Commit Graph

94 Commits

Author SHA1 Message Date
bvandeusen 6e3c5f697f feat(ml): tag-eval backend — head-vs-centroid learning-curve eval (persisted)
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Slice 1 of milestone #114 (tagging v2). Proves the frozen-embedding + trained-
head spine on the operator's own data, reusing the SigLIP embeddings already
stored on image_record — no re-embedding, no GPU.

Per concept: train a logistic-regression HEAD (positives + negatives = explicit
rejections + sampled unlabeled) vs the old single-CENTROID baseline; report
cross-validated precision/recall/AP for both, a LEARNING CURVE (AP/F1 as tagged
positives grow 10→30→100→300), and example image ids (head-would-suggest /
head-doubts-positive) to eyeball.

Persisted so the report SURVIVES navigation (operator-flagged): the run + full
report live in a new tag_eval_run row (mirrors library_audit_run); the admin
card will rehydrate from GET on mount, not transient state.

- models.TagEvalRun + migration 0056; runs on the ml queue (only worker with
  numpy/sklearn) — numpy/sklearn lazy-imported so the API can still enqueue.
- services/ml/tag_eval (compute + start helper, one-running guard), tasks.ml
  .tag_eval_run, api/tag-eval (POST create, GET history light / detail w/ report).
- recover_stalled_tag_eval_runs sweep + retention (keep last 20) + 5-min beat
  (rule 89). scikit-learn added to requirements-ml.
- tests: param normalization + the rehydrate read-path + create/conflict.

Frontend admin card (trigger + render persisted report) follows next.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-27 22:49:10 -04:00
bvandeusen 4272a19d40 fix(external): split fetch timeout into read (60s) + total (30m) budgets (#883)
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The single _FETCH_TIMEOUT=3000s meant different things per host: a TOTAL
wall-clock for mega (subprocess), but only a per-read socket timeout for HTTP
hosts (requests' timeout is the idle gap between bytes, never a total). So a
stalled HTTP connection tied up a download-worker slot AND the per-host
serialize lock for ~50 min before failing (operator-flagged 2026-06-17).

Split into two limits in external_fetch:
- read timeout (_READ_TIMEOUT=60s, with _CONNECT_TIMEOUT=30s) → requests gets
  (connect, read); a stalled socket now fails in ~60s.
- total budget (_TOTAL_TIMEOUT=30min) → enforced as a wall-clock deadline
  across chunks in _stream_to_file (HTTP has no total-download timeout), and
  passed as the subprocess total for mega.
fetch_external() signature: timeout= → read_timeout=/total_timeout=. gdrive
(gdown) self-manages; the celery hard limit is the outer backstop.

Also lowered the per-host lock TTL 3600→2400 so a worker that dies holding it
can't wedge a host's links much past one fetch's budget.

Each external link is already one Celery task (sweep enqueues one
fetch_external_link.delay per link), so these budgets are per-link.

Tests: total-budget-exceeded cleans the .part; HTTP gets (connect, read);
mega gets the total. Worker fakes updated to **kwargs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 21:15:49 -04:00
bvandeusen 258c77dfcd fix(maint): raise recovery-sweep threshold for fetch_external_link (#883)
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External file-host fetches run to a 60-min hard limit (time_limit=3600,
per-fetch _FETCH_TIMEOUT=3000s), far longer than the recovery sweep's 5-min
default. recover_stalled_task_runs was phantom-flagging healthy in-flight
fetches as "RecoverySweep: no completion signal received within 5 min"
before the task's own timeout/error handling could surface the real error
(operator-flagged: target 414 swept at 6.6min).

The sweep already has per-queue/per-task overrides for long tasks, but
fetch_external_link was never added and its TaskRun records queue='default'
(no queue override) despite external.* routing to download. Add a task-name
override of 65 min (time_limit 60 + 5 buffer); task-name precedence makes it
robust regardless of the recorded queue. No new internal timeout needed —
the existing _FETCH_TIMEOUT + soft_time_limit + except-block log.exception
already capture the real failure once the sweep stops preempting.

Pinned tests: external-fetch override survives a 10-min row / flags a 70-min
row on queue='default'; invariant guard asserts override >= hard time_limit.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 20:54:39 -04:00
bvandeusen 51201b459e fix(ml): per-task async engine for recompute_centroid (#881)
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recompute_centroid + recompute_centroids were the only tasks still using
the process-wide singleton extensions.get_session() under asyncio.run().
The async engine's asyncpg pool is bound to the loop it was created on;
each Celery task runs a fresh asyncio.run() loop, so after the first
invocation the cached engine handed loop-A connections to loop B and raised
"Future attached to a different loop" — every recompute after the first in
a worker process failed (~35ms, fails on first DB await).

