new(http_client),
+        server_url,
+        user_id.clone(),
+        access_token,
+    )
+    .with_connectivity(connectivity_reporter);
     debug!("[REPO] Online repository created");
 
     // Create offline repository with async-safe database service
@@ -151,12 +158,10 @@ pub async fn repository_get_libraries(
         "Repository not found".to_string()
     })?;
     debug!("[REPO] Repository found, fetching libraries...");
-    repo.as_ref().get_libraries()
-        .await
-        .map_err(|e| {
-            error!("[REPO] Error fetching libraries: {:?}", e);
-            format!("{:?}", e)
-        })
+    repo.as_ref().get_libraries().await.map_err(|e| {
+        error!("[REPO] Error fetching libraries: {:?}", e);
+        format!("{:?}", e)
+    })
 }
 
 /// Get items in a container (library, folder, album, etc.)
@@ -169,7 +174,8 @@ pub async fn repository_get_items(
     options: Option<GetItemsOptions>,
 ) -> Result<SearchResult, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_items(&parent_id, options)
+    repo.as_ref()
+        .get_items(&parent_id, options)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -183,7 +189,58 @@ pub async fn repository_get_item(
     item_id: String,
 ) -> Result<MediaItem, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_item(&item_id)
+    repo.as_ref()
+        .get_item(&item_id)
+        .await
+        .map_err(|e| format!("{:?}", e))
+}
+
+/// Downloaded-only browse: libraries that contain downloaded content.
+///
+/// Backs the Downloads "Downloaded" surface. Never merges server results and is
+/// authoritative — an empty list means nothing is downloaded.
+///
+/// TRACES: UR-055 | DR-082
+#[tauri::command]
+#[specta::specta]
+pub async fn repository_get_downloaded_libraries(
+    manager: State<'_, RepositoryManagerWrapper>,
+    handle: String,
+) -> Result<Vec<Library>, String> {
+    let repo = manager.0.get(&handle).ok_or("Repository not found")?;
+    repo.get_downloaded_libraries()
+        .await
+        .map_err(|e| format!("{:?}", e))
+}
+
+/// Downloaded-only browse: items under a container that are on the device.
+///
+/// TRACES: UR-055 | DR-082, DR-083
+#[tauri::command]
+#[specta::specta]
+pub async fn repository_get_downloaded_items(
+    manager: State<'_, RepositoryManagerWrapper>,
+    handle: String,
+    parent_id: String,
+    options: Option<GetItemsOptions>,
+) -> Result<SearchResult, String> {
+    let repo = manager.0.get(&handle).ok_or("Repository not found")?;
+    repo.get_downloaded_items(&parent_id, options)
+        .await
+        .map_err(|e| format!("{:?}", e))
+}
+
+/// On-disk usage of downloaded content (device total, per-item/container bytes).
+///
+/// TRACES: UR-056 | DR-085
+#[tauri::command]
+#[specta::specta]
+pub async fn repository_get_download_disk_usage(
+    manager: State<'_, RepositoryManagerWrapper>,
+    handle: String,
+) -> Result<DownloadDiskUsage, String> {
+    let repo = manager.0.get(&handle).ok_or("Repository not found")?;
+    repo.get_download_disk_usage()
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -200,7 +257,8 @@ pub async fn repository_jray_actors_at(
     t: f64,
 ) -> Result<Vec<crate::repository::JRayActor>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_jray_actors(&item_id, t)
+    repo.as_ref()
+        .get_jray_actors(&item_id, t)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -215,7 +273,8 @@ pub async fn repository_get_latest_items(
     limit: Option<usize>,
 ) -> Result<Vec<MediaItem>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_latest_items(&parent_id, limit)
+    repo.as_ref()
+        .get_latest_items(&parent_id, limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -235,7 +294,8 @@ pub async fn repository_get_resume_items(
         "Repository not found".to_string()
     })?;
     debug!("[REPO] Repository found, fetching resume items...");
-    repo.as_ref().get_resume_items(parent_id.as_deref(), limit)
+    repo.as_ref()
+        .get_resume_items(parent_id.as_deref(), limit)
         .await
         .map_err(|e| {
             error!("[REPO] Error fetching resume items: {:?}", e);
@@ -253,7 +313,8 @@ pub async fn repository_get_next_up_episodes(
     limit: Option<usize>,
 ) -> Result<Vec<MediaItem>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_next_up_episodes(series_id.as_deref(), limit)
+    repo.as_ref()
+        .get_next_up_episodes(series_id.as_deref(), limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -267,7 +328,8 @@ pub async fn repository_get_recently_played_audio(
     limit: Option<usize>,
 ) -> Result<Vec<MediaItem>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_recently_played_audio(limit)
+    repo.as_ref()
+        .get_recently_played_audio(limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -281,7 +343,8 @@ pub async fn repository_get_resume_movies(
     limit: Option<usize>,
 ) -> Result<Vec<MediaItem>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_resume_movies(limit)
+    repo.as_ref()
+        .get_resume_movies(limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -296,7 +359,8 @@ pub async fn repository_get_rediscover_albums(
     limit: Option<usize>,
 ) -> Result<Vec<MediaItem>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_rediscover_albums(parent_id.as_deref(), limit)
+    repo.as_ref()
+        .get_rediscover_albums(parent_id.as_deref(), limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -310,7 +374,8 @@ pub async fn repository_get_genres(
     parent_id: Option<String>,
 ) -> Result<Vec<Genre>, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_genres(parent_id.as_deref())
+    repo.as_ref()
+        .get_genres(parent_id.as_deref())
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -363,8 +428,7 @@ pub async fn repository_search(
     tauri::async_runtime::spawn(async move {
         match repo_bg.search_server_only(&query, options).await {
             Ok(server_result) => {
-                let merged =
-                    HybridRepository::merge_search_results(cache_for_merge, server_result);
+                let merged = HybridRepository::merge_search_results(cache_for_merge, server_result);
                 let event = SearchUpdateEvent {
                     request_id,
                     result: merged,
@@ -376,7 +440,10 @@ pub async fn repository_search(
             Err(e) => {
                 // Server failed — the cache results are already on screen, so
                 // just log. (Offline / unreachable server falls here.)
-                warn!("[Search] Server search failed, keeping cache results: {:?}", e);
+                warn!(
+                    "[Search] Server search failed, keeping cache results: {:?}",
+                    e
+                );
             }
         }
     });
@@ -393,7 +460,8 @@ pub async fn repository_get_playback_info(
     item_id: String,
 ) -> Result<PlaybackInfo, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_playback_info(&item_id)
+    repo.as_ref()
+        .get_playback_info(&item_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -421,6 +489,31 @@ pub async fn repository_get_video_stream_url(
         .map_err(|e| format!("{:?}", e))
 }
 
+/// Get an audio-only stream URL for a *video* item (background-audio handoff).
+///
+/// TRACES: UR-040 | JA-032 | UT-061
+#[tauri::command]
+#[specta::specta]
+pub async fn repository_get_audio_only_stream_url_for_video(
+    manager: State<'_, RepositoryManagerWrapper>,
+    handle: String,
+    item_id: String,
+    media_source_id: Option<String>,
+    start_time_seconds: Option<f64>,
+    audio_stream_index: Option<i32>,
+) -> Result<String, String> {
+    let repo = manager.0.get(&handle).ok_or("Repository not found")?;
+    repo.as_ref()
+        .get_audio_only_stream_url_for_video(
+            &item_id,
+            media_source_id.as_deref(),
+            start_time_seconds,
+            audio_stream_index,
+        )
+        .await
+        .map_err(|e| format!("{:?}", e))
+}
+
 /// Get audio stream URL for a track
 #[tauri::command]
 #[specta::specta]
@@ -486,10 +579,12 @@ pub async fn repository_report_playback_start(
     manager: State<'_, RepositoryManagerWrapper>,
     handle: String,
     item_id: String,
-    position_ticks: i64,
+    position_ms: i64,
 ) -> Result<(), String> {
+    let position_ticks = position_ms * 10_000;
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().report_playback_start(&item_id, position_ticks)
+    repo.as_ref()
+        .report_playback_start(&item_id, position_ticks)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -501,10 +596,12 @@ pub async fn repository_report_playback_progress(
     manager: State<'_, RepositoryManagerWrapper>,
     handle: String,
     item_id: String,
-    position_ticks: i64,
+    position_ms: i64,
 ) -> Result<(), String> {
+    let position_ticks = position_ms * 10_000;
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().report_playback_progress(&item_id, position_ticks)
+    repo.as_ref()
+        .report_playback_progress(&item_id, position_ticks)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -516,10 +613,13 @@ pub async fn repository_report_playback_stopped(
     manager: State<'_, RepositoryManagerWrapper>,
     handle: String,
     item_id: String,
-    position_ticks: i64,
+    position_ms: i64,
 ) -> Result<(), String> {
+    // Milliseconds across the boundary; the Jellyfin API wants ticks.
+    let position_ticks = position_ms * 10_000;
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().report_playback_stopped(&item_id, position_ticks)
+    repo.as_ref()
+        .report_playback_stopped(&item_id, position_ticks)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -551,7 +651,9 @@ pub fn repository_get_subtitle_url(
     format: String,
 ) -> Result<String, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    Ok(repo.as_ref().get_subtitle_url(&item_id, &media_source_id, stream_index, &format))
+    Ok(repo
+        .as_ref()
+        .get_subtitle_url(&item_id, &media_source_id, stream_index, &format))
 }
 
 /// Get video download URL with quality preset
@@ -566,7 +668,9 @@ pub fn repository_get_video_download_url(
     media_source_id: Option<String>,
 ) -> Result<String, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    Ok(repo.as_ref().get_video_download_url(&item_id, &quality, media_source_id.as_deref()))
+    Ok(repo
+        .as_ref()
+        .get_video_download_url(&item_id, &quality, media_source_id.as_deref()))
 }
 
 /// Mark an item as favorite
@@ -578,7 +682,8 @@ pub async fn repository_mark_favorite(
     item_id: String,
 ) -> Result<(), String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().mark_favorite(&item_id)
+    repo.as_ref()
+        .mark_favorite(&item_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -592,7 +697,8 @@ pub async fn repository_unmark_favorite(
     item_id: String,
 ) -> Result<(), String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().unmark_favorite(&item_id)
+    repo.as_ref()
+        .unmark_favorite(&item_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -606,7 +712,8 @@ pub async fn repository_get_person(
     person_id: String,
 ) -> Result<MediaItem, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_person(&person_id)
+    repo.as_ref()
+        .get_person(&person_id)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -621,7 +728,8 @@ pub async fn repository_get_items_by_person(
     options: Option<GetItemsOptions>,
 ) -> Result<SearchResult, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_items_by_person(&person_id, options)
+    repo.as_ref()
+        .get_items_by_person(&person_id, options)
         .await
         .map_err(|e| format!("{:?}", e))
 }
@@ -636,7 +744,8 @@ pub async fn repository_get_similar_items(
     limit: Option<usize>,
 ) -> Result<SearchResult, String> {
     let repo = manager.0.get(&handle).ok_or("Repository not found")?;
-    repo.as_ref().get_similar_items(&item_id, limit)
+    repo.as_ref()
+        .get_similar_items(&item_id, limit)
         .await
         .map_err(|e| format!("{:?}", e))
 }

src-tauri/src/commands/sessions.rs

@@ -1,9 +1,9 @@
 //! TRACES: UR-010 | JA-021 | DR-037
 
+use crate::jellyfin::client::SessionInfo;
+use crate::session_poller::{PollingHint, SessionPollerManager};
 use std::sync::Arc;
 use tauri::State;
-use crate::session_poller::{PollingHint, SessionPollerManager};
-use crate::jellyfin::client::SessionInfo;
 
 /// Tauri state wrapper for SessionPollerManager
 pub struct SessionPollerWrapper(pub Arc<SessionPollerManager>);

src-tauri/src/commands/storage/mod.rs

@@ -1,4 +1,6 @@
 //! Tauri commands for database/storage operations
+//!
+//! TRACES: UR-002, UR-011, UR-012, UR-017, UR-019, UR-025, UR-047 | IR-013 | DR-012, DR-013, DR-022, DR-060
 
 use std::sync::{Arc, Mutex};
 
@@ -7,8 +9,8 @@ use serde::{Deserialize, Serialize};
 use tauri::State;
 
 use crate::credentials::CredentialStore;
-use crate::storage::Database;
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
+use crate::storage::Database;
 use crate::thumbnail::ThumbnailCache;
 
 use super::SmartCacheWrapper;
@@ -86,7 +88,8 @@ pub fn storage_get_path(db: State<DatabaseWrapper>) -> Result<String, String> {
     let db_path = database.path();
 
     // Return the parent directory instead of the database file path
-    let storage_dir = db_path.parent()
+    let storage_dir = db_path
+        .parent()
         .ok_or_else(|| "Database path has no parent directory".to_string())?;
 
     Ok(storage_dir.to_string_lossy().to_string())
@@ -160,13 +163,16 @@ pub async fn storage_save_server(
 /// Get all saved servers
 #[tauri::command]
 #[specta::specta]
-pub async fn storage_get_servers(db: State<'_, DatabaseWrapper>) -> Result<Vec<ServerInfo>, String> {
+pub async fn storage_get_servers(
+    db: State<'_, DatabaseWrapper>,
+) -> Result<Vec<ServerInfo>, String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
     };
 
-    let query = Query::new("SELECT id, name, url, version FROM servers ORDER BY last_connected_at DESC");
+    let query =
+        Query::new("SELECT id, name, url, version FROM servers ORDER BY last_connected_at DESC");
 
     let servers = db_service
         .query_many(query, |row| {
@@ -221,7 +227,10 @@ pub async fn storage_delete_server(
         vec![QueryParam::String(server_id)],
     );
 
-    db_service.execute(delete_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(delete_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     Ok(())
 }
@@ -237,7 +246,10 @@ pub async fn storage_save_user(
     username: String,
     access_token: Option<String>,
 ) -> Result<bool, String> {
-    info!("storage_save_user called: id={}, server_id={}, username={}", id, server_id, username);
+    info!(
+        "storage_save_user called: id={}, server_id={}, username={}",
+        id, server_id, username
+    );
 
     let (db_service, db_path) = {
         let database = db.0.lock().map_err(|e| {
@@ -277,7 +289,10 @@ pub async fn storage_save_user(
         "SELECT COUNT(*) FROM users WHERE id = ?",
         vec![QueryParam::String(id.clone())],
     );
-    let verify_count: i32 = db_service.query_one(verify_query, |row| row.get(0)).await.unwrap_or(-1);
+    let verify_count: i32 = db_service
+        .query_one(verify_query, |row| row.get(0))
+        .await
+        .unwrap_or(-1);
     debug!("VERIFY: {} users with id={} after insert", verify_count, id);
     debug!("Database path: {:?}", db_path);
 
@@ -355,14 +370,20 @@ pub async fn storage_set_active_user(
 
     // Deactivate ALL users globally (since we only connect to one server at a time)
     let deactivate_query = Query::new("UPDATE users SET is_active = 0");
-    db_service.execute(deactivate_query).await.map_err(|e| e.to_string())?;
+    db_service
+        .execute(deactivate_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     // Activate the specified user and update last_login_at
     let activate_query = Query::with_params(
         "UPDATE users SET is_active = 1, last_login_at = CURRENT_TIMESTAMP WHERE id = ?",
         vec![QueryParam::String(user_id.clone())],
     );
-    let rows_affected = db_service.execute(activate_query).await.map_err(|e| e.to_string())?;
+    let rows_affected = db_service
+        .execute(activate_query)
+        .await
+        .map_err(|e| e.to_string())?;
 
     debug!("storage_set_active_user: {} rows affected", rows_affected);
 
@@ -372,7 +393,10 @@ pub async fn storage_set_active_user(
 
     // Verify the user is now active
     let verify_query = Query::new("SELECT COUNT(*) FROM users WHERE is_active = 1");
-    let verify_count: i32 = db_service.query_one(verify_query, |row| row.get(0)).await.unwrap_or(-1);
+    let verify_count: i32 = db_service
+        .query_one(verify_query, |row| row.get(0))
+        .await
+        .unwrap_or(-1);
     debug!("VERIFY: {} active users after set_active", verify_count);
     debug!("Database path: {:?}", db_path);
 
@@ -434,12 +458,21 @@ pub async fn storage_get_active_session(
 
     // Debug: count total users and active users
     let total_query = Query::new("SELECT COUNT(*) FROM users");
-    let total_users: i32 = db_service.query_one(total_query, |row| row.get(0)).await.unwrap_or(-1);
+    let total_users: i32 = db_service
+        .query_one(total_query, |row| row.get(0))
+        .await
+        .unwrap_or(-1);
 
     let active_query = Query::new("SELECT COUNT(*) FROM users WHERE is_active = 1");
-    let active_users: i32 = db_service.query_one(active_query, |row| row.get(0)).await.unwrap_or(-1);
+    let active_users: i32 = db_service
+        .query_one(active_query, |row| row.get(0))
+        .await
+        .unwrap_or(-1);
 
-    debug!("Database state: {} total users, {} active users", total_users, active_users);
+    debug!(
+        "Database state: {} total users, {} active users",
+        total_users, active_users
+    );
     debug!("Database path: {:?}", db_path);
 
     // Find active user with their server info, ordered by most recently logged in
@@ -449,18 +482,21 @@ pub async fn storage_get_active_session(
          JOIN servers s ON u.server_id = s.id
          WHERE u.is_active = 1
          ORDER BY u.last_login_at DESC
-         LIMIT 1"
+         LIMIT 1",
     );
 
-    let result = db_service.query_optional(session_query, |row| {
-        Ok((
-            row.get::<_, String>(0)?,
-            row.get::<_, String>(1)?,
-            row.get::<_, String>(2)?,
-            row.get::<_, String>(3)?,
-            row.get::<_, String>(4)?,
-        ))
-    }).await.map_err(|e| e.to_string())?;
+    let result = db_service
+        .query_optional(session_query, |row| {
+            Ok((
+                row.get::<_, String>(0)?,
+                row.get::<_, String>(1)?,
+                row.get::<_, String>(2)?,
+                row.get::<_, String>(3)?,
+                row.get::<_, String>(4)?,
+            ))
+        })
+        .await
+        .map_err(|e| e.to_string())?;
 
     match result {
         Some((user_id, username, server_id, server_url, server_name)) => {
@@ -478,7 +514,7 @@ pub async fn storage_get_active_session(
                         server_name,
                         access_token,
                     }))
-                },
+                }
                 Err(e) => {
                     // Token not found or error - session is invalid
                     warn!("Failed to get token from secure storage: {:?}", e);
@@ -547,7 +583,9 @@ pub async fn storage_delete_user(
 #[serde(rename_all = "camelCase")]
 pub struct PlaybackProgress {
     pub item_id: String,
-    pub position_ticks: i64,
+    /// Resume position in milliseconds. Stored as Jellyfin ticks in the DB;
+    /// converted here so the frontend never sees ticks.
+    pub position_ms: i64,
     pub is_played: bool,
     pub is_favorite: bool,
     pub play_count: i32,
@@ -561,8 +599,11 @@ pub async fn storage_update_playback_progress(
     db: State<'_, DatabaseWrapper>,
     user_id: String,
     item_id: String,
-    position_ticks: i64,
+    position_ms: i64,
 ) -> Result<(), String> {
+    // The frontend speaks milliseconds; ticks are a Jellyfin storage detail that
+    // stays on this side of the boundary. 10_000 ticks = 1 ms.
+    let position_ticks = position_ms * 10_000;
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -613,12 +654,14 @@ pub async fn storage_update_playback_context(
     db: State<'_, DatabaseWrapper>,
     user_id: String,
     item_id: String,
-    position_ticks: i64,
+    position_ms: i64,
     context_type: Option<String>,
     context_id: Option<String>,
 ) -> Result<(), String> {
     use crate::storage::db_service::{Query, QueryParam};
 
+    // Milliseconds in, Jellyfin ticks stored. 10_000 ticks = 1 ms.
+    let position_ticks = position_ms * 10_000;
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -638,8 +681,12 @@ pub async fn storage_update_playback_context(
             QueryParam::String(user_id.clone()),
             QueryParam::String(item_id.clone()),
             QueryParam::Int64(position_ticks),
-            context_type.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            context_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
+            context_type
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            context_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
         ],
     );
 
@@ -721,14 +768,23 @@ pub async fn storage_mark_played(
                     });
 
                 if !tracks.is_empty() {
-                    info!("Auto-queueing {} tracks from album for download", tracks.len());
+                    info!(
+                        "Auto-queueing {} tracks from album for download",
+                        tracks.len()
+                    );
 
                     // Queue each track with high priority (50) and mark as auto-downloaded
                     for (track_id, track_name, artist_name, album_name) in tracks {
                         // Generate a sanitized file path (simplified version)
                         let sanitized_name = track_name
                             .chars()
-                            .map(|c| if c.is_alphanumeric() || c == ' ' || c == '-' || c == '_' { c } else { '_' })
+                            .map(|c| {
+                                if c.is_alphanumeric() || c == ' ' || c == '-' || c == '_' {
+                                    c
+                                } else {
+                                    '_'
+                                }
+                            })
                             .collect::<String>();
                         let file_path = format!("downloads/{}/{}.mp3", album_id, sanitized_name);
 
