Deep-review round 5, over round 4's own fixes.
- `notifyActionError` preferred the server's `detail` over the caller's translated fallback, and
`reportFailure` deliberately leaves 403/404/429 to the caller — so for exactly those statuses the
dozen call sites round 4 converted started printing whatever English a route hand-wrote into an
otherwise Hungarian UI ("No user with that email.", "Not subscribed to this channel", "Unknown
job"). A STRUCTURED detail is still preferred: `req` has already run it through `localizeDetail`,
so it is both localized and more specific. A plain string is not.
- The other half of the same defect, on the backend: round 4's `get_or_404(what="channel")` sweep
reached exactly ONE of the five identical sites in channels.py and shipped the HU/EN string with
it, so the Block button said it in Hungarian and the four controls beside it in English. All five
are converted, and the subscription / share-recipient / scheduler-job 404s with them (two new
reasons in both locales).
- `PlexCollectionEditor`'s add/remove, take-over and delete were try/finally with no catch — in the
very file round 4 edited to give `createNew` one. 403 and 404 are the caller's to report, so the
tick simply never appeared and a CONFIRMED "delete collection" did nothing, silently.
- `UploadDialog` is the only `uploadReq` caller and kept an empty catch whose comment still claimed
the global error modal had it. It had not since `reportFailure` became shared: a proxy 502 raised
only the self-clearing connection notice and a 413/403/404 nothing at all, so the dialog snapped
back to its pre-upload state with no error named. The user's own Cancel stays silent — and since
a cancel and a network drop both carry status 0, that difference is now a named `isAborted`
rather than a string literal at each end.
Regression tests for each (5 vitest, 2 pytest, plus two existing assertions corrected), all
mutation-checked: 6 mutations, each red on the assertion it is named after. vitest 1007,
pytest 1127.
Deep-review round 5, over round 4's own fixes.
- Sessions are keyed by rating_key alone while a session's DIRECTORY is per (key, offset, tag), and
the artifact URL carried no session identity — so once a seek-restart or a second viewer of the
same item took the registry slot, the old viewer's request for `seg_12.ts` was answered 200 with
the new session's twelfth segment: bytes from a different `-ss` offset under `-copyts`, on a
timeline the client is not on. Wrong content with a success status is the one failure a player
cannot notice, and round 4's reclaim-on-404 could never fire on it. The id is in the path now (so
the playlist's relative names resolve back into the same session), a mismatch is a 404, and the
player reclaims at the playhead. The entry playlist's auto-start is gone with it: it could only
ever begin at 0, silently discarding the viewer's position.
- Round 4 exempted paused viewers from the reaper by keeping EVERY finished session for the full
ten-minute idle window — one whole segmented copy of a film per item, on the volume the download
center shares. The signal it needed already existed: an open player checkpoints its position every
10 s whether or not it is playing, so that route now touches the session and the periodic pass is
back on the short rule.
- POST /session's opportunistic reap was never scoped to the key being started: it walked the whole
registry with the 30 s finished rule, so pressing play on ANY item — even a direct-play one, the
call ran before that early return — killed another viewer's paused session. It is gone; the
periodic pass owns reaping.
- A segment that can never arrive no longer polls out the full 20 s: the producer's handle is passed
to `wait_for`, so a finished ffmpeg answers at once. This is a sync route, so each such wait parked
a threadpool worker AND a pooled DB connection, and an ordinary seek past the produced region was
enough to do it.
- The DataError handler's re-raise branch — the half that keeps a genuine DataError a 500 — is
pinned, so simplifying it to an unconditional 422 cannot pass in silence.
Six regression tests (two route-level, in the DB lane), each mutation-checked red on the assertion
it is named after. pytest 1124, vitest 999.
Deep-review round 4, backend half.
- The periodic HLS reaper (round 3) applied the "finished and unfetched for 30 s" rule that only a
NEW session request may apply. A remux finishes long before the film, and a paused player with a
full buffer fetches nothing, so a one-minute pause killed the session and playback died ~30 s after
resuming. The periodic pass is `reap_abandoned` now (the long idle limit, finished or not).
- A subtitle `publish` that could not keep its output (full / read-only cache volume) returned
quietly, so every poll queued the window and the whole-container pass again. It reports failure
and the pass is backed off like a failed read; a cached VTT that cannot be READ is answered
`unavailable` (`cache_unreadable`) instead of scheduling reads that can never land.
- The subtitle routes bound `rating_key` / `sub_ord` (they become a cache file name: a 250-digit
one was ENAMETOOLONG, which pathlib's exists() re-raises -> a 500), and the cache helpers no longer
throw on such a name.
- One app-wide handler turns psycopg's "text fields cannot contain NUL" DataError into a 422: round 3
guarded only the by-rating_key lookup, and `contains=`, `contains_group=`, reorder/bulk key lists
and the collection search still 500'd.
- The hand-written `db.get(...) is None -> 404 "Unknown ..."` siblings use `get_or_404` with a
`what` (channel / video / user), so the Hungarian UI no longer shows English for a gone row.
Deep-review round 3 of bug hunt 2026-09.
- get_or_404 / owned_or_404 answer a structured {code: "not_found", reason: <what>}
(errors.notFound.* in HU+EN, generic fallback). The structured-404 fix of round 2 had gone into the
ad-hoc `_own_playlist` (CLAUDE.md's "Not" pattern) while the shared helpers stayed string-only, so
views, tags, pins, Plex playlists, invites and users still 404'd in English. `_own_playlist` now
goes through owned_or_404; admin's hand-rolled user lookups use get_or_404.
- A move into a list that is gone names the TARGET (reason "move_target") — "this playlist doesn't
exist any more" was read as the list on screen, which still exists.
- Every refusal in the playlists router is a {code: "playlist", reason} (playlists.errors.* HU+EN)
instead of a bare English string shown verbatim in the Hungarian UI.
- `req` / `uploadReq` mark the errors they already put on screen (the error dialog, the connection
notice, the 401 sign-out), and notifyActionError skips those. The watched toggles, the saved views
and a playlist delete toasted a fault the dialog was already showing; Playlists' two hand-written
status filters now go through the same check.
peter