`resolveVideoSource` chose between a local file and a remote URL for video playback. Backend-owned stream selection took that decision into Rust — `media_local_selection` for a downloaded file, `get_stream_selection` for a streamed one — and its last caller went with it. What remained was the function plus sixty lines of tests exercising nothing that ships. `fittedVideoSize` computed the rendered size of a video letterboxed into its container. Nothing has ever called it: it arrived with the fix that made the video fill its viewport and was superseded by `object-fit: contain` in the same change. There is some irony in a helper that models letterboxing sitting unused beside a container that was not letterboxing at all — the bug fixed in the previous commit was CSS, and this function would not have helped. A survey for exported symbols referenced only by their own tests finds 22 more. Most are legitimate — test mocks, deliberate reset hooks, public utility APIs — and the rest are unrelated to this work, so they are left for a cleanup that can be reviewed on its own terms rather than smuggled into a playback branch. Also records in the spec why DR-231's design changed. Reparenting Tauri's webview into a GtkOverlay aborts the process on the first click: Linux calls `attach_resize_handler` unconditionally (the Windows path guards it with `is_decorated()`), and its handler walks webview -> GtkBox -> GtkWindow with an unwrap that an overlay breaks. So the webview is not moved at all — mpv draws into the default vbox's own `draw` handler via `gdk_cairo_draw_from_gl()`, and GTK's container-before-children order puts the webview on top for free. No reparent, one less widget, and nothing a Tauri upgrade can invalidate by assuming its own layout.

JellyTau
A cross-platform Jellyfin client built with Tauri, SvelteKit, and TypeScript.
Business logic lives in a Rust backend; a UI-rich Svelte frontend handles presentation and talks to it over Tauri's IPC. Targets Linux (libmpv) and Android (ExoPlayer).
Getting Started
This project uses bun as its package manager.
# Activate the Rust environment (fish shell)
source "$HOME/.cargo/env.fish"
# Install dependencies
bun install
# Run in development
bun run tauri dev
# Type-check the frontend
bun run check
# Build for Linux
bun run tauri build
# Build for Android
bun run tauri android build
For the full set of build, test, and Android helper scripts, see scripts/README.md.
Documentation
| Topic | Location |
|---|---|
| Architecture overview & subsystem docs | docs/architecture/ |
| Requirements, traceability & technical debt | docs/requirements.md |
| Build & release process | docs/build/build-release.md |
| Docker builds | docs/build/docker.md |
| Traceability tooling & CI | docs/traceability.md, docs/traceability-ci.md |
| Release checklist | docs/release-checklist.md |
| UX flows | docs/ux-flows.md |
| CI operations (builder image, secrets, runner) | docs/build/ci-operations.md |
Contributing
CONTRIBUTING.md covers the setup, the gates a change has to pass, and the two rules that catch people out (bug fixes start with a failing test; Jellyfin's taxonomy stays in Rust). Please also read the Code of Conduct.
Found a security problem? Do not open an issue — see SECURITY.md.
Verifying a download
Every release publishes SHA256SUMS covering all of its artifacts, plus an SBOM
of what went into the build:
sha256sum -c SHA256SUMS
Desktop builds update themselves from Settings → Updates, verifying each payload against JellyTau's signing key before installing. Android installs are handled by the system installer, so the app links to the releases page instead.
Recommended IDE Setup
VS Code + Svelte + Tauri + rust-analyzer.
License
MIT