@@ -808,9 +864,10 @@ pub async fn storage_get_playback_progress(
 
     db_service
         .query_optional(query, |row| {
+            let position_ticks: i64 = row.get(1)?;
             Ok(PlaybackProgress {
                 item_id: row.get(0)?,
-                position_ticks: row.get(1)?,
+                position_ms: position_ticks / 10_000,
                 is_played: row.get::<_, i32>(2)? != 0,
                 is_favorite: row.get::<_, i32>(3)? != 0,
                 play_count: row.get(4)?,
@@ -1123,7 +1180,10 @@ pub async fn storage_search_items(
         limit_clause
     );
 
-    let query_obj = Query::with_params(sql, vec![QueryParam::String(server_id), QueryParam::String(fts_query)]);
+    let query_obj = Query::with_params(
+        sql,
+        vec![QueryParam::String(server_id), QueryParam::String(fts_query)],
+    );
 
     let items = db_service
         .query_many(query_obj, row_to_cached_item)
@@ -1181,7 +1241,8 @@ pub async fn storage_save_item(
     };
 
     // Generate sort_name from name (remove leading "The ", "A ", etc.)
-    let sort_name = item.name
+    let sort_name = item
+        .name
         .strip_prefix("The ")
         .or_else(|| item.name.strip_prefix("A "))
         .or_else(|| item.name.strip_prefix("An "))
@@ -1202,28 +1263,66 @@ pub async fn storage_save_item(
         vec![
             QueryParam::String(item.id),
             QueryParam::String(server_id),
-            item.library_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.parent_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
+            item.library_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.parent_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
             QueryParam::String(item.name),
             QueryParam::String(sort_name),
             QueryParam::String(item.item_type),
-            item.overview.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.genres.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.runtime_ticks.map(QueryParam::Int64).unwrap_or(QueryParam::Null),
-            item.production_year.map(QueryParam::Int).unwrap_or(QueryParam::Null),
-            item.community_rating.map(QueryParam::Float).unwrap_or(QueryParam::Null),
-            item.official_rating.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.primary_image_tag.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.album_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.album_name.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.album_artist.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.artists.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.index_number.map(QueryParam::Int).unwrap_or(QueryParam::Null),
-            item.series_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.series_name.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.season_id.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.season_name.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            item.parent_index_number.map(QueryParam::Int).unwrap_or(QueryParam::Null),
+            item.overview
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.genres
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.runtime_ticks
+                .map(QueryParam::Int64)
+                .unwrap_or(QueryParam::Null),
+            item.production_year
+                .map(QueryParam::Int)
+                .unwrap_or(QueryParam::Null),
+            item.community_rating
+                .map(QueryParam::Float)
+                .unwrap_or(QueryParam::Null),
+            item.official_rating
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.primary_image_tag
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.album_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.album_name
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.album_artist
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.artists
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.index_number
+                .map(QueryParam::Int)
+                .unwrap_or(QueryParam::Null),
+            item.series_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.series_name
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.season_id
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.season_name
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            item.parent_index_number
+                .map(QueryParam::Int)
+                .unwrap_or(QueryParam::Null),
         ],
     );
 
@@ -1256,7 +1355,6 @@ pub async fn storage_get_pending_sync_count(
     Ok(count)
 }
 
-
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -1405,7 +1503,7 @@ mod tests {
     fn test_playback_progress_serialization() {
         let progress = PlaybackProgress {
             item_id: "item-123".to_string(),
-            position_ticks: 150_000_000,
+            position_ms: 150_000_000,
             is_played: true,
             is_favorite: false,
             play_count: 3,
@@ -1422,7 +1520,7 @@ mod tests {
     fn test_playback_progress_played_status() {
         let progress = PlaybackProgress {
             item_id: "item-456".to_string(),
-            position_ticks: 0,
+            position_ms: 0,
             is_played: true,
             is_favorite: true,
             play_count: 1,
@@ -1440,7 +1538,7 @@ mod tests {
     fn test_playback_progress_not_played() {
         let progress = PlaybackProgress {
             item_id: "item-789".to_string(),
-            position_ticks: 30_000_000,
+            position_ms: 30_000_000,
             is_played: false,
             is_favorite: false,
             play_count: 0,
@@ -1510,7 +1608,7 @@ mod tests {
     fn test_playback_progress_camel_case() {
         let progress = PlaybackProgress {
             item_id: "i1".to_string(),
-            position_ticks: 100,
+            position_ms: 100,
             is_played: true,
             is_favorite: false,
             play_count: 1,
@@ -1519,7 +1617,7 @@ mod tests {
         let json = serde_json::to_string(&progress).unwrap();
         // Verify camelCase serialization
         assert!(json.contains("itemId"));
-        assert!(json.contains("positionTicks"));
+        assert!(json.contains("positionMs"));
         assert!(json.contains("isPlayed"));
         assert!(json.contains("isFavorite"));
         assert!(json.contains("playCount"));

src-tauri/src/commands/storage/people.rs

@@ -1,13 +1,14 @@
 //! Person/cast metadata cache commands.
+//!
+//! TRACES: UR-035, UR-036 | IR-023 | DR-040, DR-041
 
-use std::sync::Arc;
 use serde::{Deserialize, Serialize};
+use std::sync::Arc;
 use tauri::State;
 
 use super::DatabaseWrapper;
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
 
-
 /// Cached person info returned to frontend
 #[derive(specta::Type, Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -54,10 +55,22 @@ pub async fn storage_save_person(
             QueryParam::String(person.id),
             QueryParam::String(person.server_id),
             QueryParam::String(person.name),
-            person.overview.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            person.primary_image_tag.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            person.premiere_date.map(QueryParam::String).unwrap_or(QueryParam::Null),
-            person.end_date.map(QueryParam::String).unwrap_or(QueryParam::Null),
+            person
+                .overview
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            person
+                .primary_image_tag
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            person
+                .premiere_date
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
+            person
+                .end_date
+                .map(QueryParam::String)
+                .unwrap_or(QueryParam::Null),
         ],
     );
 
@@ -117,25 +130,32 @@ pub async fn storage_save_item_people(
     let associations_clone = associations.clone();
 
     // Use transaction for batch insert
-    db_service.transaction(move |tx| {
-        for assoc in &associations_clone {
-            let query = Query::with_params(
-                "INSERT OR REPLACE INTO item_people (
+    db_service
+        .transaction(move |tx| {
+            for assoc in &associations_clone {
+                let query = Query::with_params(
+                    "INSERT OR REPLACE INTO item_people (
                     item_id, person_id, server_id, person_type, role, sort_order, synced_at
                 ) VALUES (?, ?, ?, ?, ?, ?, CURRENT_TIMESTAMP)",
-                vec![
-                    QueryParam::String(assoc.item_id.clone()),
-                    QueryParam::String(assoc.person_id.clone()),
-                    QueryParam::String(assoc.server_id.clone()),
-                    QueryParam::String(assoc.person_type.clone()),
-                    assoc.role.clone().map(QueryParam::String).unwrap_or(QueryParam::Null),
-                    QueryParam::Int(assoc.sort_order),
-                ],
-            );
-            tx.execute(query)?;
-        }
-        Ok(())
-    }).await.map_err(|e| e.to_string())?;
+                    vec![
+                        QueryParam::String(assoc.item_id.clone()),
+                        QueryParam::String(assoc.person_id.clone()),
+                        QueryParam::String(assoc.server_id.clone()),
+                        QueryParam::String(assoc.person_type.clone()),
+                        assoc
+                            .role
+                            .clone()
+                            .map(QueryParam::String)
+                            .unwrap_or(QueryParam::Null),
+                        QueryParam::Int(assoc.sort_order),
+                    ],
+                );
+                tx.execute(query)?;
+            }
+            Ok(())
+        })
+        .await
+        .map_err(|e| e.to_string())?;
 
     Ok(())
 }
@@ -176,4 +196,3 @@ pub async fn storage_get_item_people(
 
     Ok(people)
 }
-

src-tauri/src/commands/storage/series_prefs.rs

@@ -1,13 +1,14 @@
 //! Per-series preferred audio track commands.
+//!
+//! TRACES: UR-021 | DR-024
 
-use std::sync::Arc;
 use serde::{Deserialize, Serialize};
+use std::sync::Arc;
 use tauri::State;
 
 use super::DatabaseWrapper;
 use crate::storage::db_service::{DatabaseService, Query, QueryParam};
 
-
 /// Audio track preference for a series
 #[derive(specta::Type, Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]

src-tauri/src/commands/storage/thumbnails.rs

@@ -1,9 +1,11 @@
 //! Thumbnail cache and image-URL commands.
+//!
+//! TRACES: UR-007 | JA-028 | DR-016
 
-use std::sync::{Arc, OnceLock};
-use tokio::sync::Semaphore;
 use serde::Deserialize;
+use std::sync::{Arc, OnceLock};
 use tauri::State;
+use tokio::sync::Semaphore;
 
 use super::{DatabaseWrapper, ThumbnailCacheWrapper};
 use crate::commands::repository::RepositoryManagerWrapper;
@@ -11,7 +13,6 @@ use crate::repository::types::{ImageOptions, ImageType};
 use crate::repository::MediaRepository;
 use crate::thumbnail::{ThumbnailCacheStats, ThumbnailWorker};
 
-
 /// Get cached thumbnail path, returns None if not cached
 /// Also updates last_accessed timestamp for LRU tracking
 #[tauri::command]
@@ -28,7 +29,8 @@ pub async fn thumbnail_get_cached(
         Arc::new(database.service())
     };
 
-    let result = thumbnail_cache.0
+    let result = thumbnail_cache
+        .0
         .get_cached_path(db_service, &item_id, &image_type, &tag)
         .await
         .map(|p| p.to_string_lossy().to_string());
@@ -61,7 +63,10 @@ pub async fn thumbnail_save(
         Arc::new(database.service())
     };
 
-    let path = thumbnail_cache.0.save_thumbnail(db_service, &item_id, &image_type, &tag, &data, None, None).await?;
+    let path = thumbnail_cache
+        .0
+        .save_thumbnail(db_service, &item_id, &image_type, &tag, &data, None, None)
+        .await?;
     Ok(path.to_string_lossy().to_string())
 }
 
@@ -179,7 +184,7 @@ pub async fn image_get_url(
     repository_handle: String,
     request: GetImageRequest,
 ) -> Result<String, String> {
-    use base64::{Engine as _, engine::general_purpose::STANDARD as BASE64};
+    use base64::{engine::general_purpose::STANDARD as BASE64, Engine as _};
     use std::fs;
 
     let tag = request.tag.as_deref().unwrap_or("default");
@@ -191,14 +196,18 @@ pub async fn image_get_url(
     };
 
     // Check cache first
-    if let Some(cached_path) = thumbnail_cache.0.get_cached_path(
-        db_service.clone(),
-        &request.item_id,
-        &request.image_type,
-        tag,
-    ).await {
-        let image_data = fs::read(&cached_path)
-            .map_err(|e| format!("Failed to read cached image: {}", e))?;
+    if let Some(cached_path) = thumbnail_cache
+        .0
+        .get_cached_path(
+            db_service.clone(),
+            &request.item_id,
+            &request.image_type,
+            tag,
+        )
+        .await
+    {
+        let image_data =
+            fs::read(&cached_path).map_err(|e| format!("Failed to read cached image: {}", e))?;
         let base64_data = BASE64.encode(&image_data);
         let mime_type = mime_from_ext(cached_path.extension().and_then(|s| s.to_str()));
         return Ok(format!("data:{};base64,{}", mime_type, base64_data));
@@ -206,10 +215,14 @@ pub async fn image_get_url(
 
     // Not cached — fetch from server and cache.
     // Acquire semaphore to limit concurrent downloads (prevents connection pool starvation).
-    let _permit = image_semaphore().acquire().await
+    let _permit = image_semaphore()
+        .acquire()
+        .await
         .map_err(|_| "Image download semaphore closed".to_string())?;
 
-    let repository = repository_manager.0.get(&repository_handle)
+    let repository = repository_manager
+        .0
+        .get(&repository_handle)
         .ok_or_else(|| "Repository not found - user may need to log in".to_string())?;
 
     let image_type_enum = match request.image_type.as_str() {
@@ -229,18 +242,23 @@ pub async fn image_get_url(
     };
 
     let server_url = repository.get_image_url(&request.item_id, image_type_enum, Some(options));
-    let image_data = repository.download_bytes(&server_url).await
+    let image_data = repository
+        .download_bytes(&server_url)
+        .await
         .map_err(|e| format!("Failed to download image: {}", e))?;
 
-    let cached_path = thumbnail_cache.0.save_thumbnail(
-        db_service,
-        &request.item_id,
-        &request.image_type,
-        tag,
-        &image_data,
-        request.max_width.map(|w| w as i32),
-        request.max_height.map(|h| h as i32),
-    ).await?;
+    let cached_path = thumbnail_cache
+        .0
+        .save_thumbnail(
+            db_service,
+            &request.item_id,
+            &request.image_type,
+            tag,
+            &image_data,
+            request.max_width.map(|w| w as i32),
+            request.max_height.map(|h| h as i32),
+        )
+        .await?;
 
     let base64_data = BASE64.encode(&image_data);
     let mime_type = mime_from_ext(cached_path.extension().and_then(|s| s.to_str()));

src-tauri/src/commands/sync.rs

@@ -53,7 +53,10 @@ pub async fn sync_queue_mutation(
     );
 
     db_service.execute(query).await.map_err(|e| e.to_string())?;
-    let id = db_service.last_insert_rowid().await.map_err(|e| e.to_string())?;
+    let id = db_service
+        .last_insert_rowid()
+        .await
+        .map_err(|e| e.to_string())?;
 
     Ok(id)
 }
@@ -110,10 +113,7 @@ pub async fn sync_get_pending(
 /// Mark a sync operation as in progress
 #[tauri::command]
 #[specta::specta]
-pub async fn sync_mark_processing(
-    db: State<'_, DatabaseWrapper>,
-    id: i64,
-) -> Result<(), String> {
+pub async fn sync_mark_processing(db: State<'_, DatabaseWrapper>, id: i64) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())
@@ -131,10 +131,7 @@ pub async fn sync_mark_processing(
 /// Mark a sync operation as completed
 #[tauri::command]
 #[specta::specta]
-pub async fn sync_mark_completed(
-    db: State<'_, DatabaseWrapper>,
-    id: i64,
-) -> Result<(), String> {
+pub async fn sync_mark_completed(db: State<'_, DatabaseWrapper>, id: i64) -> Result<(), String> {
     let db_service = {
         let database = db.0.lock().map_err(|e| e.to_string())?;
         Arc::new(database.service())

src-tauri/src/connectivity/mod.rs

@@ -1,9 +1,9 @@
+use serde::{Deserialize, Serialize};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 use std::time::{Duration, Instant};
-use tokio::sync::RwLock;
 use tauri::{AppHandle, Emitter};
-use serde::{Serialize, Deserialize};
+use tokio::sync::RwLock;
 
 use crate::jellyfin::http_client::HttpClient;
 
@@ -170,9 +170,15 @@ impl ConnectivityReporter {
         if let Some(app_handle) = &self.app_handle {
             let event = ConnectivityChangeEvent { is_reachable };
             if let Err(e) = app_handle.emit("connectivity:changed", event) {
-                log::error!("[ConnectivityMonitor] Failed to emit connectivity change event: {}", e);
+                log::error!(
+                    "[ConnectivityMonitor] Failed to emit connectivity change event: {}",
+                    e
+                );
             } else {
-                log::info!("[ConnectivityMonitor] Emitted connectivity change: {}", is_reachable);
+                log::info!(
+                    "[ConnectivityMonitor] Emitted connectivity change: {}",
+                    is_reachable
+                );
             }
         }
     }
@@ -181,7 +187,10 @@ impl ConnectivityReporter {
     async fn emit_server_reconnected(&self) {
         if let Some(app_handle) = &self.app_handle {
             if let Err(e) = app_handle.emit("connectivity:reconnected", ()) {
-                log::error!("[ConnectivityMonitor] Failed to emit reconnection event: {}", e);
+                log::error!(
+                    "[ConnectivityMonitor] Failed to emit reconnection event: {}",
+                    e
+                );
             } else {
                 log::info!("[ConnectivityMonitor] Emitted server reconnected event");
             }
@@ -233,7 +242,14 @@ impl ConnectivityMonitor {
         // Check new server immediately
         log::info!("[ConnectivityMonitor] Checking reachability of new server...");
         let is_reachable = self.check_reachability().await;
-        log::info!("[ConnectivityMonitor] New server is {}", if is_reachable { "REACHABLE" } else { "UNREACHABLE" });
+        log::info!(
+            "[ConnectivityMonitor] New server is {}",
+            if is_reachable {
+                "REACHABLE"
+            } else {
+                "UNREACHABLE"
+            }
+        );
     }
 
     /// Get current connectivity status
@@ -298,11 +314,16 @@ impl ConnectivityMonitor {
             return;
         }
 
-        log::info!("[ConnectivityMonitor] Starting connectivity monitoring (offline recovery probe)");
+        log::info!(
+            "[ConnectivityMonitor] Starting connectivity monitoring (offline recovery probe)"
+        );
 
         // Perform an immediate check so startup reflects reality quickly.
         let is_reachable = self.check_reachability().await;
-        log::info!("[ConnectivityMonitor] Initial connectivity check: {}", if is_reachable { "ONLINE" } else { "OFFLINE" });
+        log::info!(
+            "[ConnectivityMonitor] Initial connectivity check: {}",
+            if is_reachable { "ONLINE" } else { "OFFLINE" }
+        );
 
         let is_monitoring = Arc::clone(&self.is_monitoring);
         let server_url = Arc::clone(&self.server_url);
@@ -452,7 +473,9 @@ mod tests {
         let reporter = test_reporter();
 
         // Force offline.
-        reporter.apply_probe_result(false, Some("down".to_string())).await;
+        reporter
+            .apply_probe_result(false, Some("down".to_string()))
+            .await;
         assert!(!is_reachable(&reporter).await);
 
         // A single success brings us straight back online.
@@ -490,7 +513,9 @@ mod tests {
         assert!(!is_reachable(&reporter).await);
 
         // Should not panic or change state.
-        reporter.report_network_failure(Some("still down".to_string())).await;
+        reporter
+            .report_network_failure(Some("still down".to_string()))
+            .await;
         assert!(!is_reachable(&reporter).await);
     }
 }

src-tauri/src/credentials.rs

@@ -105,13 +105,21 @@ impl CredentialStore {
     }
 
     /// Save an access token for a user
-    pub fn save_token(&self, user_id: &str, token: &str) -> Result<CredentialResult, CredentialError> {
+    pub fn save_token(
+        &self,
+        user_id: &str,
+        token: &str,
+    ) -> Result<CredentialResult, CredentialError> {
         if self.using_keyring {
             log::debug!("Saving token for user {} to keyring", user_id);
             self.save_to_keyring(user_id, token)?;
             Ok(CredentialResult::Keyring)
         } else {
-            log::debug!("Saving token for user {} to encrypted file at {:?}", user_id, self.credentials_path);
+            log::debug!(
+                "Saving token for user {} to encrypted file at {:?}",
+                user_id,
+                self.credentials_path
+            );
             self.save_to_file(user_id, token)?;
             log::debug!("Successfully saved token to encrypted file");
             Ok(CredentialResult::EncryptedFile)
@@ -124,7 +132,11 @@ impl CredentialStore {
             log::debug!("Getting token for user {} from keyring", user_id);
             self.get_from_keyring(user_id)
         } else {
-            log::debug!("Getting token for user {} from encrypted file at {:?}", user_id, self.credentials_path);
+            log::debug!(
+                "Getting token for user {} from encrypted file at {:?}",
+                user_id,
+                self.credentials_path
+            );
             let result = self.get_from_file(user_id);
             if result.is_ok() {
                 log::debug!("Successfully retrieved token from encrypted file");
@@ -197,7 +209,7 @@ impl CredentialStore {
             .arg("__nonexistent_test__")
             .output()
         {
-            Ok(_) => true, // If command runs (even with no results), secret-tool is available
+            Ok(_) => true,   // If command runs (even with no results), secret-tool is available
             Err(_) => false, // Command not found or can't execute
         }
     }
@@ -232,8 +244,8 @@ impl CredentialStore {
         {
             // Use secret-tool directly on Linux as a workaround for keyring-rs library issues
             // See Technical Debt section in README.md for details
-            use std::process::{Command, Stdio};
             use std::io::Write;
+            use std::process::{Command, Stdio};
 
             let key = format!("access_token:{}", user_id);
             let mut child = Command::new("secret-tool")
@@ -248,20 +260,27 @@ impl CredentialStore {
                 .stdout(Stdio::null())
                 .stderr(Stdio::null())
                 .spawn()
-                .map_err(|e| CredentialError::Keyring(format!("Failed to spawn secret-tool: {}", e)))?;
+                .map_err(|e| {
+                    CredentialError::Keyring(format!("Failed to spawn secret-tool: {}", e))
+                })?;
 
             if let Some(mut stdin) = child.stdin.take() {
-                stdin.write_all(token.as_bytes())
-                    .map_err(|e| CredentialError::Keyring(format!("Failed to write to secret-tool: {}", e)))?;
+                stdin.write_all(token.as_bytes()).map_err(|e| {
+                    CredentialError::Keyring(format!("Failed to write to secret-tool: {}", e))
+                })?;
             }
 
-            let status = child.wait()
-                .map_err(|e| CredentialError::Keyring(format!("Failed to wait for secret-tool: {}", e)))?;
+            let status = child.wait().map_err(|e| {
+                CredentialError::Keyring(format!("Failed to wait for secret-tool: {}", e))
+            })?;
 
             if status.success() {
                 Ok(())
             } else {
-                Err(CredentialError::Keyring(format!("secret-tool failed with status: {}", status)))
+                Err(CredentialError::Keyring(format!(
+                    "secret-tool failed with status: {}",
+                    status
+                )))
             }
         }
 
