When a grabbed release fails (transfer error / peer-cancel / never lands), the engine
now retries instead of giving up — the music-style depth:
- Grab stores the OTHER accepted results as a retry pool + the search context (schema
v16: candidates / search_ctx / tried_queries / tried_files / attempts).
- core/video/retry.py (pure, tested): plan_retry() → try the next-best candidate; when
the pool is dry, next_query() generates an ALTERNATE query (movie: drop the year; TV:
numbering variants) to re-search; budget MAX_ATTEMPTS=6. merge_candidates dedupes
against already-tried releases.
- Monitor: on failure, _fail_or_retry hops to the next candidate inline; if none, flips
the row to a new 'searching' state and a background requery thread re-searches the
alternate query, evaluates against the profile, and starts the best fresh hit — or
marks failed once truly exhausted. 'searching' rows are owned by their thread.
- Page: 'Searching' status (Trying another release…) + a 'Nx' attempt badge.
16 tests (retry engine + candidate-retry transition); ruff clean on touched files.
Fixes the 'cancelled but still shows running' stuck bug and adds real depth:
- classify_state now distinguishes 'cancelled' from 'failed'.
- Monitor is robust to slskd forgetting a transfer: if it's gone, it first tries to
complete from the FILE on disk (survives the music 'Clean Completed Downloads'
auto-clear), else counts misses and fails the row after ~8 polls instead of hanging
on 'downloading' forever. Cancelled transfers → cancelled status.
- POST /downloads/cancel (slskd DELETE transfer + mark cancelled) and /downloads/retry
(re-grab the same release). get_video_download(id) added; clear includes cancelled.
process_download stays pure (fs/slskd injected); 15 tests, ruff + guard clean.
Phase B (page: tabs/queue/history/cancel+retry buttons) next.
Phase 2 — the engine:
- core/video/download_monitor.py: a daemon thread polls slskd for active video
downloads, updates progress, and on completion MOVES the file from the shared
download folder into the per-type library folder + marks it completed. The
per-download decision (process_download) is pure (fs + slskd injected) — 6 tests.
- POST /downloads/grab: validates (Soulseek-only v1), resolves the target library by
kind, starts the slskd download, records the row, lazily starts the monitor.
- GET /downloads/active (list + ensure monitor running) · POST /downloads/clear
(drop finished).
14 tests, isolation guard + ruff clean. Grab button + Downloads page next.
