Files
jellytau/docs/specs
dtourolle 7545de6cc7 refactor: delete two orphans, and record why the reparent design changed
`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video fill its viewport and was superseded by `object-fit: contain` in the same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.
2026-08-22 13:45:04 +02:00
..

Specs index

Feature specs for JellyTau. Start a new one from SPEC-TEMPLATE.md and run it past SPEC-REVIEW-CHECKLIST.md before accepting it.

What lives here

Only work that has not shipped. Once a spec is fully implemented its design is folded into the architecture docs — which are the maintained description of the build — and the spec file is deleted. Git history keeps the original, including its rejected alternatives and acceptance criteria; the architecture docs keep the reasoning that a future change still needs.

So: a file in this directory is a promise, not a description. If you want to know how something works, read docs/architecture/. If you want to know what is planned, read here.

Status vocabulary

Status Meaning
Proposed Written, not accepted. Nothing built.
Accepted Agreed as the design; implementation not started or not finished.
Partially implemented Some parts shipped; the spec names what is left.
Design authority No code of its own — it records a decision later specs act on.

Next free requirement ids (always re-check requirements.md before allocating): UR-079, IR-033, DR-232. Three specs below suggested ids that have since been taken by other work; each carries a ⚠️ note at the top.

Partially implemented

Spec What landed What is left
frontend-domain-model.md Catalog surface: MediaKind, from_jellyfin isolated, ticks → ms primaryImageTagimageId (~30 sites); player/session/reporting tick math; stream.type
libmpv2-migration.md LICENSE The libmpvlibmpv2 crate swap
read-through-media-cache.md DR-126…128, DR-133…138 — cache entries are download rows; local playback of downloads DR-122/124/125 — the read-through capture. DR-121 shipped as backend-owned stream selection and left this spec
scoped-search-boundary-implementation.md Stage 1: SearchScope owned by Rust (DR-063…067) Stage 2: result-side grouping (GROUP_ITEM_TYPES still in searchScope.ts)

Not started

Spec Blocked on / note
desktop-native-video.md mpv draws video on every desktop platform, then the webview <video> path and hls.js are deleted. Converts a measured 7% direct-play rate toward Android's 85%. Stacked on backend-owned stream selection.
build-provenance.md build.rs is still bare. ⚠️ suggested id DR-093 is taken.
player-facade-enforcement.md ~60 commands.player* sites still outside the facade; no lint rule. ⚠️ suggested id DR-095 is taken.
windows-native-audio-backend.md Blocked on the libmpv2 swap. ⚠️ suggested id IR-030 is taken.
linux-native-video-spike.md Spike run 2026-08-21: compositing works on Linux, X11 and Wayland. G1-G6 green bar the Tauri default_vbox() half of G1. The adaptive-bitrate question it was waiting on is answered: the server publishes one EXT-X-STREAM-INF, so there is no ladder for mpv to lose (DR-229). StreamSelection (DR-225) is the contract to consume.

Design authority

Spec Role
playback-backend-unification.md Why video cannot unify onto one native engine and audio can. The audio half has since shipped on Android; Windows has not.
scoped-search-boundary.md The boundary design the check:boundary rule came from. Stage 1 built.
scoped-search.md Superseded in part — its "frontend only, no Rust changes" decision is the leak the boundary spec reversed. UX still current.

Where the shipped specs went

Sixteen specs were folded into the architecture docs and deleted (2026-08-21). Where to look for each:

Shipped work Now documented in
Account menu & global chrome 02-svelte-frontend.md — App Shell and Chrome
Library mosaic 02-svelte-frontend.md — Library Mosaic
Series current-episode navigation 02-svelte-frontend.md — Series and Episode Navigation
Downloads as an offline library 02-svelte-frontend.md — Downloaded Browse
Favourites browsing 01-rust-backend.md — Favorites System
Streaming bitrate cap 01-rust-backend.md — Streaming quality ladder
Locally-indexed search 03-data-flow.md — Search Flow; 01-rust-backend.md — Background workers
Offline downloaded-only filter 06-downloads-and-offline.md — Offline Catalog Visibility
Audio equalizer · Android audio settings parity 05-platform-backends.md — Audio settings on ExoPlayer
Android native video spike 05-platform-backends.md — Native Video Compositing
Video background audio 05-platform-backends.md — Background Audio Handoff
Traceability gate repair traceability-ci.md
Boundary tripwire hardening scripts/check-frontend-boundary.sh (its header is the spec)
Playback docs corrections · req-coverage script removal Nothing to document — both were corrections that have been applied