@@ -290,7 +309,11 @@ impl CredentialStore {
             use std::process::Command;
 
             let key = format!("access_token:{}", user_id);
-            log::debug!("Looking up token with service={}, username={}", SERVICE_NAME, key);
+            log::debug!(
+                "Looking up token with service={}, username={}",
+                SERVICE_NAME,
+                key
+            );
 
             let output = Command::new("secret-tool")
                 .arg("lookup")
@@ -299,18 +322,29 @@ impl CredentialStore {
                 .arg("username")
                 .arg(&key)
                 .output()
-                .map_err(|e| CredentialError::Keyring(format!("Failed to run secret-tool: {}", e)))?;
+                .map_err(|e| {
+                    CredentialError::Keyring(format!("Failed to run secret-tool: {}", e))
+                })?;
 
             if output.status.success() {
-                log::debug!("secret-tool lookup succeeded, token length: {}", output.stdout.len());
+                log::debug!(
+                    "secret-tool lookup succeeded, token length: {}",
+                    output.stdout.len()
+                );
                 let token = String::from_utf8(output.stdout)
-                    .map_err(|e| CredentialError::Keyring(format!("Invalid UTF-8 in token: {}", e)))?
+                    .map_err(|e| {
+                        CredentialError::Keyring(format!("Invalid UTF-8 in token: {}", e))
+                    })?
                     .trim()
                     .to_string();
                 Ok(token)
             } else {
                 let stderr = String::from_utf8_lossy(&output.stderr);
-                log::warn!("secret-tool lookup failed with status: {} stderr: {}", output.status, stderr);
+                log::warn!(
+                    "secret-tool lookup failed with status: {} stderr: {}",
+                    output.status,
+                    stderr
+                );
                 Err(CredentialError::NotFound)
             }
         }
@@ -348,13 +382,18 @@ impl CredentialStore {
                 .arg("username")
                 .arg(&key)
                 .status()
-                .map_err(|e| CredentialError::Keyring(format!("Failed to run secret-tool: {}", e)))?;
+                .map_err(|e| {
+                    CredentialError::Keyring(format!("Failed to run secret-tool: {}", e))
+                })?;
 
             // secret-tool clear returns success even if entry doesn't exist
             if status.success() {
                 Ok(())
             } else {
-                Err(CredentialError::Keyring(format!("secret-tool clear failed with status: {}", status)))
+                Err(CredentialError::Keyring(format!(
+                    "secret-tool clear failed with status: {}",
+                    status
+                )))
             }
         }
 
@@ -398,10 +437,7 @@ impl CredentialStore {
         #[cfg(target_os = "android")]
         {
             // Try to read Android build properties from /system/build.prop
-            let build_prop_paths = [
-                "/system/build.prop",
-                "/vendor/build.prop",
-            ];
+            let build_prop_paths = ["/system/build.prop", "/vendor/build.prop"];
 
             for path in &build_prop_paths {
                 if let Ok(content) = fs::read_to_string(path) {
@@ -410,7 +446,8 @@ impl CredentialStore {
                         if line.starts_with("ro.build.fingerprint=")
                             || line.starts_with("ro.serialno=")
                             || line.starts_with("ro.build.id=")
-                            || line.starts_with("ro.product.model=") {
+                            || line.starts_with("ro.product.model=")
+                        {
                             hasher.update(line.as_bytes());
                         }
                     }
@@ -439,8 +476,8 @@ impl CredentialStore {
             return Ok(serde_json::json!({}));
         }
 
-        let encrypted_data =
-            fs::read_to_string(&self.credentials_path).map_err(|e| CredentialError::Io(e.to_string()))?;
+        let encrypted_data = fs::read_to_string(&self.credentials_path)
+            .map_err(|e| CredentialError::Io(e.to_string()))?;
 
         if encrypted_data.is_empty() {
             return Ok(serde_json::json!({}));
@@ -456,19 +493,21 @@ impl CredentialStore {
             fs::create_dir_all(parent).map_err(|e| CredentialError::Io(e.to_string()))?;
         }
 
-        let json = serde_json::to_string(data).map_err(|e| CredentialError::Encryption(e.to_string()))?;
+        let json =
+            serde_json::to_string(data).map_err(|e| CredentialError::Encryption(e.to_string()))?;
         let encrypted = self.encrypt(&json)?;
 
         fs::write(&self.credentials_path, encrypted).map_err(|e| CredentialError::Io(e.to_string()))
     }
 
     fn encrypt(&self, plaintext: &str) -> Result<String, CredentialError> {
-        let cipher =
-            Aes256Gcm::new_from_slice(&self.encryption_key).map_err(|e| CredentialError::Encryption(e.to_string()))?;
+        let cipher = Aes256Gcm::new_from_slice(&self.encryption_key)
+            .map_err(|e| CredentialError::Encryption(e.to_string()))?;
 
         // Generate a random nonce
         let mut nonce_bytes = [0u8; 12];
-        getrandom::getrandom(&mut nonce_bytes).map_err(|e| CredentialError::Encryption(e.to_string()))?;
+        getrandom::getrandom(&mut nonce_bytes)
+            .map_err(|e| CredentialError::Encryption(e.to_string()))?;
         let nonce = Nonce::from_slice(&nonce_bytes);
 
         let ciphertext = cipher
@@ -488,14 +527,16 @@ impl CredentialStore {
             .map_err(|e| CredentialError::Encryption(e.to_string()))?;
 
         if combined.len() < 12 {
-            return Err(CredentialError::Encryption("Invalid encrypted data".to_string()));
+            return Err(CredentialError::Encryption(
+                "Invalid encrypted data".to_string(),
+            ));
         }
 
         let (nonce_bytes, ciphertext) = combined.split_at(12);
         let nonce = Nonce::from_slice(nonce_bytes);
 
-        let cipher =
-            Aes256Gcm::new_from_slice(&self.encryption_key).map_err(|e| CredentialError::Encryption(e.to_string()))?;
+        let cipher = Aes256Gcm::new_from_slice(&self.encryption_key)
+            .map_err(|e| CredentialError::Encryption(e.to_string()))?;
 
         let plaintext = cipher
             .decrypt(nonce, ciphertext)
@@ -686,32 +727,39 @@ mod android_keystore {
             .attach_current_thread()
             .map_err(|e| CredentialError::Keyring(format!("Failed to attach thread: {}", e)))?;
 
-        let instance = get_secure_storage_instance(&mut env)
-            .map_err(|e| CredentialError::Keyring(e))?;
+        let instance =
+            get_secure_storage_instance(&mut env).map_err(|e| CredentialError::Keyring(e))?;
 
         let key = format!("access_token:{}", user_id);
         let key_jstring = env
             .new_string(&key)
             .map_err(|e| CredentialError::Keyring(format!("Failed to create key string: {}", e)))?;
-        let token_jstring = env
-            .new_string(token)
-            .map_err(|e| CredentialError::Keyring(format!("Failed to create token string: {}", e)))?;
+        let token_jstring = env.new_string(token).map_err(|e| {
+            CredentialError::Keyring(format!("Failed to create token string: {}", e))
+        })?;
 
         let result = env
             .call_method(
                 instance,
                 "saveToken",
                 "(Ljava/lang/String;Ljava/lang/String;)Z",
-                &[JValue::Object(&key_jstring.into()), JValue::Object(&token_jstring.into())],
+                &[
+                    JValue::Object(&key_jstring.into()),
+                    JValue::Object(&token_jstring.into()),
+                ],
             )
             .map_err(|e| CredentialError::Keyring(format!("Failed to call saveToken: {}", e)))?
             .z()
-            .map_err(|e| CredentialError::Keyring(format!("Failed to get boolean result: {}", e)))?;
+            .map_err(|e| {
+                CredentialError::Keyring(format!("Failed to get boolean result: {}", e))
+            })?;
 
         if result {
             Ok(())
         } else {
-            Err(CredentialError::Keyring("saveToken returned false".to_string()))
+            Err(CredentialError::Keyring(
+                "saveToken returned false".to_string(),
+            ))
         }
     }
 
@@ -725,8 +773,8 @@ mod android_keystore {
             .attach_current_thread()
             .map_err(|e| CredentialError::Keyring(format!("Failed to attach thread: {}", e)))?;
 
-        let instance = get_secure_storage_instance(&mut env)
-            .map_err(|e| CredentialError::Keyring(e))?;
+        let instance =
+            get_secure_storage_instance(&mut env).map_err(|e| CredentialError::Keyring(e))?;
 
         let key = format!("access_token:{}", user_id);
         let key_jstring = env
@@ -767,8 +815,8 @@ mod android_keystore {
             .attach_current_thread()
             .map_err(|e| CredentialError::Keyring(format!("Failed to attach thread: {}", e)))?;
 
-        let instance = get_secure_storage_instance(&mut env)
-            .map_err(|e| CredentialError::Keyring(e))?;
+        let instance =
+            get_secure_storage_instance(&mut env).map_err(|e| CredentialError::Keyring(e))?;
 
         let key = format!("access_token:{}", user_id);
         let key_jstring = env
@@ -784,19 +832,25 @@ mod android_keystore {
             )
             .map_err(|e| CredentialError::Keyring(format!("Failed to call deleteToken: {}", e)))?
             .z()
-            .map_err(|e| CredentialError::Keyring(format!("Failed to get boolean result: {}", e)))?;
+            .map_err(|e| {
+                CredentialError::Keyring(format!("Failed to get boolean result: {}", e))
+            })?;
 
         if result {
             Ok(())
         } else {
-            Err(CredentialError::Keyring("deleteToken returned false".to_string()))
+            Err(CredentialError::Keyring(
+                "deleteToken returned false".to_string(),
+            ))
         }
     }
 }
 
 // Export Android keystore functions at the module level for easier access
 #[cfg(target_os = "android")]
-pub use android_keystore::{initialize_secure_storage, test_keystore_available as android_test_keystore_available};
+pub use android_keystore::{
+    initialize_secure_storage, test_keystore_available as android_test_keystore_available,
+};
 
 #[cfg(test)]
 mod tests {

src-tauri/src/domain/from_jellyfin.rs

@@ -0,0 +1,180 @@
+//! Jellyfin → domain translation.
+//!
+//! The ONLY place Jellyfin's vocabulary touches the domain model. Adding a
+//! second provider later means a sibling `from_<provider>.rs`; the domain types
+//! and every consumer stay untouched.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+use super::media::{MediaKind, StreamKind};
+
+/// Classify a Jellyfin media-stream `Type` string into a neutral [`StreamKind`].
+/// Total and panic-free.
+pub fn stream_kind_from_jellyfin(stream_type: &str) -> StreamKind {
+    match stream_type {
+        "Audio" => StreamKind::Audio,
+        "Video" => StreamKind::Video,
+        "Subtitle" => StreamKind::Subtitle,
+        _ => StreamKind::Other,
+    }
+}
+
+/// Jellyfin ticks per second (10 million). A tick is 100 ns.
+/// The frontend must never see ticks — this is where they die.
+const TICKS_PER_MILLISECOND: i64 = 10_000;
+
+/// Convert a Jellyfin `RunTimeTicks` value to milliseconds.
+///
+/// Domain durations are milliseconds; ticks are a Jellyfin unit and stop here.
+pub fn ticks_to_ms(ticks: i64) -> i64 {
+    ticks / TICKS_PER_MILLISECOND
+}
+
+/// Classify a Jellyfin `Type` string into a neutral [`MediaKind`].
+///
+/// **Total and panic-free**: any unrecognised string maps to [`MediaKind::Other`]
+/// rather than failing. `is_folder` disambiguates the one Jellyfin type
+/// (`ChannelFolderItem`) whose kind depends on whether it is a container.
+///
+/// The recognised set is every `item_type` the frontend audit found in use
+/// (docs/specs/frontend-domain-model.md), plus the common cast/crew person
+/// subtypes Jellyfin returns in `People[].Type`.
+pub fn kind_from_jellyfin(item_type: &str, is_folder: bool) -> MediaKind {
+    match item_type {
+        // Music
+        "Audio" | "MusicVideo" => MediaKind::Track,
+        "MusicAlbum" => MediaKind::Album,
+        "MusicArtist" | "AlbumArtist" => MediaKind::Artist,
+        "Playlist" => MediaKind::Playlist,
+
+        // Video
+        "Movie" => MediaKind::Movie,
+        "Series" => MediaKind::Series,
+        "Season" => MediaKind::Season,
+        "Episode" => MediaKind::Episode,
+        // A bare video leaf with no richer classification.
+        "Video" => MediaKind::Movie,
+
+        // Cast / crew — Jellyfin uses both a "Person" item type and role-typed
+        // people (Actor/Director/Writer/Composer/…) in People[].Type.
+        "Person" | "Actor" | "Director" | "Writer" | "Composer" | "GuestStar" | "Producer" => {
+            MediaKind::Person
+        }
+
+        // A live TV channel: playable, but a non-seekable live stream.
+        "TvChannel" | "LiveTvChannel" => MediaKind::LiveChannel,
+        // A bare channel is a container the user drills into.
+        "Channel" => MediaKind::Channel,
+
+        // Containers
+        "Folder" | "CollectionFolder" | "UserView" | "BoxSet" => MediaKind::Folder,
+        // ChannelFolderItem is a container when it is a folder, else a playable
+        // channel leaf (distinct kind so the UI can route it to playback).
+        "ChannelFolderItem" => {
+            if is_folder {
+                MediaKind::Folder
+            } else {
+                MediaKind::ChannelItem
+            }
+        }
+
+        // Unknown → safe sink. Never panics.
+        _ => {
+            if is_folder {
+                MediaKind::Folder
+            } else {
+                MediaKind::Other
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn ticks_convert_to_milliseconds() {
+        // 1 second = 10,000,000 ticks = 1000 ms
+        assert_eq!(ticks_to_ms(10_000_000), 1000);
+        // 90.5 s
+        assert_eq!(ticks_to_ms(905_000_000), 90_500);
+        assert_eq!(ticks_to_ms(0), 0);
+        // Sub-millisecond truncates toward zero, not panics.
+        assert_eq!(ticks_to_ms(9_999), 0);
+    }
+
+    #[test]
+    fn music_types_map() {
+        assert_eq!(kind_from_jellyfin("Audio", false), MediaKind::Track);
+        assert_eq!(kind_from_jellyfin("MusicAlbum", true), MediaKind::Album);
+        assert_eq!(kind_from_jellyfin("MusicArtist", true), MediaKind::Artist);
+        assert_eq!(kind_from_jellyfin("Playlist", true), MediaKind::Playlist);
+    }
+
+    #[test]
+    fn video_types_map() {
+        assert_eq!(kind_from_jellyfin("Movie", false), MediaKind::Movie);
+        assert_eq!(kind_from_jellyfin("Series", true), MediaKind::Series);
+        assert_eq!(kind_from_jellyfin("Season", true), MediaKind::Season);
+        assert_eq!(kind_from_jellyfin("Episode", false), MediaKind::Episode);
+        assert_eq!(kind_from_jellyfin("Video", false), MediaKind::Movie);
+    }
+
+    #[test]
+    fn person_and_role_types_map_to_person() {
+        for t in ["Person", "Actor", "Director", "Writer", "Composer"] {
+            assert_eq!(kind_from_jellyfin(t, false), MediaKind::Person, "{t}");
+        }
+    }
+
+    #[test]
+    fn channel_and_container_types_map() {
+        assert_eq!(
+            kind_from_jellyfin("TvChannel", false),
+            MediaKind::LiveChannel
+        );
+        assert_eq!(kind_from_jellyfin("Channel", false), MediaKind::Channel);
+        assert_eq!(
+            kind_from_jellyfin("CollectionFolder", true),
+            MediaKind::Folder
+        );
+        assert_eq!(kind_from_jellyfin("BoxSet", true), MediaKind::Folder);
+    }
+
+    #[test]
+    fn channel_folder_item_disambiguates_on_is_folder() {
+        assert_eq!(
+            kind_from_jellyfin("ChannelFolderItem", true),
+            MediaKind::Folder
+        );
+        assert_eq!(
+            kind_from_jellyfin("ChannelFolderItem", false),
+            MediaKind::ChannelItem
+        );
+    }
+
+    #[test]
+    fn stream_kinds_map() {
+        assert_eq!(stream_kind_from_jellyfin("Audio"), StreamKind::Audio);
+        assert_eq!(stream_kind_from_jellyfin("Video"), StreamKind::Video);
+        assert_eq!(stream_kind_from_jellyfin("Subtitle"), StreamKind::Subtitle);
+        assert_eq!(
+            stream_kind_from_jellyfin("EmbeddedImage"),
+            StreamKind::Other
+        );
+        assert_eq!(stream_kind_from_jellyfin(""), StreamKind::Other);
+    }
+
+    #[test]
+    fn unknown_type_never_panics_and_falls_back() {
+        // The whole point: garbage in, safe kind out, no panic.
+        assert_eq!(kind_from_jellyfin("Epis0de", false), MediaKind::Other);
+        assert_eq!(kind_from_jellyfin("", false), MediaKind::Other);
+        assert_eq!(
+            kind_from_jellyfin("SomeFutureType", true),
+            MediaKind::Folder
+        );
+        assert_eq!(kind_from_jellyfin("🎵unicode", false), MediaKind::Other);
+    }
+}

src-tauri/src/domain/media.rs

@@ -0,0 +1,91 @@
+//! Canonical, provider-neutral media domain model.
+//!
+//! This is the *single source of truth* for what a media item is across the
+//! whole app. Rust (repositories, player, downloads) uses these types directly;
+//! the frontend consumes the tauri-specta-generated projection in
+//! `src/lib/api/bindings.ts`. There is no second hand-written copy in either
+//! language, so the model cannot drift.
+//!
+//! No provider (Jellyfin) vocabulary belongs in this file. Translation from a
+//! provider's wire shape lives beside it in `from_jellyfin.rs` and is the only
+//! place provider terms touch the domain type.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+use serde::{Deserialize, Serialize};
+
+/// The kind of a media item — provider-neutral classification.
+///
+/// Replaces the stringly-typed `item_type` that carried Jellyfin's vocabulary
+/// (`"Audio"`, `"MusicAlbum"`, …) across the boundary. A closed enum means a
+/// typo or an unhandled kind is a compile error on the frontend, not a silent
+/// runtime miss across ~127 comparison sites.
+#[derive(specta::Type, Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
+#[serde(rename_all = "camelCase")]
+pub enum MediaKind {
+    // Music
+    Track,
+    Album,
+    Artist,
+    Playlist,
+    // Video
+    Movie,
+    Series,
+    Season,
+    Episode,
+    // Cast/crew
+    Person,
+    // Containers / live TV
+    /// A channel *container* the user drills into (Jellyfin `Channel`).
+    Channel,
+    Folder,
+    /// A live TV channel — playable, but a live stream with no seekable
+    /// timeline (no resume/seek). Jellyfin `TvChannel`/`LiveTvChannel`.
+    LiveChannel,
+    /// A playable leaf inside a channel (Jellyfin `ChannelFolderItem` that is
+    /// not itself a folder) — e.g. a plugin-channel VOD item that has no
+    /// dedicated item type but carries its own media streams. Playable and
+    /// seekable, unlike `LiveChannel`. Distinct from `Channel` (the container)
+    /// and from `Other` so the UI can route it to playback.
+    ChannelItem,
+    /// A kind we do not model explicitly. Reached only for provider item types
+    /// that map to nothing meaningful; consumers treat it like an opaque
+    /// container. The mapping must be *total* — it never panics — so this is the
+    /// safe sink for unknown strings. Also the `Default`, so a defaulted
+    /// `MediaItem` (see the dual-carry migration) is inert rather than a lie.
+    #[default]
+    Other,
+}
+
+/// The kind of a media stream within an item (audio track, video track,
+/// subtitle, …) — provider-neutral, replacing the stringly Jellyfin stream type.
+#[derive(specta::Type, Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
+#[serde(rename_all = "camelCase")]
+pub enum StreamKind {
+    Audio,
+    Video,
+    Subtitle,
+    /// Any stream kind we do not model explicitly (e.g. embedded image, data).
+    #[default]
+    Other,
+}
+
+impl MediaKind {
+    /// True for kinds that are containers/collections rather than playable leaves.
+    /// Presentation-neutral helper the backend can use for e.g. drill-vs-play.
+    // Consumed by later migration phases (drill-vs-play routing); kept now so the
+    // domain surface is complete alongside the type it describes.
+    #[allow(dead_code)]
+    pub fn is_container(self) -> bool {
+        matches!(
+            self,
+            MediaKind::Album
+                | MediaKind::Artist
+                | MediaKind::Series
+                | MediaKind::Season
+                | MediaKind::Playlist
+                | MediaKind::Channel
+                | MediaKind::Folder
+        )
+    }
+}

src-tauri/src/domain/mod.rs

@@ -0,0 +1,10 @@
+//! Canonical, provider-neutral domain model — the single source of truth for
+//! the app's core data shapes, shared with the frontend via generated bindings.
+//!
+//! Spec: docs/specs/frontend-domain-model.md
+
+pub mod from_jellyfin;
+pub mod media;
+
+pub use from_jellyfin::{kind_from_jellyfin, stream_kind_from_jellyfin, ticks_to_ms};
+pub use media::{MediaKind, StreamKind};

src-tauri/src/download/cache.rs

@@ -36,7 +36,7 @@ impl Default for CacheConfig {
             album_affinity_enabled: true,
             album_affinity_threshold: 3,
             storage_limit: 10 * 1024 * 1024 * 1024, // 10GB
-            wifi_only: false, // Allow preloading on any connection by default
+            wifi_only: false,                       // Allow preloading on any connection by default
         }
     }
 }
@@ -64,11 +64,20 @@ impl SmartCache {
         }
     }
 
