Opening a library that is not Music, Movies or TV served whatever
happened to be cached — films under Books, albums under Photos — rather
than the library's own contents.
The cached-browse query matched a library parent with an EXISTS that
never referenced the item:
OR EXISTS (SELECT 1 FROM libraries l
WHERE l.id = ? AND l.server_id = i.server_id)
It asks only whether a library with the requested id exists, so it is
true for every cached row the moment the parent is any library. The three
typed libraries concealed it because their landing pages pass
include_item_types, which narrowed the result to albums or films or
series; the generic library page passes none, so nothing narrowed it at
all.
`library_id` now decides wherever the cache kept one. That is the
server's own answer, and the only thing that can scope a library whose
type has no mapping (Books, Photos, Collections) or none at all — a
mixed library, where Jellyfin sends CollectionType null. The
collection_type/item_type taxonomy stays as the fallback for rows written
before the link was stored, and a library with neither matches nothing
and falls through to the server, which does know what is in it.
The taxonomy is now one macro shared with the downloaded listing. That
listing had the identical defect and it was fixed there alone (DR-167) —
the comment there even says the mapping "is needed in two places that
must agree", which was true of a third place nobody looked at.
One existing assertion changed rather than being worked around:
UT-206 expected a lib-2 album back from a lib-1 listing, which only held
because of this bug. It is about parameter binding order, so it keeps
testing exactly that, now with an album that is really in lib-1.

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