-    /// Check if should pre-cache queue items
+    /// Check if should pre-cache queue items.
+    ///
+    /// Note this deliberately does NOT consult `wifi_only`. It used to return
+    /// `queue_precache_enabled && !wifi_only`, which disabled precaching
+    /// outright whenever the user enabled WiFi-only — regardless of the network
+    /// actually in use. The network check now lives in the download queue pump
+    /// (`downloads_allowed_on_current_network`), which is the single gate for
+    /// all download traffic, so this only answers "is precaching enabled?".
+    ///
+    /// TRACES: UR-053 | DR-074
     pub fn should_precache_queue(&self) -> bool {
         self.config
             .lock()
-            .map(|cfg| cfg.queue_precache_enabled && !cfg.wifi_only)
+            .map(|cfg| cfg.queue_precache_enabled)
             .unwrap_or(false)
     }
 
@@ -225,7 +234,10 @@ impl SmartCache {
                 "DELETE FROM downloads WHERE id = ?",
                 vec![QueryParam::Int64(id)],
             );
-            db_service.execute(delete_query).await.map_err(|e| e.to_string())?;
+            db_service
+                .execute(delete_query)
+                .await
+                .map_err(|e| e.to_string())?;
 
             freed += size as u64;
         }
@@ -279,6 +291,19 @@ mod tests {
         assert!(cache.should_precache_queue());
     }
 
+    #[test]
+    fn test_wifi_only_does_not_disable_precaching() {
+        // wifi_only must not short-circuit precaching: the network gate lives in
+        // the download pump, which checks the *actual* transport. Enabling
+        // WiFi-only while on WiFi should still precache.
+        let mut config = CacheConfig::default();
+        config.queue_precache_enabled = true;
+        config.wifi_only = true;
+
+        let cache = SmartCache::new(config);
+        assert!(cache.should_precache_queue());
+    }
+
     #[tokio::test]
     async fn test_storage_limit_check() {
         use crate::storage::db_service::RusqliteService;

src-tauri/src/download/events.rs

@@ -8,16 +8,10 @@ use serde::{Deserialize, Serialize};
 pub enum DownloadEvent {
     /// Download has been queued
     #[serde(rename_all = "camelCase")]
-    Queued {
-        download_id: i64,
-        item_id: String,
-    },
+    Queued { download_id: i64, item_id: String },
     /// Download has started
     #[serde(rename_all = "camelCase")]
-    Started {
-        download_id: i64,
-        item_id: String,
-    },
+    Started { download_id: i64, item_id: String },
     /// Download progress update
     #[serde(rename_all = "camelCase")]
     Progress {
@@ -43,16 +37,15 @@ pub enum DownloadEvent {
     },
     /// Download paused
     #[serde(rename_all = "camelCase")]
-    Paused {
-        download_id: i64,
-        item_id: String,
-    },
+    Paused { download_id: i64, item_id: String },
     /// Download cancelled
     #[serde(rename_all = "camelCase")]
-    Cancelled {
-        download_id: i64,
-        item_id: String,
-    },
+    Cancelled { download_id: i64, item_id: String },
+    /// The queue is holding: WiFi-only is enabled and the current network is
+    /// metered/cellular. Pending rows stay pending and resume on network change.
+    ///
+    /// TRACES: UR-053 | DR-074
+    WaitingForNetwork,
 }
 
 #[cfg(test)]
@@ -98,9 +91,21 @@ mod tests {
         let json = serde_json::to_string(&event).unwrap();
         assert!(json.contains("\"type\":\"completed\""));
         // Verify camelCase field names
-        assert!(json.contains("\"downloadId\":42"), "Expected downloadId (camelCase), got: {}", json);
-        assert!(json.contains("\"itemId\":\"song456\""), "Expected itemId (camelCase), got: {}", json);
-        assert!(json.contains("\"filePath\":"), "Expected filePath (camelCase), got: {}", json);
+        assert!(
+            json.contains("\"downloadId\":42"),
+            "Expected downloadId (camelCase), got: {}",
+            json
+        );
+        assert!(
+            json.contains("\"itemId\":\"song456\""),
+            "Expected itemId (camelCase), got: {}",
+            json
+        );
+        assert!(
+            json.contains("\"filePath\":"),
+            "Expected filePath (camelCase), got: {}",
+            json
+        );
 
         // Verify roundtrip
         let deserialized: DownloadEvent = serde_json::from_str(&json).unwrap();

src-tauri/src/download/mod.rs

@@ -8,11 +8,12 @@
 
 pub mod cache;
 pub mod events;
+pub mod network;
 pub mod worker;
 
 use crate::utils::lock::MutexSafe;
-use std::path::PathBuf;
 use std::collections::HashSet;
+use std::path::PathBuf;
 use std::sync::{Arc, Mutex};
 
 pub use worker::DownloadWorker;

src-tauri/src/download/network.rs

@@ -0,0 +1,196 @@
+//! Network transport classification for the WiFi-only download gate.
+//!
+//! This answers "what kind of connection are we on?", which is orthogonal to
+//! the `ConnectivityMonitor`'s "is the server reachable?". The download queue
+//! pump consults this before starting pending rows when the user has enabled
+//! WiFi-only downloads.
+//!
+//! On Android the real transport is read from `NetworkCapabilities` in
+//! `NetworkTypeMonitor.kt` and pushed in from the frontend. On desktop there is
+//! no metered-connection concept worth enforcing, so we report `Ethernet`,
+//! which is always acceptable — gating desktop downloads would be a regression.
+
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use tokio::sync::RwLock;
+
+/// Kind of network transport currently active.
+///
+/// Mirrors the string constants in `NetworkTypeMonitor.kt`; the two must stay
+/// in sync (the serde rename below is what the frontend sends).
+///
+/// TRACES: UR-053 | DR-074
+#[derive(specta::Type, Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum NetworkType {
+    /// No active network.
+    None,
+    /// WiFi (may still be metered — check `unmetered`).
+    Wifi,
+    /// Wired ethernet, typical on Android TV and desktop.
+    Ethernet,
+    /// Mobile data — never acceptable when wifi-only is enabled.
+    Cellular,
+    /// Some other transport (VPN over unknown carrier, Bluetooth tethering, …).
+    Other,
+    /// Could not determine the transport.
+    Unknown,
+}
+
+/// Current network transport plus whether it is metered.
+///
+/// TRACES: UR-053 | DR-074
+#[derive(specta::Type, Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct NetworkState {
+    pub network_type: NetworkType,
+    /// Whether the active network is unmetered (Android `NET_CAPABILITY_NOT_METERED`).
+    pub unmetered: bool,
+}
+
+impl Default for NetworkState {
+    fn default() -> Self {
+        // Desktop default: wired and unmetered, so the gate never blocks there.
+        // Android overwrites this as soon as the frontend reports the real state.
+        Self {
+            network_type: NetworkType::Ethernet,
+            unmetered: true,
+        }
+    }
+}
+
+impl NetworkState {
+    /// Whether downloads may run right now given the wifi-only preference.
+    ///
+    /// Ethernet counts as acceptable — it is unmetered in practice and is what
+    /// Android TV devices use. Cellular never does. `None`/`Unknown` fail
+    /// closed: if we cannot tell what we are on, we do not spend the user's
+    /// mobile data to find out.
+    ///
+    /// TRACES: UR-053 | DR-074
+    pub fn allows_download(&self, wifi_only: bool) -> bool {
+        if !wifi_only {
+            return true;
+        }
+        match self.network_type {
+            NetworkType::Cellular | NetworkType::None | NetworkType::Unknown => false,
+            // Require unmetered so metered WiFi hotspots (backed by the very
+            // cellular data this setting protects) are excluded too.
+            NetworkType::Wifi | NetworkType::Ethernet | NetworkType::Other => self.unmetered,
+        }
+    }
+}
+
+/// Shared, mutable view of the current network transport.
+///
+/// Cheap to clone; the frontend updates it via `set_network_state` whenever
+/// Android reports a network change.
+#[derive(Clone, Default)]
+pub struct NetworkStateHandle {
+    state: Arc<RwLock<NetworkState>>,
+}
+
+impl NetworkStateHandle {
+    pub fn new() -> Self {
+        Self {
+            state: Arc::new(RwLock::new(NetworkState::default())),
+        }
+    }
+
+    pub async fn get(&self) -> NetworkState {
+        *self.state.read().await
+    }
+
+    pub async fn set(&self, new_state: NetworkState) {
+        *self.state.write().await = new_state;
+    }
+
+    /// Whether downloads may run right now given the wifi-only preference.
+    pub async fn allows_download(&self, wifi_only: bool) -> bool {
+        self.state.read().await.allows_download(wifi_only)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn state(network_type: NetworkType, unmetered: bool) -> NetworkState {
+        NetworkState {
+            network_type,
+            unmetered,
+        }
+    }
+
+    #[test]
+    fn wifi_only_off_allows_every_transport() {
+        for t in [
+            NetworkType::None,
+            NetworkType::Wifi,
+            NetworkType::Ethernet,
+            NetworkType::Cellular,
+            NetworkType::Other,
+            NetworkType::Unknown,
+        ] {
+            assert!(
+                state(t, false).allows_download(false),
+                "{t:?} should be allowed when wifi_only is off"
+            );
+        }
+    }
+
+    #[test]
+    fn cellular_is_blocked_when_wifi_only() {
+        // Even if somehow flagged unmetered, cellular is never acceptable.
+        assert!(!state(NetworkType::Cellular, true).allows_download(true));
+        assert!(!state(NetworkType::Cellular, false).allows_download(true));
+    }
+
+    #[test]
+    fn unmetered_wifi_and_ethernet_are_allowed() {
+        assert!(state(NetworkType::Wifi, true).allows_download(true));
+        assert!(state(NetworkType::Ethernet, true).allows_download(true));
+    }
+
+    #[test]
+    fn metered_wifi_is_blocked() {
+        // A phone hotspot reports as WiFi but is metered — blocking it is the
+        // whole point of checking NOT_METERED rather than the transport alone.
+        assert!(!state(NetworkType::Wifi, false).allows_download(true));
+    }
+
+    #[test]
+    fn unknown_and_none_fail_closed() {
+        assert!(!state(NetworkType::Unknown, true).allows_download(true));
+        assert!(!state(NetworkType::None, true).allows_download(true));
+    }
+
+    #[test]
+    fn desktop_default_is_never_gated() {
+        assert!(NetworkState::default().allows_download(true));
+    }
+
+    #[tokio::test]
+    async fn handle_roundtrips_state() {
+        let handle = NetworkStateHandle::new();
+        assert!(handle.allows_download(true).await);
+
+        handle.set(state(NetworkType::Cellular, false)).await;
+        assert!(!handle.allows_download(true).await);
+        assert!(handle.allows_download(false).await);
+        assert_eq!(handle.get().await.network_type, NetworkType::Cellular);
+    }
+
+    #[test]
+    fn network_type_serializes_lowercase() {
+        // Must match the string constants in NetworkTypeMonitor.kt.
+        assert_eq!(
+            serde_json::to_string(&NetworkType::Wifi).unwrap(),
+            "\"wifi\""
+        );
+        assert_eq!(
+            serde_json::to_string(&NetworkType::Cellular).unwrap(),
+            "\"cellular\""
+        );
+    }
+}

src-tauri/src/download/worker.rs

@@ -60,7 +60,11 @@ impl DownloadWorker {
     }
 
     /// Attempt a single download
-    async fn try_download<F>(&self, task: &DownloadTask, on_progress: &F) -> Result<DownloadResult, DownloadError>
+    async fn try_download<F>(
+        &self,
+        task: &DownloadTask,
+        on_progress: &F,
+    ) -> Result<DownloadResult, DownloadError>
     where
         F: Fn(u64, Option<u64>) + Send + Sync,
     {
@@ -74,10 +78,7 @@ impl DownloadWorker {
         // Check for partial download
         let temp_path = task.target_path.with_extension("part");
         let existing_bytes = if temp_path.exists() {
-            fs::metadata(&temp_path)
-                .await
-                .map(|m| m.len())
-                .unwrap_or(0)
+            fs::metadata(&temp_path).await.map(|m| m.len()).unwrap_or(0)
         } else {
             0
         };
@@ -105,14 +106,17 @@ impl DownloadWorker {
             .get(reqwest::header::CONTENT_LENGTH)
             .and_then(|v| v.to_str().ok())
             .and_then(|v| v.parse::<u64>().ok())
-            .map(|len| if existing_bytes > 0 { len + existing_bytes } else { len });
+            .map(|len| {
+                if existing_bytes > 0 {
+                    len + existing_bytes
+                } else {
+                    len
+                }
+            });
 
         // Open file for appending
         let mut file = if existing_bytes > 0 {
-            fs::OpenOptions::new()
-                .append(true)
-                .open(&temp_path)
-                .await
+            fs::OpenOptions::new().append(true).open(&temp_path).await
         } else {
             fs::File::create(&temp_path).await
         }
@@ -206,9 +210,18 @@ mod tests {
 
     #[test]
     fn test_exponential_backoff() {
-        assert_eq!(DownloadWorker::exponential_backoff(1), Duration::from_secs(5));
-        assert_eq!(DownloadWorker::exponential_backoff(2), Duration::from_secs(15));
-        assert_eq!(DownloadWorker::exponential_backoff(3), Duration::from_secs(45));
+        assert_eq!(
+            DownloadWorker::exponential_backoff(1),
+            Duration::from_secs(5)
+        );
+        assert_eq!(
+            DownloadWorker::exponential_backoff(2),
+            Duration::from_secs(15)
+        );
+        assert_eq!(
+            DownloadWorker::exponential_backoff(3),
+            Duration::from_secs(45)
+        );
     }
 
     #[test]

src-tauri/src/jellyfin/client.rs

@@ -72,7 +72,8 @@ impl JellyfinClient {
 
         log::debug!("[JellyfinClient] GET {}", endpoint);
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .get(&url)
             .header("X-Emby-Authorization", self.get_auth_header())
             .send()
@@ -83,13 +84,24 @@ impl JellyfinClient {
             })?;
 
         let status = response.status();
-        log::debug!("[JellyfinClient] Response status for {}: {}", endpoint, status);
+        log::debug!(
+            "[JellyfinClient] Response status for {}: {}",
+            endpoint,
+            status
+        );
 
         if !status.is_success() {
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
             log::error!("[JellyfinClient] Request failed: {} {}", status, endpoint);
             log::error!("[JellyfinClient] Response: {}", error_text);
-            return Err(format!("Jellyfin API error {}: {}", status.as_u16(), error_text));
+            return Err(format!(
+                "Jellyfin API error {}: {}",
+                status.as_u16(),
+                error_text
+            ));
         }
 
         // Get the response text first so we can log it
@@ -100,9 +112,15 @@ impl JellyfinClient {
 
         // Log the raw response for sessions endpoint to help debug
         if endpoint.contains("/Sessions") {
-            debug!("[JellyfinClient] Raw response for {}: {}", endpoint,
+            debug!(
+                "[JellyfinClient] Raw response for {}: {}",
+                endpoint,
                 if response_text.len() > 500 {
-                    format!("{}... (truncated, {} bytes total)", &response_text[..500], response_text.len())
+                    format!(
+                        "{}... (truncated, {} bytes total)",
+                        &response_text[..500],
+                        response_text.len()
+                    )
                 } else {
                     response_text.clone()
                 }
@@ -112,7 +130,8 @@ impl JellyfinClient {
         // Parse the response text as JSON
         let data = serde_json::from_str::<T>(&response_text).map_err(|e| {
             log::error!("[JellyfinClient] Failed to parse response: {}", e);
-            log::error!("[JellyfinClient] Response was: {}",
+            log::error!(
+                "[JellyfinClient] Response was: {}",
                 if response_text.len() > 200 {
                     format!("{}...", &response_text[..200])
                 } else {
@@ -132,7 +151,8 @@ impl JellyfinClient {
 
         log::debug!("[JellyfinClient] POST {} to {}", endpoint, url);
 
-        let response: reqwest::Response = self.http_client
+        let response: reqwest::Response = self
+            .http_client
             .post(&url)
             .header("Content-Type", "application/json")
             .header("X-Emby-Authorization", self.get_auth_header())
@@ -145,13 +165,24 @@ impl JellyfinClient {
             })?;
 
         let status = response.status();
-        log::debug!("[JellyfinClient] Response status for {}: {}", endpoint, status);
+        log::debug!(
+            "[JellyfinClient] Response status for {}: {}",
+            endpoint,
+            status
+        );
 
         if !status.is_success() {
-            let error_text: String = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
+            let error_text: String = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
             log::error!("[JellyfinClient] Request failed: {} {}", status, endpoint);
             log::error!("[JellyfinClient] Response: {}", error_text);
-            return Err(format!("Jellyfin API error {}: {}", status.as_u16(), error_text));
+            return Err(format!(
+                "Jellyfin API error {}: {}",
+                status.as_u16(),
+                error_text
+            ));
         }
 
         log::debug!("[JellyfinClient] Request successful for {}", endpoint);
@@ -193,7 +224,7 @@ impl JellyfinClient {
     }
 
     /// Report playback progress to Jellyfin
-    #[allow(dead_code)]  // Will be used when playback_reporting is integrated
+    #[allow(dead_code)] // Will be used when playback_reporting is integrated
     pub async fn report_playback_progress(
         &self,
         item_id: String,
@@ -220,9 +251,17 @@ impl JellyfinClient {
         start_position_ticks: Option<i64>,
     ) -> Result<(), String> {
         log::info!("[JellyfinClient] Playing on session: {}", session_id);
-        log::info!("[JellyfinClient] Item IDs: {:?}, Start index: {}", item_ids, start_index);
-        debug!("[JellyfinClient] play_on_session called: session={}, {} items, start_index={}",
-                  session_id, item_ids.len(), start_index);
+        log::info!(
+            "[JellyfinClient] Item IDs: {:?}, Start index: {}",
+            item_ids,
+            start_index
+        );
+        debug!(
+            "[JellyfinClient] play_on_session called: session={}, {} items, start_index={}",
+            session_id,
+            item_ids.len(),
+            start_index
+        );
 
         // Build URL with query parameters (Jellyfin expects PascalCase query params)
         let mut url = format!(
@@ -244,10 +283,15 @@ impl JellyfinClient {
         log::info!("[JellyfinClient] POST {}", url);
         debug!("[JellyfinClient] Full URL length: {} chars", url.len());
         // Don't log full URL as it may contain sensitive tokens, just log the endpoint
-        debug!("[JellyfinClient] POST to Sessions/{}/Playing with {} itemIds", session_id, item_ids.len());
+        debug!(
+            "[JellyfinClient] POST to Sessions/{}/Playing with {} itemIds",
+            session_id,
+            item_ids.len()
+        );
 
         debug!("[JellyfinClient] Sending HTTP POST request...");
-        let response = self.http_client
+        let response = self
+            .http_client
             .post(&url)
             .header("X-Emby-Authorization", self.get_auth_header())
             .send()
@@ -263,10 +307,21 @@ impl JellyfinClient {
         debug!("[JellyfinClient] Response status: {}", status);
 
         if !status.is_success() {
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
             log::error!("[JellyfinClient] Request failed: {}", error_text);
-            error!("[JellyfinClient] API error {}: {}", status.as_u16(), error_text);
-            return Err(format!("Jellyfin API error {}: {}", status.as_u16(), error_text));
+            error!(
+                "[JellyfinClient] API error {}: {}",
+                status.as_u16(),
+                error_text
+            );
+            return Err(format!(
+                "Jellyfin API error {}: {}",
+                status.as_u16(),
+                error_text
+            ));
         }
 
         log::info!("[JellyfinClient] Successfully sent play command to remote session");
@@ -280,7 +335,11 @@ impl JellyfinClient {
         session_id: String,
         command: &str,
     ) -> Result<(), String> {
-        self.post(&format!("/Sessions/{}/Playing/{}", session_id, command), &serde_json::json!({})).await
+        self.post(
+            &format!("/Sessions/{}/Playing/{}", session_id, command),
+            &serde_json::json!({}),
+        )
+        .await
     }
 
     /// Seek on a remote session
@@ -298,7 +357,8 @@ impl JellyfinClient {
             self.config.server_url, session_id, position_ticks
         );
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .post(&url)
             .header("X-Emby-Authorization", self.get_auth_header())
             .send()
@@ -307,11 +367,22 @@ impl JellyfinClient {
 
         let status = response.status();
         if !status.is_success() {
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
-            return Err(format!("Jellyfin API error {}: {}", status.as_u16(), error_text));
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
+            return Err(format!(
+                "Jellyfin API error {}: {}",
+                status.as_u16(),
+                error_text
+            ));
         }
 
-        log::info!("[JellyfinClient] Seek to {} ticks on session {}", position_ticks, session_id);
+        log::info!(
+            "[JellyfinClient] Seek to {} ticks on session {}",
+            position_ticks,
+            session_id
+        );
         Ok(())
     }
 
@@ -332,46 +403,42 @@ impl JellyfinClient {
             payload["Arguments"] = args;
         }
 
-        log::info!("[JellyfinClient] Sending GeneralCommand '{}' to session {} with payload: {}",
-                   command_name, session_id, serde_json::to_string(&payload).unwrap_or_default());
+        log::info!(
+            "[JellyfinClient] Sending GeneralCommand '{}' to session {} with payload: {}",
+            command_name,
+            session_id,
+            serde_json::to_string(&payload).unwrap_or_default()
+        );
 
-        self.post(
-            &format!("/Sessions/{}/Command", session_id),
-            &payload
-        ).await
+        self.post(&format!("/Sessions/{}/Command", session_id), &payload)
+            .await
     }
 
     /// Set volume on a remote session
-    pub async fn session_set_volume(
-        &self,
-        session_id: String,
-        volume: i32,
-    ) -> Result<(), String> {
+    pub async fn session_set_volume(&self, session_id: String, volume: i32) -> Result<(), String> {
         self.send_general_command(
             &session_id,
             "SetVolume",
             Some(serde_json::json!({ "Volume": volume.to_string() })),
-        ).await
+        )
+        .await
     }
 
     /// Toggle mute on a remote session
-    pub async fn session_toggle_mute(
-        &self,
-        session_id: String,
-    ) -> Result<(), String> {
+    pub async fn session_toggle_mute(&self, session_id: String) -> Result<(), String> {
         log::info!("[JellyfinClient] Toggling mute on session {}", session_id);
 
-        self.send_general_command(
-            &session_id,
-            "ToggleMute",
-            None,
-        ).await
+        self.send_general_command(&session_id, "ToggleMute", None)
+            .await
     }
 
     /// Get all active sessions
     pub async fn get_sessions(&self) -> Result<Vec<SessionInfo>, String> {
         let sessions: Vec<SessionInfo> = self.get("/Sessions").await?;
-        info!("[JellyfinClient] Fetched {} sessions from API", sessions.len());
+        info!(
+            "[JellyfinClient] Fetched {} sessions from API",
+            sessions.len()
+        );
         for session in &sessions {
             debug!("[JellyfinClient] Session: id={:?}, device={:?}, client={:?}, supportsRemoteControl={}",
                 session.id, session.device_name, session.client, session.supports_remote_control);
@@ -382,7 +449,9 @@ impl JellyfinClient {
     /// Get a specific session by ID
     pub async fn get_session(&self, session_id: &str) -> Result<Option<SessionInfo>, String> {
         let sessions = self.get_sessions().await?;
-        Ok(sessions.into_iter().find(|s| s.id.as_deref() == Some(session_id)))
+        Ok(sessions
+            .into_iter()
+            .find(|s| s.id.as_deref() == Some(session_id)))
     }
 
     // --- JellyLMS multi-room sync groups -----------------------------------
@@ -415,12 +484,14 @@ impl JellyfinClient {
 
     /// Remove a single LMS player from whatever sync group it's in.
     pub async fn lms_unsync_player(&self, mac: &str) -> Result<(), String> {
-        self.delete(&format!("/JellyLms/SyncGroups/Players/{}", mac)).await
+        self.delete(&format!("/JellyLms/SyncGroups/Players/{}", mac))
+            .await
     }
 
     /// Dissolve an entire LMS sync group, identified by its master's MAC.
     pub async fn lms_dissolve_sync_group(&self, master_mac: &str) -> Result<(), String> {
-        self.delete(&format!("/JellyLms/SyncGroups/{}", master_mac)).await
+        self.delete(&format!("/JellyLms/SyncGroups/{}", master_mac))
+            .await
     }
 
     /// Make a DELETE request to the Jellyfin API (used by the JellyLMS endpoints).
@@ -429,7 +500,8 @@ impl JellyfinClient {
 
         log::debug!("[JellyfinClient] DELETE {}", endpoint);
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .delete(&url)
             .header("X-Emby-Authorization", self.get_auth_header())
             .send()
@@ -438,8 +510,15 @@ impl JellyfinClient {
 
         let status = response.status();
         if !status.is_success() {
-            let error_text = response.text().await.unwrap_or_else(|_| "Unknown error".to_string());
-            return Err(format!("Jellyfin API error {}: {}", status.as_u16(), error_text));
+            let error_text = response
+                .text()
+                .await
+                .unwrap_or_else(|_| "Unknown error".to_string());
+            return Err(format!(
+                "Jellyfin API error {}: {}",
+                status.as_u16(),
+                error_text
+            ));
         }
         Ok(())
     }
@@ -570,7 +649,6 @@ pub struct PlayState {
     pub shuffle_mode: Option<String>,
 }
 
-
 #[cfg(test)]
 mod tests {
     use super::*;

src-tauri/src/jellyfin/http_client.rs

@@ -40,7 +40,7 @@ pub enum ErrorKind {
 /// Enhanced HTTP client with retry logic and error classification
 #[derive(Clone)]
 pub struct HttpClient {
-    pub(crate) client: Client,  // Make accessible within crate for custom requests
+    pub(crate) client: Client, // Make accessible within crate for custom requests
     config: HttpConfig,
 }
 
@@ -131,18 +131,15 @@ impl HttpClient {
     /// Check if a request should be retried based on the error
     pub fn should_retry(error: &reqwest::Error) -> bool {
         match Self::classify_error(error) {
-            ErrorKind::Network => true,  // Retry network errors
-            ErrorKind::Server => true,   // Retry 5xx server errors
+            ErrorKind::Network => true,         // Retry network errors
+            ErrorKind::Server => true,          // Retry 5xx server errors
             ErrorKind::Authentication => false, // Don't retry 401/403
-            ErrorKind::Client => false,  // Don't retry other 4xx errors
+            ErrorKind::Client => false,         // Don't retry other 4xx errors
         }
     }
 
     /// Make a request with automatic retry on network errors
-    pub async fn request_with_retry(
-        &self,
-        request: Request,
-    ) -> Result<Response, reqwest::Error> {
+    pub async fn request_with_retry(&self, request: Request) -> Result<Response, reqwest::Error> {
         let max_retries = self.config.max_retries;
         let mut last_error: Option<reqwest::Error> = None;
 
@@ -192,31 +189,6 @@ impl HttpClient {
         Err(last_error.unwrap())
     }
 
-    /// Make a GET request with retry
-    pub async fn get_with_retry(&self, url: &str) -> Result<Response, reqwest::Error> {
-        let request = self.client.get(url).build()?;
-        self.request_with_retry(request).await
-    }
-
-    /// Make a GET request and deserialize JSON response with retry
-    pub async fn get_json_with_retry<T: DeserializeOwned>(
-        &self,
-        url: &str,
-    ) -> Result<T, String> {
-        let response = self.get_with_retry(url).await
-            .map_err(|e| format!("Request failed: {}", e))?;
-
-        if !response.status().is_success() {
-            let status = response.status();
-            let error_text = response.text().await
-                .unwrap_or_else(|_| "Unknown error".to_string());
-            return Err(format!("HTTP {}: {}", status, error_text));
-        }
-
-        response.json::<T>().await
-            .map_err(|e| format!("Failed to parse JSON: {}", e))
-    }
-
     /// Make a GET request and deserialize JSON with a short timeout and no retries.
     ///
     /// Intended for the initial "connect to server" probe on the login screen:
@@ -258,17 +230,17 @@ impl HttpClient {
 
     /// Quick ping to check if a server is reachable (no retry)
     pub async fn ping(&self, url: &str) -> bool {
-        let request = self.client.get(url)
+        let request = self
+            .client
+            .get(url)
             .timeout(Duration::from_secs(5)) // Shorter timeout for ping
             .build();
 
         match request {
-            Ok(req) => {
-                match self.client.execute(req).await {
-                    Ok(response) => response.status().is_success(),
-                    Err(_) => false,
-                }
-            }
+            Ok(req) => match self.client.execute(req).await {
+                Ok(response) => response.status().is_success(),
+                Err(_) => false,
+            },
             Err(_) => false,
         }
     }

src-tauri/src/jellyfin/types.rs

@@ -33,7 +33,7 @@ pub struct PlaybackStoppedRequest {
 /// Request body for reporting playback progress
 #[derive(Debug, Serialize)]
 #[serde(rename_all = "PascalCase")]
-#[allow(dead_code)]  // Will be used when playback_reporting is integrated
+#[allow(dead_code)] // Will be used when playback_reporting is integrated
 pub struct PlaybackProgressRequest {
     pub item_id: String,
     pub position_ticks: i64,

src-tauri/src/lib.rs

@@ -2,6 +2,7 @@ mod auth;
 mod commands;
 mod connectivity;
 mod credentials;
+mod domain;
 mod download;
 mod jellyfin;
 mod playback_mode;
@@ -14,120 +15,292 @@ mod storage;
 mod thumbnail;
 pub mod utils;
 
-use std::sync::{Arc, Mutex};
-use tokio::sync::Mutex as TokioMutex;
-use tauri::{Emitter, Manager};
-use tauri_specta::Builder;
-use log::{error, info};
 #[cfg(target_os = "android")]
 use log::warn;
+use log::{error, info};
+use std::sync::{Arc, Mutex};
+use tauri::{Emitter, Manager};
+use tauri_specta::Builder;
+use tokio::sync::Mutex as TokioMutex;
 
-use commands::{
-    sync_full_catalog, catalog_sync_status, set_show_server_catalog, resume_queued_downloads,
-    cancel_download, clear_stale_downloads, delete_album_downloads, delete_all_downloads, delete_download,
-    download_album, download_item, download_item_and_start, download_video, download_series, download_season,
-    get_download_storage_stats, get_downloads, get_download_manager_stats, set_max_concurrent_downloads,
-    get_smart_cache_stats, update_smart_cache_config, get_smart_cache_config, get_album_recommendations,
-    get_album_affinity_status,
-    mark_download_completed, mark_download_failed, start_download, enqueue_download, enqueue_video_downloads,
-    pin_item, unpin_item, is_item_pinned,
-    offline_get_items, offline_is_available, offline_search, pause_download, resume_download,
-    player_cycle_repeat, player_get_audio_settings, player_get_queue, player_get_status,
-    player_get_video_settings, player_next, player_pause, player_play, player_play_album_track,
-    player_play_item, player_play_queue, player_play_tracks, player_previous, player_seek, player_seek_video, player_set_audio_settings, player_set_audio_track, player_switch_audio_track,
-    player_set_subtitle_track, player_set_video_settings, player_set_volume, player_toggle_mute, player_stop, player_toggle,
-    player_toggle_shuffle,
-    // Sleep timer and autoplay commands
-    player_set_sleep_timer, player_cancel_sleep_timer, player_get_sleep_timer,
-    player_get_autoplay_settings, player_set_autoplay_settings,
-    player_cancel_autoplay_countdown, player_play_next_episode, player_on_playback_ended,
-    // HTML5 video state-report commands
-    player_report_state, player_report_position, player_report_media_loaded,
-    // Queue manipulation commands
-    player_add_to_queue, player_add_track_by_id, player_add_tracks_by_ids,
-    player_remove_from_queue, player_move_in_queue, player_skip_to,
-    // Preload commands
-    player_preload_upcoming, player_set_cache_config, player_get_cache_config,
-    // Jellyfin reporting commands
-    player_configure_jellyfin, player_disable_jellyfin,
-    // Session management commands
-    player_get_session, player_dismiss_session,
-    // Remote session control commands
-    remote_play_on_session, remote_send_command, remote_session_seek, remote_session_set_volume,
-    remote_session_toggle_mute,
-    // LMS multi-room sync group commands
-    lms_get_sync_groups, lms_create_sync_group, lms_unsync_player, lms_dissolve_sync_group,
-    // Session polling commands
-    sessions_set_polling_hint, sessions_poll_now, SessionPollerWrapper,
-    // Playback mode commands
-    playback_mode_get_current, playback_mode_set, playback_mode_is_transferring,
-    playback_mode_transfer_to_remote, playback_mode_transfer_to_local, playback_mode_set_transferring,
-    playback_mode_get_remote_status,
-    // Playback reporting commands
-    playback_reporter_init, playback_reporter_destroy,
-    playback_report_start, playback_report_progress, playback_report_stopped,
-    playback_mark_played, PlaybackReporterWrapper,
-    // Auth commands
-    auth_initialize, auth_connect_to_server, auth_login, auth_verify_session,
-    auth_logout, auth_get_session, auth_set_session, auth_start_verification,
-    auth_stop_verification, auth_reauthenticate,
-    // Device commands
-    device_get_id, device_set_id,
-    // Connectivity commands
-    connectivity_check_server, connectivity_set_server_url, connectivity_get_status,
-    connectivity_start_monitoring, connectivity_stop_monitoring,
-    connectivity_mark_reachable, connectivity_mark_unreachable,
-    // Storage commands
-    storage_delete_server, storage_delete_user, storage_get_access_token,
-    storage_get_active_session, storage_get_active_user, storage_get_path,
-    storage_get_playback_progress, storage_get_security_status, storage_get_servers, storage_get_size,
-    storage_get_users, storage_init, storage_mark_played, storage_mark_synced, storage_save_server,
-    storage_save_user, storage_set_active_user, storage_toggle_favorite, storage_update_playback_progress,
-    storage_update_playback_context,
-    // Offline cache commands
-    storage_get_libraries, storage_get_items, storage_get_item, storage_search_items,
-    storage_save_library, storage_save_item, storage_get_pending_sync_count,
-    // Sync queue commands
-    sync_queue_mutation, sync_get_pending, sync_mark_processing, sync_mark_completed,
-    sync_mark_failed, sync_get_pending_count, sync_cleanup_completed, sync_clear_user,
-    // Thumbnail cache and image commands
-    thumbnail_get_cached, thumbnail_save, thumbnail_get_stats, thumbnail_set_limit,
-    thumbnail_clear_cache, thumbnail_delete_item, image_get_url,
-    // People cache commands
-    storage_save_person, storage_get_person, storage_save_item_people, storage_get_item_people,
-    // Series audio preferences
-    storage_save_series_audio_preference, storage_get_series_audio_preference,
-    // Repository commands
-    repository_create, repository_destroy, repository_get_libraries, repository_get_items,
-    repository_get_item, repository_jray_actors_at, repository_get_latest_items, repository_get_resume_items,
-    repository_get_next_up_episodes, repository_get_recently_played_audio, repository_get_resume_movies,
-    repository_get_rediscover_albums,
-    repository_get_genres, repository_search, repository_get_playback_info,
-    repository_get_video_stream_url, repository_get_audio_stream_url,
-    repository_get_live_tv_channels, repository_get_channels, repository_open_live_stream,
-    repository_report_playback_start, repository_report_playback_progress, repository_report_playback_stopped,
-    repository_get_image_url, repository_mark_favorite, repository_unmark_favorite,
-    repository_get_person, repository_get_items_by_person, repository_get_similar_items,
-    repository_get_subtitle_url, repository_get_video_download_url,
-    // Playlist commands
-    playlist_create, playlist_delete, playlist_rename, playlist_get_items,
-    playlist_add_items, playlist_remove_items, playlist_move_item,
-    // Conversion commands
-    format_time_seconds, format_time_seconds_long, convert_ticks_to_seconds,
-    calc_progress, convert_percent_to_volume,
-    AuthManagerWrapper, SessionVerifierWrapper,
-    ConnectivityMonitorWrapper, CredentialStoreWrapper, DatabaseWrapper, PlayerStateWrapper,
-    MediaSessionManagerWrapper, VideoSettingsWrapper, ThumbnailCacheWrapper, SmartCacheWrapper,
-    PlaybackModeManagerWrapper, RepositoryManagerWrapper, DownloadManagerWrapper,
-};
-#[cfg(target_os = "android")]
-use playback_mode::PlaybackModeManager;
 use auth::AuthManager;
+use commands::{
+    auth_connect_to_server,
+    auth_get_session,
+    // Auth commands
+    auth_initialize,
+    auth_login,
+    auth_logout,
+    auth_reauthenticate,
+    auth_set_session,
+    auth_start_verification,
+    auth_stop_verification,
+    auth_verify_session,
+    calc_progress,
+    cancel_download,
+    catalog_sync_status,
+    clear_stale_downloads,
+    // Connectivity commands
+    connectivity_check_server,
+    connectivity_get_status,
+    connectivity_mark_reachable,
+    connectivity_mark_unreachable,
+    connectivity_set_server_url,
+    connectivity_start_monitoring,
+    connectivity_stop_monitoring,
+    convert_percent_to_volume,
+    convert_ticks_to_seconds,
+    delete_album_downloads,
+    delete_all_downloads,
+    delete_download,
+    delete_downloads_under,
+    // Device commands
+    device_get_id,
+    device_set_id,
+    download_album,
+    download_item,
+    download_item_and_start,
+    download_season,
+    download_series,
+    download_video,
+    enqueue_download,
+    enqueue_video_downloads,
+    // Conversion commands
+    format_time_seconds,
+    format_time_seconds_long,
+    get_album_affinity_status,
+    get_album_recommendations,
+    get_download_manager_stats,
+    get_download_storage_stats,
+    get_downloads,
+    get_downloads_allowed,
+    get_smart_cache_config,
+    get_smart_cache_stats,
+    image_get_url,
+    is_item_pinned,
+    lms_create_sync_group,
+    lms_dissolve_sync_group,
+    // LMS multi-room sync group commands
+    lms_get_sync_groups,
+    lms_unsync_player,
+    mark_download_completed,
+    mark_download_failed,
+    offline_get_items,
+    offline_is_available,
+    offline_search,
+    pause_download,
+    pin_item,
+    playback_mark_played,
+    // Playback mode commands
+    playback_mode_get_current,
+    playback_mode_get_remote_status,
+    playback_mode_is_transferring,
+    playback_mode_set,
+    playback_mode_set_transferring,
+    playback_mode_transfer_to_local,
+    playback_mode_transfer_to_remote,
+    playback_report_progress,
+    playback_report_start,
+    playback_report_stopped,
+    playback_reporter_destroy,
+    // Playback reporting commands
+    playback_reporter_init,
+    // Queue manipulation commands
+    player_add_to_queue,
+    player_add_track_by_id,
+    player_add_tracks_by_ids,
+    player_cancel_autoplay_countdown,
+    player_cancel_sleep_timer,
+    // Jellyfin reporting commands
+    player_configure_jellyfin,
+    player_cycle_repeat,
+    player_disable_jellyfin,
+    player_dismiss_session,
+    player_enter_background_audio,
+    player_exit_background_audio,
+    player_get_audio_settings,
+    player_get_autoplay_settings,
+    player_get_cache_config,
+    player_get_eq_presets,
+    player_get_queue,
+    // Session management commands
+    player_get_session,
+    player_get_sleep_timer,
+    player_get_status,
+    player_get_video_settings,
+    player_move_in_queue,
+    player_next,
+    player_on_playback_ended,
+    player_pause,
+    player_play,
+    player_play_album_track,
+    player_play_item,
+    player_play_next_episode,
+    player_play_queue,
+    player_play_tracks,
+    // Preload commands
+    player_preload_upcoming,
+    player_previous,
+    player_remove_from_queue,
+    player_report_media_loaded,
+    player_report_position,
+    // HTML5 video state-report commands
+    player_report_state,
+    player_seek,
+    player_seek_video,
+    player_set_audio_settings,
+    player_set_audio_track,
+    player_set_autoplay_settings,
+    player_set_cache_config,
+    // Sleep timer and autoplay commands
+    player_set_sleep_timer,
+    player_set_subtitle_track,
+    player_set_video_settings,
+    player_set_volume,
+    player_skip_to,
+    player_stop,
+    player_switch_audio_track,
+    player_toggle,
+    player_toggle_mute,
+    player_toggle_shuffle,
+    playlist_add_items,
+    // Playlist commands
+    playlist_create,
+    playlist_delete,
+    playlist_get_items,
+    playlist_move_item,
+    playlist_remove_items,
+    playlist_rename,
+    // Remote session control commands
+    remote_play_on_session,
+    remote_send_command,
+    remote_session_seek,
+    remote_session_set_volume,
+    remote_session_toggle_mute,
+    // Repository commands
+    repository_create,
+    repository_destroy,
+    repository_get_audio_only_stream_url_for_video,
+    repository_get_audio_stream_url,
+    repository_get_channels,
+    repository_get_download_disk_usage,
+    repository_get_downloaded_items,
+    repository_get_downloaded_libraries,
+    repository_get_genres,
+    repository_get_image_url,
+    repository_get_item,
+    repository_get_items,
+    repository_get_items_by_person,
+    repository_get_latest_items,
+    repository_get_libraries,
+    repository_get_live_tv_channels,
+    repository_get_next_up_episodes,
+    repository_get_person,
+    repository_get_playback_info,
+    repository_get_recently_played_audio,
+    repository_get_rediscover_albums,
+    repository_get_resume_items,
+    repository_get_resume_movies,
+    repository_get_similar_items,
+    repository_get_subtitle_url,
+    repository_get_video_download_url,
+    repository_get_video_stream_url,
+    repository_jray_actors_at,
+    repository_mark_favorite,
+    repository_open_live_stream,
+    repository_report_playback_progress,
+    repository_report_playback_start,
+    repository_report_playback_stopped,
+    repository_search,
+    repository_unmark_favorite,
+    resume_download,
+    resume_queued_downloads,
+    sessions_poll_now,
+    // Session polling commands
+    sessions_set_polling_hint,
+    set_max_concurrent_downloads,
+    set_network_state,
+    set_show_server_catalog,
+    start_download,
+    // Storage commands
+    storage_delete_server,
+    storage_delete_user,
+    storage_get_access_token,
+    storage_get_active_session,
+    storage_get_active_user,
+    storage_get_item,
+    storage_get_item_people,
+    storage_get_items,
+    // Offline cache commands
+    storage_get_libraries,
+    storage_get_path,
+    storage_get_pending_sync_count,
+    storage_get_person,
+    storage_get_playback_progress,
+    storage_get_security_status,
+    storage_get_series_audio_preference,
+    storage_get_servers,
+    storage_get_size,
+    storage_get_users,
+    storage_init,
+    storage_mark_played,
+    storage_mark_synced,
+    storage_save_item,
+    storage_save_item_people,
+    storage_save_library,
+    // People cache commands
+    storage_save_person,
+    // Series audio preferences
+    storage_save_series_audio_preference,
+    storage_save_server,
+    storage_save_user,
+    storage_search_items,
+    storage_set_active_user,
+    storage_toggle_favorite,
+    storage_update_playback_context,
+    storage_update_playback_progress,
+    sync_cleanup_completed,
+    sync_clear_user,
+    sync_full_catalog,
+    sync_get_pending,
+    sync_get_pending_count,
+    sync_mark_completed,
+    sync_mark_failed,
+    sync_mark_processing,
+    // Sync queue commands
+    sync_queue_mutation,
+    thumbnail_clear_cache,
+    thumbnail_delete_item,
+    // Thumbnail cache and image commands
+    thumbnail_get_cached,
+    thumbnail_get_stats,
+    thumbnail_save,
+    thumbnail_set_limit,
+    unpin_item,
+    update_smart_cache_config,
+    AuthManagerWrapper,
+    ConnectivityMonitorWrapper,
+    CredentialStoreWrapper,
+    DatabaseWrapper,
+    DownloadManagerWrapper,
+    MediaSessionManagerWrapper,
+    PlaybackModeManagerWrapper,
+    PlaybackReporterWrapper,
+    PlayerStateWrapper,
+    RepositoryManagerWrapper,
+    SessionPollerWrapper,
+    SessionVerifierWrapper,
+    SmartCacheWrapper,
+    ThumbnailCacheWrapper,
+    VideoSettingsWrapper,
+};
 use connectivity::ConnectivityMonitor;
 use credentials::CredentialStore;
 use download::cache::{CacheConfig as SmartCacheConfig, SmartCache};
 use download::DownloadManager;
 use jellyfin::{HttpClient, HttpConfig};
+#[cfg(target_os = "android")]
+use playback_mode::PlaybackModeManager;
 use player::{MediaSessionManager, PlayerBackend, PlayerController, TauriEventEmitter};
 // NullBackend is used both for platforms without a native backend AND as a graceful
 // fallback when a native backend (MPV/ExoPlayer) fails to initialize, so the app can
@@ -138,7 +311,7 @@ use player::NullBackend;
 use player::MpvBackend;
 use settings::VideoSettings;
 use storage::Database;
-use thumbnail::{ThumbnailCache, CacheConfig as ThumbnailCacheConfig};
+use thumbnail::{CacheConfig as ThumbnailCacheConfig, ThumbnailCache};
 
 #[cfg(target_os = "android")]
 use credentials::initialize_secure_storage;
@@ -147,7 +320,9 @@ use credentials::initialize_secure_storage;
 use player::ExoPlayerBackend;
 
 #[cfg(target_os = "android")]
-use player::{MediaCommandHandler, RemoteVolumeHandler, set_media_command_handler, set_remote_volume_handler};
+use player::{
+    set_media_command_handler, set_remote_volume_handler, MediaCommandHandler, RemoteVolumeHandler,
+};
 
 /// Handler for media commands from Android MediaSession (lockscreen/notification controls).
 ///
@@ -210,7 +385,11 @@ impl MediaSessionHandler {
                 "play" => client.send_session_command(session_id, "Unpause").await,
                 "pause" => client.send_session_command(session_id, "Pause").await,
                 "next" => client.send_session_command(session_id, "NextTrack").await,
-                "previous" => client.send_session_command(session_id, "PreviousTrack").await,
+                "previous" => {
+                    client
+                        .send_session_command(session_id, "PreviousTrack")
+                        .await
+                }
                 cmd if cmd.starts_with("seek:") => match cmd[5..].parse::<f64>() {
                     Ok(seconds) => {
                         let ticks = (seconds * 10_000_000.0) as i64;
@@ -297,7 +476,10 @@ impl RemoteVolumeHandler for RemoteVolumeSessionHandler {
         log::info!("[RemoteVolume] Spawning async task to send volume command...");
         tauri::async_runtime::spawn(async move {
             log::info!("[RemoteVolume] Async task started, calling send_remote_volume_command...");
-            match playback_mode.send_remote_volume_command(&command_str, volume).await {
+            match playback_mode
+                .send_remote_volume_command(&command_str, volume)
+                .await
+            {
                 Ok(_) => log::info!("[RemoteVolume] Volume command completed successfully"),
                 Err(e) => log::error!("[RemoteVolume] Failed to send volume command: {}", e),
             }
@@ -334,6 +516,12 @@ fn emit_backend_init_failed(app_handle: &tauri::AppHandle, backend: &'static str
 }
 
 /// Create the appropriate player backend for the current platform.
+// playback_reporter/position_throttler are consumed only by the native audio
+// backends (mpv/exo); on platforms using the webview audio backend they're unused.
+#[cfg_attr(
+    not(any(target_os = "linux", target_os = "android")),
+    allow(unused_variables)
+)]
 fn create_player_backend(
     app_handle: tauri::AppHandle,
     playback_reporter: Arc<tokio::sync::Mutex<Option<playback_reporting::PlaybackReporter>>>,
@@ -355,9 +543,16 @@ fn create_player_backend(
             Ok(java_vm) => {
                 match java_vm.attach_current_thread() {
                     Ok(mut env) => {
-                        let context_obj = unsafe { jni::objects::JObject::from_raw(ctx.context().cast()) };
+                        let context_obj =
+                            unsafe { jni::objects::JObject::from_raw(ctx.context().cast()) };
 
-                        match ExoPlayerBackend::new(&mut env, &context_obj, _event_emitter.clone(), playback_reporter.clone(), position_throttler.clone()) {
+                        match ExoPlayerBackend::new(
+                            &mut env,
+                            &context_obj,
+                            _event_emitter.clone(),
+                            playback_reporter.clone(),
+                            position_throttler.clone(),
+                        ) {
                             Ok(backend) => {
                                 info!("Successfully initialized ExoPlayer backend for Android");
                                 return Box::new(backend);
@@ -370,13 +565,21 @@ fn create_player_backend(
                         }
                     }
                     Err(e) => {
-                        emit_backend_init_failed(&app_handle, "exoplayer", format!("attach JNI thread failed: {}", e));
+                        emit_backend_init_failed(
+                            &app_handle,
+                            "exoplayer",
+                            format!("attach JNI thread failed: {}", e),
+                        );
                         return Box::new(NullBackend::new());
                     }
                 }
             }
             Err(e) => {
-                emit_backend_init_failed(&app_handle, "exoplayer", format!("create JavaVM failed: {}", e));
+                emit_backend_init_failed(
+                    &app_handle,
+                    "exoplayer",
+                    format!("create JavaVM failed: {}", e),
+                );
                 return Box::new(NullBackend::new());
             }
         }
@@ -419,11 +622,19 @@ fn create_player_backend(
         }
     }
 
-    // Fallback for other platforms
+    // Platforms with no native audio backend (e.g. Windows): render audio-only
+    // playback through a webview <audio> element (all video already renders in
+    // the webview). Falls back to NullBackend only if the backend can't init.
     #[cfg(not(any(target_os = "linux", target_os = "android")))]
     {
-        warn!("WARNING: No audio backend available for this platform");
-        Box::new(NullBackend::new())
+        info!("No native audio backend for this platform - using webview <audio> backend");
+        match player::WebviewAudioBackend::new(_event_emitter) {
+            Ok(backend) => Box::new(backend),
+            Err(e) => {
+                emit_backend_init_failed(&app_handle, "webview-audio", e.to_string());
+                Box::new(NullBackend::new())
+            }
+        }
     }
 }
 
@@ -440,6 +651,8 @@ fn specta_builder() -> Builder<tauri::Wry> {
         .commands(tauri_specta::collect_commands![
             // Player commands
             player_play_item,
+            player_enter_background_audio,
+            player_exit_background_audio,
             player_play_queue,
             player_play_album_track,
             player_play_tracks,
@@ -468,6 +681,7 @@ fn specta_builder() -> Builder<tauri::Wry> {
             player_skip_to,
             player_set_audio_settings,
             player_get_audio_settings,
+            player_get_eq_presets,
             player_set_video_settings,
             player_get_video_settings,
             // Sleep timer and autoplay commands
@@ -579,6 +793,7 @@ fn specta_builder() -> Builder<tauri::Wry> {
             delete_download,
             delete_all_downloads,
             delete_album_downloads,
+            delete_downloads_under,
             clear_stale_downloads,
             get_download_storage_stats,
             mark_download_completed,
@@ -595,6 +810,9 @@ fn specta_builder() -> Builder<tauri::Wry> {
             get_smart_cache_stats,
             update_smart_cache_config,
             get_smart_cache_config,
+            // WiFi-only download gate (UR-053)
+            set_network_state,
+            get_downloads_allowed,
             get_album_recommendations,
             get_album_affinity_status,
             // Pinning commands
@@ -644,6 +862,9 @@ fn specta_builder() -> Builder<tauri::Wry> {
             repository_get_libraries,
             repository_get_items,
             repository_get_item,
+            repository_get_downloaded_libraries,
+            repository_get_downloaded_items,
+            repository_get_download_disk_usage,
             repository_jray_actors_at,
             repository_get_latest_items,
             repository_get_resume_items,
@@ -656,6 +877,7 @@ fn specta_builder() -> Builder<tauri::Wry> {
             repository_get_playback_info,
             repository_get_video_stream_url,
             repository_get_audio_stream_url,
+            repository_get_audio_only_stream_url_for_video,
             repository_get_live_tv_channels,
             repository_get_channels,
             repository_open_live_stream,
@@ -722,7 +944,12 @@ fn enable_linux_hardware_video_decoding() {
 #[cfg(target_os = "linux")]
 fn log_available_vaapi_decoders() {
     const HW_DECODERS: &[&str] = &[
-        "vah264dec", "vah265dec", "vavp9dec", "vaav1dec", "vampeg2dec", "vavp8dec",
+        "vah264dec",
+        "vah265dec",
+        "vavp9dec",
+        "vaav1dec",
+        "vampeg2dec",
+        "vavp8dec",
     ];
 
     let available: Vec<&str> = HW_DECODERS
@@ -969,6 +1196,9 @@ pub fn run() {
             let video_settings = VideoSettingsWrapper(Mutex::new(VideoSettings::default()));
             app.manage(video_settings);
 
+            // Background-audio handoff base offset (UR-040).
+            app.manage(commands::player::BackgroundAudioOffset::default());
+
             // Initialize thumbnail cache
             info!("[INIT] Initializing thumbnail cache...");
             let app_data_dir = if let Ok(test_data_dir) = std::env::var("JELLYTAU_DATA_DIR") {
@@ -996,6 +1226,13 @@ pub fn run() {
             let download_manager_wrapper = DownloadManagerWrapper(Mutex::new(download_manager));
             app.manage(download_manager_wrapper);
 
+            // Current network transport, for the WiFi-only download gate (UR-053).
+            // Defaults to unmetered ethernet so desktop is never gated; Android
+            // overwrites it via set_network_state as soon as the UI starts.
+            app.manage(commands::download::NetworkStateWrapper(
+                download::network::NetworkStateHandle::new(),
+            ));
+
             // Initialize connectivity monitor
             info!("[INIT] Initializing connectivity monitor...");
             let http_config = HttpConfig::default();
@@ -1055,7 +1292,6 @@ pub fn run() {
         .expect("error while running tauri application");
 }
 
-
 #[cfg(test)]
 mod specta_bindings {
     /// Generates `src/lib/api/bindings.ts`. Run with `cargo test export_typescript_bindings`.
@@ -1063,9 +1299,10 @@ mod specta_bindings {
     fn export_typescript_bindings() {
         super::specta_builder()
             .export(
-                specta_typescript::Typescript::default().bigint(specta_typescript::BigIntExportBehavior::Number),
+                specta_typescript::Typescript::default()
+                    .bigint(specta_typescript::BigIntExportBehavior::Number),
                 "../src/lib/api/bindings.ts",
             )
             .expect("failed to export typescript bindings");
     }
-}
+}

src-tauri/src/playback_mode/mod.rs

@@ -127,7 +127,10 @@ impl PlaybackModeManager {
         #[cfg(target_os = "android")]
         {
             if let Err(e) = crate::player::enable_remote_volume(50) {
-                log::warn!("[PlaybackMode] Failed to enable remote volume/service: {}", e);
+                log::warn!(
+                    "[PlaybackMode] Failed to enable remote volume/service: {}",
+                    e
+                );
                 // Non-fatal - continue; the next poll tick will retry metadata.
             }
         }
@@ -154,8 +157,16 @@ impl PlaybackModeManager {
     /// Send volume command to remote session
     /// Commands: "SetVolume", "VolumeUp", "VolumeDown"
     #[allow(dead_code)] // Called from Android JNI callback
-    pub async fn send_remote_volume_command(&self, command: &str, volume: i32) -> Result<(), String> {
-        log::info!("[PlaybackMode] send_remote_volume_command ENTERED: command={}, volume={}", command, volume);
+    pub async fn send_remote_volume_command(
+        &self,
+        command: &str,
+        volume: i32,
+    ) -> Result<(), String> {
+        log::info!(
+            "[PlaybackMode] send_remote_volume_command ENTERED: command={}, volume={}",
+            command,
+            volume
+        );
 
         // Get the current session ID
         let session_id = match self.get_mode() {
@@ -166,18 +177,18 @@ impl PlaybackModeManager {
             }
         };
 
-        log::info!("[PlaybackMode] Current mode is Remote, session_id={}", session_id);
+        log::info!(
+            "[PlaybackMode] Current mode is Remote, session_id={}",
+            session_id
+        );
 
         // Get Jellyfin client
         let client = {
             log::info!("[PlaybackMode] Attempting to lock Jellyfin client...");
-            let client_opt = self
-                .jellyfin_client
-                .lock()
-                .map_err(|e| {
-                    log::error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
-                    format!("Failed to lock Jellyfin client: {}", e)
-                })?;
+            let client_opt = self.jellyfin_client.lock().map_err(|e| {
+                log::error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
+                format!("Failed to lock Jellyfin client: {}", e)
+            })?;
 
             log::info!("[PlaybackMode] Jellyfin client lock acquired");
 
@@ -196,7 +207,12 @@ impl PlaybackModeManager {
         log::info!("[PlaybackMode] About to call client.session_set_volume...");
 
         // Send the volume command
-        log::info!("[PlaybackMode] Sending {} command to session {} (volume: {})", command, session_id, volume);
+        log::info!(
+            "[PlaybackMode] Sending {} command to session {} (volume: {})",
+            command,
+            session_id,
+            volume
+        );
         let result = client.session_set_volume(session_id, volume).await;
 
         match &result {
@@ -209,8 +225,11 @@ impl PlaybackModeManager {
 
     /// Extract Jellyfin item IDs from queue items
     /// Returns (item_ids, adjusted_current_index)
-    fn extract_jellyfin_ids(&self, items: &[crate::player::MediaItem], original_index: usize) -> Result<(Vec<String>, usize), String> {
-
+    fn extract_jellyfin_ids(
+        &self,
+        items: &[crate::player::MediaItem],
+        original_index: usize,
+    ) -> Result<(Vec<String>, usize), String> {
         let mut jellyfin_ids: Vec<String> = Vec::new();
         let mut adjusted_index: Option<usize> = None;
         let mut jellyfin_item_count = 0;
@@ -236,7 +255,9 @@ impl PlaybackModeManager {
                     "[PlaybackMode] Currently playing item (index {}) does not have a Jellyfin ID",
                     original_index
                 );
-                return Err("Cannot transfer: currently playing item is not from Jellyfin".to_string());
+                return Err(
+                    "Cannot transfer: currently playing item is not from Jellyfin".to_string(),
+                );
             }
         };
 
@@ -269,7 +290,9 @@ impl PlaybackModeManager {
         debug!("[PlaybackMode] Flag set, calling transfer_to_remote_inner");
 
         // Perform the transfer
-        let result = self.transfer_to_remote_inner(&session_id, position_override).await;
+        let result = self
+            .transfer_to_remote_inner(&session_id, position_override)
+            .await;
 
         // Clear transferring flag
         self.is_transferring.store(false, Ordering::Relaxed);
@@ -283,7 +306,10 @@ impl PlaybackModeManager {
         position_override: Option<f64>,
     ) -> Result<(), String> {
         log::info!("[PlaybackMode] transfer_to_remote_inner ENTERED");
-        debug!("[PlaybackMode] transfer_to_remote_inner: session_id={}", session_id);
+        debug!(
+            "[PlaybackMode] transfer_to_remote_inner: session_id={}",
+            session_id
+        );
 
         // If we're already controlling a remote session, that *old* session — not
         // the idle local player — is the source of truth for the current track and
@@ -307,13 +333,26 @@ impl PlaybackModeManager {
             let original_index = queue.current_index().unwrap_or(0);
             let items = queue.items();
 
-            log::info!("[PlaybackMode] Queue has {} items, original_index={}", items.len(), original_index);
-            debug!("[PlaybackMode] Queue has {} items, original_index={}", items.len(), original_index);
+            log::info!(
+                "[PlaybackMode] Queue has {} items, original_index={}",
+                items.len(),
+                original_index
+            );
+            debug!(
+                "[PlaybackMode] Queue has {} items, original_index={}",
+                items.len(),
+                original_index
+            );
 
             // Log each item's jellyfin_id for debugging
             for (i, item) in items.iter().enumerate() {
                 let jf_id = item.jellyfin_id().unwrap_or("NONE");
-                log::debug!("[PlaybackMode] Item {}: id={}, jellyfin_id={}", i, item.id, jf_id);
+                log::debug!(
+                    "[PlaybackMode] Item {}: id={}, jellyfin_id={}",
+                    i,
+                    item.id,
+                    jf_id
+                );
             }
 
             let (ids, adjusted_index) = self.extract_jellyfin_ids(items, original_index)?;
@@ -372,14 +411,11 @@ impl PlaybackModeManager {
         log::info!("[PlaybackMode] Getting Jellyfin client for transfer...");
         debug!("[PlaybackMode] Getting Jellyfin client for transfer...");
         let client = {
-            let client_opt = self
-                .jellyfin_client
-                .lock()
-                .map_err(|e| {
-                    log::error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
-                    error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
-                    format!("Failed to lock Jellyfin client: {}", e)
-                })?;
+            let client_opt = self.jellyfin_client.lock().map_err(|e| {
+                log::error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
+                error!("[PlaybackMode] Failed to lock Jellyfin client: {}", e);
+                format!("Failed to lock Jellyfin client: {}", e)
+            })?;
 
             match client_opt.as_ref() {
                 Some(c) => {
@@ -405,7 +441,9 @@ impl PlaybackModeManager {
             match client.get_session(prev_session_id).await {
                 Ok(Some(session)) => {
                     // Resume at the previous session's position.
-                    if let Some(ticks) = session.play_state.as_ref().and_then(|ps| ps.position_ticks) {
+                    if let Some(ticks) =
+                        session.play_state.as_ref().and_then(|ps| ps.position_ticks)
+                    {
                         position_seconds = ticks as f64 / TICKS_PER_SECOND;
                         log::info!(
                             "[PlaybackMode] Using previous remote position: {:.2}s",
@@ -413,7 +451,11 @@ impl PlaybackModeManager {
                         );
                     }
                     // Resume on whichever track the previous session reached.
-                    if let Some(now_id) = session.now_playing_item.as_ref().and_then(|i| i.id.as_deref()) {
+                    if let Some(now_id) = session
+                        .now_playing_item
+                        .as_ref()
+                        .and_then(|i| i.id.as_deref())
+                    {
                         if let Some(idx) = queue_ids.iter().position(|id| id == now_id) {
                             log::info!(
                                 "[PlaybackMode] Previous session is on track {} (queue index {})",
@@ -430,8 +472,13 @@ impl PlaybackModeManager {
                         }
                     }
                 }
-                Ok(None) => log::warn!("[PlaybackMode] Previous remote session not found while reading state"),
-                Err(e) => log::warn!("[PlaybackMode] Failed to read previous remote session: {}", e),
+                Ok(None) => log::warn!(
+                    "[PlaybackMode] Previous remote session not found while reading state"
+                ),
+                Err(e) => log::warn!(
+                    "[PlaybackMode] Failed to read previous remote session: {}",
+                    e
+                ),
             }
         }
 
@@ -440,7 +487,10 @@ impl PlaybackModeManager {
 
         // Log queue context for debugging (context is tracked but we always send track IDs)
         match &queue_context {
-            QueueContext::Album { album_id, album_name } => {
+            QueueContext::Album {
+                album_id,
+                album_name,
+            } => {
                 log::info!(
                     "[PlaybackMode] Transferring album '{}' (ID: {}) with {} tracks to remote",
                     album_name,
@@ -448,7 +498,10 @@ impl PlaybackModeManager {
                     queue_ids.len()
                 );
             }
-            QueueContext::Playlist { playlist_id, playlist_name } => {
+            QueueContext::Playlist {
+                playlist_id,
+                playlist_name,
+            } => {
                 log::info!(
                     "[PlaybackMode] Transferring playlist '{}' (ID: {}) with {} tracks to remote",
                     playlist_name,
@@ -540,7 +593,11 @@ impl PlaybackModeManager {
                     return Err("Remote session not found".to_string());
                 }
                 Err(e) => {
-                    log::warn!("[PlaybackMode] Error polling session (attempt {}): {}", attempts, e);
+                    log::warn!(
+                        "[PlaybackMode] Error polling session (attempt {}): {}",
+                        attempts,
+                        e
+                    );
                     // Continue polling - transient errors are OK
                 }
             }
@@ -572,9 +629,15 @@ impl PlaybackModeManager {
         // up with two devices playing at once. Do this only after the new session
         // is confirmed playing, so a failure here doesn't leave us with silence.
         if let Some(prev_session_id) = previous_remote_session {
-            log::info!("[PlaybackMode] Stopping previous remote session {}", prev_session_id);
+            log::info!(
+                "[PlaybackMode] Stopping previous remote session {}",
+                prev_session_id
+            );
             if let Err(e) = client.send_session_command(prev_session_id, "Stop").await {
-                log::warn!("[PlaybackMode] Failed to stop previous remote session: {}", e);
+                log::warn!(
+                    "[PlaybackMode] Failed to stop previous remote session: {}",
+                    e
+                );
             }
         }
 
@@ -594,7 +657,9 @@ impl PlaybackModeManager {
                 );
             }
 
-            player.stop().map_err(|e| format!("Failed to stop playback: {}", e))?;
+            player
+                .stop()
+                .map_err(|e| format!("Failed to stop playback: {}", e))?;
 
             // Log queue state AFTER stop (should be unchanged)
             {
@@ -677,11 +742,20 @@ impl PlaybackModeManager {
         };
 
         // Stop remote playback
-        log::info!("[PlaybackMode] Stopping remote playback on session: {}", session_id);
-        match client.send_session_command(session_id.clone(), "Stop").await {
+        log::info!(
+            "[PlaybackMode] Stopping remote playback on session: {}",
+            session_id
+        );
+        match client
+            .send_session_command(session_id.clone(), "Stop")
+            .await
+        {
             Ok(_) => log::info!("[PlaybackMode] Stop command sent successfully"),
             Err(e) => {
-                log::warn!("[PlaybackMode] Failed to stop remote session (non-fatal): {}", e);
+                log::warn!(
+                    "[PlaybackMode] Failed to stop remote session (non-fatal): {}",
+                    e
+                );
                 // Don't fail the transfer if we can't stop the remote session
                 // The user is already playing locally, so this is not critical
             }
@@ -843,7 +917,10 @@ mod tests {
     fn test_start_position_ticks_from_seconds() {
         // Mid-track positions convert to ticks (10M ticks per second).
         assert_eq!(start_position_ticks_from_seconds(5.0), Some(50_000_000));
-        assert_eq!(start_position_ticks_from_seconds(123.45), Some(1_234_500_000));
+        assert_eq!(
+            start_position_ticks_from_seconds(123.45),
+            Some(1_234_500_000)
+        );
 
         // At/near the start, send no resume position so the track casts from 0.
         assert_eq!(start_position_ticks_from_seconds(0.0), None);
@@ -871,6 +948,7 @@ mod tests {
                 artist_items: None,
                 artists: Some(vec!["Test Artist".to_string()]),
                 primary_image_tag: None,
+                image_id: None,
                 item_type: Some("Audio".to_string()),
                 playlist_id: None,
                 duration: Some(180.0),
@@ -902,6 +980,7 @@ mod tests {
                 artist_items: None,
                 artists: Some(vec!["Test Artist".to_string()]),
                 primary_image_tag: None,
+                image_id: None,
                 item_type: Some("Audio".to_string()),
                 playlist_id: None,
                 duration: Some(180.0),
@@ -931,7 +1010,12 @@ mod tests {
         fn test_extract_all_jellyfin_ids_from_album() {
             // Simulate an album with 5 tracks - all should be extracted
             let items: Vec<MediaItem> = (1..=5)
-                .map(|i| create_test_item_with_jellyfin_id(&format!("track_{}", i), &format!("jf_track_{}", i)))
+                .map(|i| {
+                    create_test_item_with_jellyfin_id(
+                        &format!("track_{}", i),
+                        &format!("jf_track_{}", i),
+                    )
+                })
                 .collect();
 
             let manager = super::PlaybackModeManager::new(
@@ -965,7 +1049,7 @@ mod tests {
             // Mix of Jellyfin and local items - only Jellyfin items should be extracted
             let items = vec![
                 create_test_item_with_jellyfin_id("1", "jf_1"),
-                create_test_item_local("2"),  // Local, no Jellyfin ID
+                create_test_item_local("2"), // Local, no Jellyfin ID
                 create_test_item_with_jellyfin_id("3", "jf_3"),
                 create_test_item_with_jellyfin_id("4", "jf_4"),
             ];
@@ -1000,7 +1084,7 @@ mod tests {
             // Current item has no Jellyfin ID - should fail
             let items = vec![
                 create_test_item_with_jellyfin_id("1", "jf_1"),
-                create_test_item_local("2"),  // Local, no Jellyfin ID
+                create_test_item_local("2"), // Local, no Jellyfin ID
                 create_test_item_with_jellyfin_id("3", "jf_3"),
             ];
 

src-tauri/src/playback_reporting/mod.rs

@@ -1,9 +1,9 @@
 pub mod reporter;
-pub mod throttle;
 pub mod sync_processor;
+pub mod throttle;
 
-pub use reporter::{PlaybackReporter, PlaybackOperation, PlaybackContext};
-#[allow(unused_imports)]  // Will be used when position updates are hooked
-pub use throttle::EventThrottler;
-#[allow(unused_imports)]  // Will be used when sync processor is integrated
+pub use reporter::{PlaybackContext, PlaybackOperation, PlaybackReporter};
+#[allow(unused_imports)] // Will be used when sync processor is integrated
 pub use sync_processor::SyncProcessor;
+#[allow(unused_imports)] // Will be used when position updates are hooked
+pub use throttle::EventThrottler;

src-tauri/src/playback_reporting/reporter.rs

@@ -14,7 +14,7 @@ use crate::storage::db_service::{DatabaseService, Query, QueryParam, RusqliteSer
 /// Playback context information
 #[derive(Debug, Clone)]
 pub struct PlaybackContext {
-    pub context_type: String,  // "container" or "single"
+    pub context_type: String, // "container" or "single"
     pub context_id: Option<String>,
 }
 
@@ -65,7 +65,11 @@ impl PlaybackReporter {
     ///
     /// Always updates local DB first, then attempts server sync if online.
     /// If server sync fails, operation is queued for retry.
-    pub async fn report(&self, operation: PlaybackOperation, is_online: bool) -> Result<(), String> {
+    pub async fn report(
+        &self,
+        operation: PlaybackOperation,
+        is_online: bool,
+    ) -> Result<(), String> {
         log::info!("[PlaybackReporter] Reporting operation: {:?}", operation);
 
         // Always update local DB first (works offline)
@@ -93,7 +97,11 @@ impl PlaybackReporter {
     /// Updates local database with playback info
     async fn update_local_db(&self, operation: &PlaybackOperation) -> Result<(), String> {
         match operation {
-            PlaybackOperation::Start { item_id, position_ticks, context } => {
+            PlaybackOperation::Start {
+                item_id,
+                position_ticks,
+                context,
+            } => {
                 let query = Query::with_params(
                     "INSERT INTO user_data (user_id, item_id, playback_position_ticks, last_played_at,
                                             playback_context_type, playback_context_id, pending_sync)
@@ -113,12 +121,22 @@ impl PlaybackReporter {
                     ],
                 );
 
-                self.db_service.execute(query).await.map_err(|e| e.to_string())?;
+                self.db_service
+                    .execute(query)
+                    .await
+                    .map_err(|e| e.to_string())?;
                 log::debug!("[PlaybackReporter] Updated local DB for start: {}", item_id);
             }
 
-            PlaybackOperation::Progress { item_id, position_ticks, is_paused: _ } |
-            PlaybackOperation::Stopped { item_id, position_ticks } => {
+            PlaybackOperation::Progress {
+                item_id,
+                position_ticks,
+                is_paused: _,
+            }
+            | PlaybackOperation::Stopped {
+                item_id,
+                position_ticks,
+            } => {
                 let query = Query::with_params(
                     "INSERT INTO user_data (user_id, item_id, playback_position_ticks, last_played_at, pending_sync)
                      VALUES (?, ?, ?, CURRENT_TIMESTAMP, 1)
@@ -133,8 +151,14 @@ impl PlaybackReporter {
                     ],
                 );
 
-                self.db_service.execute(query).await.map_err(|e| e.to_string())?;
-                log::debug!("[PlaybackReporter] Updated local DB for progress/stop: {}", item_id);
+                self.db_service
+                    .execute(query)
+                    .await
+                    .map_err(|e| e.to_string())?;
+                log::debug!(
+                    "[PlaybackReporter] Updated local DB for progress/stop: {}",
+                    item_id
+                );
             }
 
             PlaybackOperation::MarkPlayed { item_id } => {
@@ -152,8 +176,14 @@ impl PlaybackReporter {
                     ],
                 );
 
-                self.db_service.execute(query).await.map_err(|e| e.to_string())?;
-                log::debug!("[PlaybackReporter] Updated local DB for mark played: {}", item_id);
+                self.db_service
+                    .execute(query)
+                    .await
+                    .map_err(|e| e.to_string())?;
+                log::debug!(
+                    "[PlaybackReporter] Updated local DB for mark played: {}",
+                    item_id
+                );
             }
         }
 
@@ -163,34 +193,57 @@ impl PlaybackReporter {
     /// Syncs to Jellyfin server
     async fn sync_to_server(&self, operation: &PlaybackOperation) -> Result<(), String> {
         let client_guard = self.jellyfin_client.lock().await;
-        let client = client_guard.as_ref().ok_or("JellyfinClient not initialized")?;
+        let client = client_guard
+            .as_ref()
+            .ok_or("JellyfinClient not initialized")?;
 
         match operation {
-            PlaybackOperation::Start { item_id, position_ticks, .. } => {
-                client.report_playback_start(
-                    item_id.clone(),
-                    *position_ticks,
-                    None,  // play_session_id
-                ).await?;
+            PlaybackOperation::Start {
+                item_id,
+                position_ticks,
+                ..
+            } => {
+                client
+                    .report_playback_start(
+                        item_id.clone(),
+                        *position_ticks,
+                        None, // play_session_id
+                    )
+                    .await?;
                 log::info!("[PlaybackReporter] Reported start to server: {}", item_id);
             }
 
-            PlaybackOperation::Progress { item_id, position_ticks, is_paused } => {
-                client.report_playback_progress(
-                    item_id.clone(),
-                    *position_ticks,
-                    *is_paused,
-                    None,  // play_session_id
-                ).await?;
-                log::debug!("[PlaybackReporter] Reported progress to server: {} (paused: {})", item_id, is_paused);
+            PlaybackOperation::Progress {
+                item_id,
+                position_ticks,
+                is_paused,
+            } => {
+                client
+                    .report_playback_progress(
+                        item_id.clone(),
+                        *position_ticks,
+                        *is_paused,
+                        None, // play_session_id
+                    )
+                    .await?;
+                log::debug!(
+                    "[PlaybackReporter] Reported progress to server: {} (paused: {})",
+                    item_id,
+                    is_paused
+                );
             }
 
-            PlaybackOperation::Stopped { item_id, position_ticks } => {
-                client.report_playback_stopped(
-                    item_id.clone(),
-                    *position_ticks,
-                    None,  // play_session_id
-                ).await?;
+            PlaybackOperation::Stopped {
+                item_id,
+                position_ticks,
+            } => {
+                client
+                    .report_playback_stopped(
+                        item_id.clone(),
+                        *position_ticks,
+                        None, // play_session_id
+                    )
+                    .await?;
                 log::info!("[PlaybackReporter] Reported stop to server: {}", item_id);
             }
 
@@ -199,12 +252,13 @@ impl PlaybackReporter {
                 // For now, report as stopped at max position
                 // TODO: Fetch item runtime from DB or assume 100% completion
                 let max_ticks = i64::MAX; // Temporary - should be actual runtime
-                client.report_playback_stopped(
-                    item_id.clone(),
-                    max_ticks,
-                    None,
-                ).await?;
-                log::info!("[PlaybackReporter] Reported mark played to server: {}", item_id);
+                client
+                    .report_playback_stopped(item_id.clone(), max_ticks, None)
+                    .await?;
+                log::info!(
+                    "[PlaybackReporter] Reported mark played to server: {}",
+                    item_id
+                );
             }
         }
 
@@ -214,13 +268,21 @@ impl PlaybackReporter {
     /// Queues operation for later sync
     async fn queue_for_sync(&self, operation: &PlaybackOperation) -> Result<(), String> {
         let (op_name, item_id, payload) = match operation {
-            PlaybackOperation::Start { item_id, position_ticks, context } => {
+            PlaybackOperation::Start {
+                item_id,
+                position_ticks,
+                context,
+            } => {
                 let payload_data = serde_json::json!({
                     "position_ticks": position_ticks,
                     "context_type": context.as_ref().map(|c| &c.context_type),
                     "context_id": context.as_ref().and_then(|c| c.context_id.as_ref()),
                 });
-                ("report_playback_start", Some(item_id.clone()), Some(payload_data.to_string()))
+                (
+                    "report_playback_start",
+                    Some(item_id.clone()),
+                    Some(payload_data.to_string()),
+                )
             }
 
             PlaybackOperation::Progress { .. } => {
@@ -230,11 +292,18 @@ impl PlaybackReporter {
                 return Ok(());
             }
 
-            PlaybackOperation::Stopped { item_id, position_ticks } => {
+            PlaybackOperation::Stopped {
+                item_id,
+                position_ticks,
+            } => {
                 let payload_data = serde_json::json!({
                     "position_ticks": position_ticks,
                 });
-                ("report_playback_stopped", Some(item_id.clone()), Some(payload_data.to_string()))
+                (
+                    "report_playback_stopped",
+                    Some(item_id.clone()),
+                    Some(payload_data.to_string()),
+                )
             }
 
             PlaybackOperation::MarkPlayed { item_id } => {
@@ -253,7 +322,10 @@ impl PlaybackReporter {
             ],
         );
 
-        self.db_service.execute(query).await.map_err(|e| e.to_string())?;
+        self.db_service
+            .execute(query)
+            .await
+            .map_err(|e| e.to_string())?;
         log::info!("[PlaybackReporter] Queued operation: {}", op_name);
 
         Ok(())
@@ -269,7 +341,10 @@ impl PlaybackReporter {
             ],
         );
 
-        self.db_service.execute(query).await.map_err(|e| e.to_string())?;
+        self.db_service
+            .execute(query)
+            .await
+            .map_err(|e| e.to_string())?;
         log::debug!("[PlaybackReporter] Marked as synced: {}", item_id);
 
         Ok(())
@@ -278,10 +353,10 @@ impl PlaybackReporter {
     /// Extracts item_id from operation
     fn get_item_id(&self, operation: &PlaybackOperation) -> Option<String> {
         match operation {
-            PlaybackOperation::Start { item_id, .. } |
-            PlaybackOperation::Progress { item_id, .. } |
-            PlaybackOperation::Stopped { item_id, .. } |
-            PlaybackOperation::MarkPlayed { item_id } => Some(item_id.clone()),
+            PlaybackOperation::Start { item_id, .. }
+            | PlaybackOperation::Progress { item_id, .. }
+            | PlaybackOperation::Stopped { item_id, .. }
+            | PlaybackOperation::MarkPlayed { item_id } => Some(item_id.clone()),
         }
     }
 }

src-tauri/src/playback_reporting/sync_processor.rs

@@ -6,8 +6,8 @@
 #![allow(dead_code)]
 #![allow(unused_imports)]
 
-use std::sync::Arc;
 use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
 use std::time::Duration;
 use tokio::sync::Mutex as TokioMutex;
 
@@ -17,9 +17,9 @@ use crate::storage::db_service::RusqliteService;
 
 /// Configuration for sync processor
 pub struct SyncConfig {
-    pub max_retries: u32,          // 5
-    pub base_retry_delay_ms: u64,  // 1000ms
-    pub batch_size: usize,         // 10 items
+    pub max_retries: u32,         // 5
+    pub base_retry_delay_ms: u64, // 1000ms
+    pub batch_size: usize,        // 10 items
 }
 
 impl Default for SyncConfig {

src-tauri/src/player/android/mod.rs

@@ -4,9 +4,9 @@
 //! through JNI calls to Kotlin code.
 
 use crate::utils::lock::MutexSafe;
+use log::debug;
 use std::sync::{Arc, Mutex, OnceLock};
 use tokio::sync::Mutex as TokioMutex;
-use log::debug;
 
 use jni::objects::{GlobalRef, JClass, JObject, JString, JValue};
 use jni::sys::{jboolean, jdouble, jfloat, jint};
@@ -17,7 +17,7 @@ use super::backend::{PlayerBackend, PlayerError};
 use super::events::{PlayerStatusEvent, SharedEventEmitter};
 use super::media::{MediaItem, MediaType};
 use super::state::PlayerState;
-use crate::playback_reporting::{PlaybackReporter, EventThrottler, PlaybackOperation};
+use crate::playback_reporting::{EventThrottler, PlaybackOperation, PlaybackReporter};
 use crate::utils::conversions::seconds_to_ticks;
 
 /// Global reference to the JavaVM for JNI callbacks
@@ -33,10 +33,12 @@ static EVENT_EMITTER: OnceLock<SharedEventEmitter> = OnceLock::new();
 static SHARED_STATE: OnceLock<Arc<Mutex<ExoPlayerState>>> = OnceLock::new();
 
 /// Global handler for media session commands from Android lockscreen/notification
-static MEDIA_COMMAND_HANDLER: OnceLock<Arc<dyn MediaCommandHandler + Send + Sync>> = OnceLock::new();
+static MEDIA_COMMAND_HANDLER: OnceLock<Arc<dyn MediaCommandHandler + Send + Sync>> =
+    OnceLock::new();
 
 /// Global handler for remote volume changes from Android volume buttons
-static REMOTE_VOLUME_HANDLER: OnceLock<Arc<dyn RemoteVolumeHandler + Send + Sync>> = OnceLock::new();
+static REMOTE_VOLUME_HANDLER: OnceLock<Arc<dyn RemoteVolumeHandler + Send + Sync>> =
+    OnceLock::new();
 
 /// Global player controller for autoplay decisions
 static PLAYER_CONTROLLER: OnceLock<Arc<TokioMutex<super::PlayerController>>> = OnceLock::new();
@@ -87,9 +89,9 @@ impl DetectedCodecs {
 
 /// Public function to get detected codecs (for use in repository layer)
 pub fn get_detected_codecs() -> Option<(String, String)> {
-    DETECTED_CODECS.get().map(|codecs| {
-        (codecs.video_codecs_string(), codecs.audio_codecs_string())
-    })
+    DETECTED_CODECS
+        .get()
+        .map(|codecs| (codecs.video_codecs_string(), codecs.audio_codecs_string()))
 }
 
 /// Trait for handling media commands from Android MediaSession.
@@ -194,9 +196,9 @@ impl ExoPlayerBackend {
         let _ = JAVA_VM.set(vm);
 
         // Store the Context as a global reference for later use
-        let context_global = env
-            .new_global_ref(context)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create global context ref: {}", e)))?;
+        let context_global = env.new_global_ref(context).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create global context ref: {}", e))
+        })?;
         let _ = APP_CONTEXT.set(context_global);
 
         // Store the event emitter
@@ -217,11 +219,16 @@ impl ExoPlayerBackend {
             .call_method(context, "getClassLoader", "()Ljava/lang/ClassLoader;", &[])
             .map_err(|e| PlayerError::playback_failed(format!("Failed to get ClassLoader: {}", e)))?
             .l()
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to convert ClassLoader: {}", e)))?;
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to convert ClassLoader: {}", e))
+            })?;
 
         // Load the JellyTauPlayer class using the app's class loader
-        let player_class_name = env.new_string("com.dtourolle.jellytau.player.JellyTauPlayer")
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create class name string: {}", e)))?;
+        let player_class_name = env
+            .new_string("com.dtourolle.jellytau.player.JellyTauPlayer")
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to create class name string: {}", e))
+            })?;
 
         let player_class_obj = env
             .call_method(
@@ -230,9 +237,13 @@ impl ExoPlayerBackend {
                 "(Ljava/lang/String;)Ljava/lang/Class;",
                 &[JValue::Object(&player_class_name.into())],
             )
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to load JellyTauPlayer class: {}", e)))?
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to load JellyTauPlayer class: {}", e))
+            })?
             .l()
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to convert to Class: {}", e)))?;
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to convert to Class: {}", e))
+            })?;
 
         // Cast to JClass for static method calls
         let player_class = JClass::from(player_class_obj);
@@ -244,7 +255,9 @@ impl ExoPlayerBackend {
             "(Landroid/content/Context;)V",
             &[JValue::Object(context)],
         )
-        .map_err(|e| PlayerError::playback_failed(format!("Failed to initialize JellyTauPlayer: {}", e)))?;
+        .map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to initialize JellyTauPlayer: {}", e))
+        })?;
 
         // Get the singleton instance
         let player_obj = env
@@ -254,14 +267,21 @@ impl ExoPlayerBackend {
                 "()Lcom/dtourolle/jellytau/player/JellyTauPlayer;",
                 &[],
             )
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to get JellyTauPlayer instance: {}", e)))?
+            .map_err(|e| {
+                PlayerError::playback_failed(format!(
+                    "Failed to get JellyTauPlayer instance: {}",
+                    e
+                ))
+            })?
             .l()
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to convert to object: {}", e)))?;
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to convert to object: {}", e))
+            })?;
 
         // Create a global reference to keep the player alive
-        let player_ref = env
-            .new_global_ref(player_obj)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create global ref: {}", e)))?;
+        let player_ref = env.new_global_ref(player_obj).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create global ref: {}", e))
+        })?;
 
         Ok(Self {
             player_ref,
@@ -271,16 +291,18 @@ impl ExoPlayerBackend {
 
     /// Call a void method on the player with no arguments
     fn call_player_method(&self, method: &str) -> Result<(), PlayerError> {
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
             .map_err(|e| PlayerError::playback_failed(format!("Failed to attach thread: {}", e)))?;
 
         env.call_method(&self.player_ref, method, "()V", &[])
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to call {}: {}", method, e)))?;
+            .map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to call {}: {}", method, e))
+            })?;
 
         Ok(())
     }
@@ -314,43 +336,46 @@ impl PlayerBackend for ExoPlayerBackend {
             state.is_loaded = false;
         }
 
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
             .map_err(|e| PlayerError::playback_failed(format!("Failed to attach thread: {}", e)))?;
 
         // Create JNI strings for required parameters
-        let url_jstring = env
-            .new_string(&url)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create URL string: {}", e)))?;
+        let url_jstring = env.new_string(&url).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create URL string: {}", e))
+        })?;
 
-        let media_id_jstring = env
-            .new_string(&media_id)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create media ID string: {}", e)))?;
+        let media_id_jstring = env.new_string(&media_id).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create media ID string: {}", e))
+        })?;
 
-        let title_jstring = env
-            .new_string(&title)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create title string: {}", e)))?;
+        let title_jstring = env.new_string(&title).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create title string: {}", e))
+        })?;
 
         // Create JNI strings for optional parameters (null if None)
         let artist_jstring = match &artist {
-            Some(a) => Some(env.new_string(a)
-                .map_err(|e| PlayerError::playback_failed(format!("Failed to create artist string: {}", e)))?),
+            Some(a) => Some(env.new_string(a).map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to create artist string: {}", e))
+            })?),
             None => None,
         };
 
         let album_jstring = match &album {
-            Some(a) => Some(env.new_string(a)
-                .map_err(|e| PlayerError::playback_failed(format!("Failed to create album string: {}", e)))?),
+            Some(a) => Some(env.new_string(a).map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to create album string: {}", e))
+            })?),
             None => None,
         };
 
         let artwork_jstring = match &artwork_url {
-            Some(a) => Some(env.new_string(a)
-                .map_err(|e| PlayerError::playback_failed(format!("Failed to create artwork string: {}", e)))?),
+            Some(a) => Some(env.new_string(a).map_err(|e| {
+                PlayerError::playback_failed(format!("Failed to create artwork string: {}", e))
+            })?),
             None => None,
         };
 
@@ -376,16 +401,16 @@ impl PlayerBackend for ExoPlayerBackend {
             MediaType::Video => "video",
             MediaType::Audio => "audio",
         };
-        let media_type_jstring = env
-            .new_string(media_type_str)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create media type string: {}", e)))?;
+        let media_type_jstring = env.new_string(media_type_str).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create media type string: {}", e))
+        })?;
 
         // Serialize subtitles to JSON for passing to Kotlin
-        let subtitles_json = serde_json::to_string(&media.subtitles)
-            .unwrap_or_else(|_| "[]".to_string());
-        let subtitles_jstring = env
-            .new_string(&subtitles_json)
-            .map_err(|e| PlayerError::playback_failed(format!("Failed to create subtitles JSON string: {}", e)))?;
+        let subtitles_json =
+            serde_json::to_string(&media.subtitles).unwrap_or_else(|_| "[]".to_string());
+        let subtitles_jstring = env.new_string(&subtitles_json).map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to create subtitles JSON string: {}", e))
+        })?;
 
         // Call loadWithMetadata for MediaSession support (lockscreen controls)
         debug!("[Android] Loading media: url={}, id={}, title={}, artist={:?}, album={:?}, duration_ms={}, type={}, subtitles={}",
@@ -414,7 +439,10 @@ impl PlayerBackend for ExoPlayerBackend {
                 env.exception_describe().ok();
                 env.exception_clear().ok();
             }
-            return Err(PlayerError::playback_failed(format!("Failed to call loadWithMetadata: {}", e)));
+            return Err(PlayerError::playback_failed(format!(
+                "Failed to call loadWithMetadata: {}",
+                e
+            )));
         }
 
         debug!("[Android] Successfully called loadWithMetadata");
@@ -443,9 +471,9 @@ impl PlayerBackend for ExoPlayerBackend {
     }
 
     fn seek(&mut self, position: f64) -> Result<(), PlayerError> {
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
@@ -465,9 +493,9 @@ impl PlayerBackend for ExoPlayerBackend {
     fn set_volume(&mut self, volume: f32) -> Result<(), PlayerError> {
         let clamped = volume.clamp(0.0, 1.0);
 
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
@@ -502,9 +530,9 @@ impl PlayerBackend for ExoPlayerBackend {
     }
 
     fn set_audio_track(&mut self, stream_index: i32) -> Result<(), PlayerError> {
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
@@ -516,15 +544,17 @@ impl PlayerBackend for ExoPlayerBackend {
             "(I)V",
             &[JValue::Int(stream_index)],
         )
-        .map_err(|e| PlayerError::playback_failed(format!("Failed to call setAudioTrack: {}", e)))?;
+        .map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to call setAudioTrack: {}", e))
+        })?;
 
         Ok(())
     }
 
     fn set_subtitle_track(&mut self, stream_index: Option<i32>) -> Result<(), PlayerError> {
-        let vm = JAVA_VM.get().ok_or_else(|| {
-            PlayerError::playback_failed("JavaVM not initialized")
-        })?;
+        let vm = JAVA_VM
+            .get()
+            .ok_or_else(|| PlayerError::playback_failed("JavaVM not initialized"))?;
 
         let mut env = vm
             .attach_current_thread()
@@ -539,7 +569,9 @@ impl PlayerBackend for ExoPlayerBackend {
             "(I)V",
             &[JValue::Int(index)],
         )
-        .map_err(|e| PlayerError::playback_failed(format!("Failed to call setSubtitleTrack: {}", e)))?;
+        .map_err(|e| {
+            PlayerError::playback_failed(format!("Failed to call setSubtitleTrack: {}", e))
+        })?;
 
         Ok(())
     }
@@ -603,7 +635,11 @@ fn report_android_progress(position: f64) {
             if !state.state.is_playing() {
                 return;
             }
-            match state.current_media.as_ref().and_then(|m| m.jellyfin_id().map(|s| s.to_string())) {
+            match state
+                .current_media
+                .as_ref()
+                .and_then(|m| m.jellyfin_id().map(|s| s.to_string()))
+            {
                 Some(id) => id,
                 None => return,
             }
@@ -664,10 +700,7 @@ pub extern "system" fn Java_com_dtourolle_jellytau_player_JellyTauPlayer_nativeO
     state: JString,
     media_id: JString,
 ) {
-    let state_str: String = env
-        .get_string(&state)
-        .map(|s| s.into())
-        .unwrap_or_default();
+    let state_str: String = env.get_string(&state).map(|s| s.into()).unwrap_or_default();
 
     let media_id_opt: Option<String> = if media_id.is_null() {
         None
@@ -769,7 +802,11 @@ pub extern "system" fn Java_com_dtourolle_jellytau_player_JellyTauPlayer_nativeO
                     // Log queue state before advancing
                     let queue_info = {
                         let queue = ctrl.queue.lock_safe();
-                        format!("current_index={:?}, len={}", queue.current_index(), queue.items().len())
+                        format!(
+                            "current_index={:?}, len={}",
+                            queue.current_index(),
+                            queue.items().len()
+                        )
                     };
                     log::debug!("[Autoplay] Queue state before next(): {}", queue_info);
 
@@ -779,7 +816,11 @@ pub extern "system" fn Java_com_dtourolle_jellytau_player_JellyTauPlayer_nativeO
                             // Log queue state after advancing
                             let queue_info = {
                                 let queue = ctrl.queue.lock_safe();
-                                format!("current_index={:?}, len={}", queue.current_index(), queue.items().len())
+                                format!(
+                                    "current_index={:?}, len={}",
+                                    queue.current_index(),
+                                    queue.items().len()
+                                )
                             };
                             log::debug!("[Autoplay] Queue state after next(): {}", queue_info);
 
@@ -817,12 +858,40 @@ pub extern "system" fn Java_com_dtourolle_jellytau_player_JellyTauPlayer_nativeO
                         });
                     }
 
-                    // Start countdown if auto_advance enabled
                     if auto_advance {
-                        controller
-                            .lock()
-                            .await
-                            .start_autoplay_countdown(next_episode, countdown_seconds);
+                        // Background audio-only episode: the frontend that normally
+                        // performs the advance (goto /player/<id>) is suspended, so
+                        // the backend must load the next episode's audio-only stream
+                        // itself — otherwise playback just stops at the boundary.
+                        let is_bg_audio_episode =
+                            controller.lock().await.current_is_audio_episode();
+                        if is_bg_audio_episode {
+                            log::info!(
+                                "[Autoplay] Background audio episode — advancing to {} in backend",
+                                next_episode.id
+                            );
+                            let ctrl = controller.lock().await;
+                            if let Err(e) = ctrl
+                                .advance_to_next_episode_audio_only(&next_episode.id)
+                                .await
+                            {
+                                log::error!(
+                                    "[Autoplay] Background audio advance failed: {} — stopping",
+                                    e
+                                );
+                                if let Some(emitter) = EVENT_EMITTER.get() {
+                                    emitter.emit(PlayerStatusEvent::PlaybackEnded);
+                                }
+                            } else {
+                                ctrl.emit_queue_changed();
+                            }
+                        } else {
+                            // Foreground: frontend drives the advance off the countdown.
+                            controller
+                                .lock()
+                                .await
+                                .start_autoplay_countdown(next_episode, countdown_seconds);
+                        }
                     }
                 }
                 Err(e) => {
@@ -1002,7 +1071,8 @@ fn start_playback_service() -> Result<(), String> {
         .map_err(|e| format!("Failed to convert ClassLoader: {}", e))?;
 
     // Load the JellyTauPlayer class using the app's class loader
-    let player_class_name = env.new_string("com.dtourolle.jellytau.player.JellyTauPlayer")
+    let player_class_name = env
+        .new_string("com.dtourolle.jellytau.player.JellyTauPlayer")
         .map_err(|e| format!("Failed to create class name string: {}", e))?;
 
     let player_class_obj = env
@@ -1036,13 +1106,8 @@ fn start_playback_service() -> Result<(), String> {
     }
 
     // Call startPlaybackService() on the player instance
-    env.call_method(
-        &player_obj,
-        "startPlaybackService",
-        "()V",
-        &[],
-    )
-    .map_err(|e| format!("Failed to start playback service: {}", e))?;
+    env.call_method(&player_obj, "startPlaybackService", "()V", &[])
+        .map_err(|e| format!("Failed to start playback service: {}", e))?;
 
     log::info!("[Android] JellyTauPlaybackService start requested");
     Ok(())
@@ -1056,7 +1121,10 @@ fn start_playback_service() -> Result<(), String> {
 /// @param initial_volume Initial volume level (0-100)
 #[cfg(target_os = "android")]
 pub fn enable_remote_volume(initial_volume: i32) -> Result<(), String> {
-    log::info!("[Android] Enabling remote volume control (volume={})", initial_volume);
+    log::info!(
+        "[Android] Enabling remote volume control (volume={})",
+        initial_volume
+    );
 
     // Ensure the playback service is started first
     start_playback_service()?;
@@ -1078,7 +1146,8 @@ pub fn enable_remote_volume(initial_volume: i32) -> Result<(), String> {
         .map_err(|e| format!("Failed to convert ClassLoader: {}", e))?;
 
     // Load the JellyTauPlaybackService class using the app's class loader
-    let service_class_name = env.new_string("com.dtourolle.jellytau.player.JellyTauPlaybackService")
+    let service_class_name = env
+        .new_string("com.dtourolle.jellytau.player.JellyTauPlaybackService")
         .map_err(|e| format!("Failed to create class name string: {}", e))?;
 
     let service_class_obj = env
@@ -1146,7 +1215,8 @@ pub fn disable_remote_volume() -> Result<(), String> {
         .map_err(|e| format!("Failed to convert ClassLoader: {}", e))?;
 
     // Load the JellyTauPlaybackService class using the app's class loader
-    let service_class_name = env.new_string("com.dtourolle.jellytau.player.JellyTauPlaybackService")
+    let service_class_name = env
+        .new_string("com.dtourolle.jellytau.player.JellyTauPlaybackService")
         .map_err(|e| format!("Failed to create class name string: {}", e))?;
 
     let service_class_obj = env
@@ -1273,6 +1343,66 @@ pub fn update_lockscreen_metadata(meta: &LockscreenMetadata) -> Result<(), Strin
     Ok(())
 }
 
+/// Set the base position offset (seconds) on the lockscreen MediaSession.
+///
+/// Calls `JellyTauPlaybackService.setPositionOffset(double)`. No-op if the
+/// service isn't running yet, so it's safe to call unconditionally.
+pub fn set_position_offset(offset_seconds: f64) -> Result<(), String> {
+    let vm = JAVA_VM.get().ok_or("JavaVM not initialized")?;
+    let mut env = vm.attach_current_thread().map_err(|e| e.to_string())?;
+
+    let context = APP_CONTEXT.get().ok_or("Context not initialized")?;
+
+    let class_loader = env
+        .call_method(context, "getClassLoader", "()Ljava/lang/ClassLoader;", &[])
+        .map_err(|e| format!("Failed to get ClassLoader: {}", e))?
+        .l()
+        .map_err(|e| format!("Failed to convert ClassLoader: {}", e))?;
+
+    let service_class_name = env
+        .new_string("com.dtourolle.jellytau.player.JellyTauPlaybackService")
+        .map_err(|e| format!("Failed to create class name string: {}", e))?;
+
+    let service_class_obj = env
+        .call_method(
+            &class_loader,
+            "loadClass",
+            "(Ljava/lang/String;)Ljava/lang/Class;",
+            &[JValue::Object(&service_class_name.into())],
+        )
+        .map_err(|e| format!("Failed to load JellyTauPlaybackService class: {}", e))?
+        .l()
+        .map_err(|e| format!("Failed to convert to Class: {}", e))?;
+
+    let service_class = JClass::from(service_class_obj);
+
+    let service_obj = env
+        .call_static_method(
+            &service_class,
+            "getInstance",
+            "()Lcom/dtourolle/jellytau/player/JellyTauPlaybackService;",
+            &[],
+        )
+        .map_err(|e| format!("Failed to get service instance: {}", e))?
+        .l()
+        .map_err(|e| format!("Failed to convert to object: {}", e))?;
+
+    // Service not running yet - nothing to offset.
+    if service_obj.is_null() {
+        return Ok(());
+    }
+
+    env.call_method(
+        &service_obj,
+        "setPositionOffset",
+        "(D)V",
+        &[JValue::Double(offset_seconds)],
+    )
+    .map_err(|e| format!("Failed to set position offset: {}", e))?;
+
+    Ok(())
+}
+
 /// Stub implementations for non-Android platforms
 #[cfg(not(target_os = "android"))]
 pub fn enable_remote_volume(_initial_volume: i32) -> Result<(), String> {

src-tauri/src/player/autoplay.rs

@@ -1,7 +1,7 @@
 // Autoplay decision logic
 // TRACES: UR-023, UR-026 | DR-047, DR-048, DR-029
-use serde::{Deserialize, Serialize};
 use crate::repository::types::MediaItem;
+use serde::{Deserialize, Serialize};
 
 /// Autoplay decision result - determines what happens after playback ends
 #[derive(specta::Type, Debug, Clone, Serialize)]

src-tauri/src/player/backend.rs

@@ -163,7 +163,12 @@ impl PlayerBackend for NullBackend {
     }
 
     fn play(&mut self) -> Result<(), PlayerError> {
-        if let PlayerState::Paused { media, position, duration } = &self.state {
+        if let PlayerState::Paused {
+            media,
+            position,
+            duration,
+        } = &self.state
+        {
             self.state = PlayerState::Playing {
                 media: media.clone(),
                 position: *position,
@@ -174,7 +179,12 @@ impl PlayerBackend for NullBackend {
     }
 
     fn pause(&mut self) -> Result<(), PlayerError> {
-        if let PlayerState::Playing { media, position, duration } = &self.state {
+        if let PlayerState::Playing {
+            media,
+            position,
+            duration,
+        } = &self.state
+        {
             self.state = PlayerState::Paused {
                 media: media.clone(),
                 position: *position,
@@ -322,6 +332,7 @@ mod tests {
             gapless_playback: false,
             normalize_volume: true,
             volume_level: VolumeLevel::Loud,
+            ..Default::default()
         };
 
         backend.set_audio_settings(&settings).unwrap();
@@ -370,6 +381,7 @@ mod tests {
             artist_items: None,
             artists: Some(vec!["Test Artist".to_string()]),
             primary_image_tag: None,
+            image_id: None,
             item_type: Some("Audio".to_string()),
             playlist_id: None,
             duration: Some(180.0),
@@ -428,6 +440,7 @@ mod tests {
             artist_items: None,
             artists: Some(vec!["Test Artist".to_string()]),
             primary_image_tag: None,
+            image_id: None,
             item_type: Some("Audio".to_string()),
             playlist_id: None,
             duration: Some(180.0),
@@ -480,6 +493,7 @@ mod tests {
             artist_items: None,
             artists: Some(vec!["Test Artist".to_string()]),
             primary_image_tag: None,
+            image_id: None,
             item_type: Some("Audio".to_string()),
             playlist_id: None,
             duration: Some(180.0),

src-tauri/src/player/events.rs

@@ -156,6 +156,25 @@ pub enum PlayerStatusEvent {
         /// Target position in seconds (only meaningful for "seek").
         position: Option<f64>,
     },
+    /// Ask the frontend webview `<audio>` element to load and play a stream.
+    ///
+    /// Emitted by `WebviewAudioBackend` on platforms with no native audio
+    /// backend (e.g. Windows): audio-only playback is rendered by an `<audio>`
+    /// element in the webview, mirroring how all video already renders through
+    /// the webview `<video>`. The element then reports its state/position back
+    /// through the `player_report_*` commands, so the Rust controller stays the
+    /// single source of truth. Subsequent play/pause/seek/stop reach the element
+    /// via `ControlCommand`.
+    WebviewAudioLoad {
+        /// Stream URL for the `<audio>` element to play.
+        url: String,
+        /// Jellyfin item id, used as the media_id when reporting state back.
+        media_id: Option<String>,
+        /// Resume position in seconds (0 = start from the beginning).
+        position: f64,
+        /// Whether to begin playing immediately after loading.
+        autoplay: bool,
+    },
 }
 
 /// Trait for emitting player events to the frontend.

src-tauri/src/player/media.rs

@@ -67,9 +67,16 @@ pub struct MediaItem {
     /// Artists as array of strings (fallback when artist_items not available)
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub artists: Option<Vec<String>>,
-    /// Primary image tag for artwork
+    /// Primary image tag for artwork.
+    ///
+    /// Legacy Jellyfin name; being replaced by `image_id` (same value). Dual-carried
+    /// while the frontend migrates (docs/specs/frontend-domain-model.md).
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub primary_image_tag: Option<String>,
+    /// Neutral image identifier the frontend resolves to a URL — replaces
+    /// `primary_image_tag`.
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub image_id: Option<String>,
     /// Item type (Audio, Movie, Episode, etc.)
     #[serde(rename = "type", default, skip_serializing_if = "Option::is_none")]
     pub item_type: Option<String>,
@@ -138,8 +145,12 @@ impl MediaItem {
     /// Get the Jellyfin item ID if available
     pub fn jellyfin_id(&self) -> Option<&str> {
         match &self.source {
-            MediaSource::Remote { jellyfin_item_id, .. } => Some(jellyfin_item_id),
-            MediaSource::Local { jellyfin_item_id, .. } => jellyfin_item_id.as_deref(),
+            MediaSource::Remote {
+                jellyfin_item_id, ..
+            } => Some(jellyfin_item_id),
+            MediaSource::Local {
+                jellyfin_item_id, ..
+            } => jellyfin_item_id.as_deref(),
             MediaSource::DirectUrl { .. } => None,
         }
     }
@@ -151,9 +162,7 @@ impl MediaItem {
     pub fn playback_url(&self) -> String {
         match &self.source {
             MediaSource::Remote { stream_url, .. } => stream_url.clone(),
-            MediaSource::Local { file_path, .. } => {
-                file_path.to_string_lossy().to_string()
-            }
+            MediaSource::Local { file_path, .. } => file_path.to_string_lossy().to_string(),
             MediaSource::DirectUrl { url } => url.clone(),
         }
     }
@@ -343,6 +352,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: None,
             playlist_id: None,
             duration: None,
@@ -378,6 +388,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: None,
             playlist_id: None,
             duration: None,
@@ -412,6 +423,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: None,
             playlist_id: None,
             duration: None,
@@ -446,6 +458,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: None,
             playlist_id: None,
             duration: None,
@@ -487,6 +500,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: None,
             playlist_id: None,
             duration: None,
@@ -521,6 +535,7 @@ mod tests {
             artist_items: None,
             artists: None,
             primary_image_tag: None,
+            image_id: None,
             item_type: Some("Movie".to_string()),
             playlist_id: None,
             duration: Some(120.0),