Convert both to the established per-task async_session_factory() pattern
(NullPool engine created + disposed inside the task's own loop), matching
scan/download/admin tasks. No get_session usages remain in tasks/.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 19:19:43 -04:00
bvandeusen 540151290b feat(cleanup): purge misgrabbed gated-post blurred previews (#874 follow-up)
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A one-shot Maintenance action to remove the blurred locked-preview images
the ingester downloaded from tier-gated Patreon posts before #874.

current_user_can_view was never persisted, so the cleanup re-walks each
enabled Patreon source (read-only) to re-derive which posts are gated now
and the blurred filehashes Patreon serves for them, then matches by
CONTENT HASH against stored source_filehash. Because the hash is
content-addressed, a real file downloaded when access existed has a
different hash and can never match — regained-then-lost-access content is
provably spared (operator's hard requirement). NULL source_filehash =>
unverifiable, kept + reported.

On apply: delete matched ImageRecords + files (provenance cascades),
clear seen/dead-letter ledger rows for those hashes so the real media
re-ingests if access returns, and delete gated posts left bare. Shares
one match predicate between preview and apply (rule 93).

- cleanup_service: collect_gated_previews + purge_gated_previews
- tasks.admin: purge_gated_previews_task (async re-walk bridge, timeboxed)
- api.admin: POST /maintenance/purge-gated-previews
- GatedPurgeCard.vue in Settings > Maintenance (preview -> confirm -> apply)
- tests: collect predicate, hash-match delete/spare/unverifiable, ledger
  clear, bare-post removal, no-op

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 15:20:35 -04:00
bvandeusen 369e3de684 feat(ml): cadence-based video frame sampling + min-frame tag aggregation (#747)
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Video tag noise root cause: frames were a FIXED count (6) max-pooled — a tag
firing on one frame survived at peak confidence, and a fixed count under-samples
long multi-scene videos so real scene-local tags looked like noise.

Redesign (operator-steered):
- Sample at a fixed CADENCE — one frame every `video_frame_interval_seconds`
  (default 4) across the 5–95% window — so a tag's frame-presence reflects real
  screen time independent of video length. Capped at `video_max_frames` (default
  64): a long video stretches the spacing instead of exploding into hundreds of
  inferences, bounding per-video cost on the single ml-worker (per-frame ffmpeg
  timeout also cut 60s→30s).
- Aggregate with `_aggregate_video_predictions`: keep a tag only if it appears in
  >= `video_min_tag_frames` sampled frames (≈ that many × interval seconds on
  screen — duration-independent noise rejection), with confidence = MEAN over the
  frames it appears in (not max). Clamps the threshold to the sample count so a
  1–2-frame short video still tags.
- All three knobs are DB-backed ml_settings (migration 0053), patchable via
  /api/ml/settings + sliders in the ML settings card — replaces the
  VIDEO_ML_FRAMES env var (product-not-project).

Tests: aggregation drops one-frame noise + means corroborated tags + clamps on
short videos; settings round-trip + min>max validation. Replaced the
_maxpool_predictions unit test.

NOTE: this is the QUALITY half of #747. The perf half — the ml-worker runs
CPU-only — is GPU enablement, tracked separately in #872.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 11:07:00 -04:00
bvandeusen 41652db20f feat(maintenance): retroactive video-dedup action — preview + apply (#871)
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Phase 2 of #871: clean up the duplicate videos already in the library (the #859
"same video from multiple sources" clutter). Import-time dedup (Phase 1) only
prevents NEW dups; this is the operator-triggered cleanup of existing ones.

cleanup_service.dedup_videos(dry_run):
- backfill_video_durations: re-probe NULL-duration videos (pre-#871 rows) so the
  existing library participates; idempotent (only NULL rows), writes a negative
  sentinel for un-probeable files so they're neither re-probed forever nor matched.
- find_video_dup_groups: cluster same-artist videos by duration (±tol) + aspect,
  anchored per cluster to bound the span (no chain drift); keeper = highest pixel
  area then bytes. Reuses the importer's _VIDEO_DUP_* tolerances.
- apply: re-point each loser's post links to the keeper (so no post loses the
  video) THEN delete the redundant records + files via delete_images (cascade).
  dry_run shares the same discovery predicate and returns the projection only
  (rule 93). Tags on a loser are NOT merged (noted; videos rarely hand-curated).

- dedup_videos_task (maintenance queue; summary → task_run.metadata).
- POST /maintenance/dedup-videos {dry_run} + GET /maintenance/task-result/<id> so
  the card shows the dry-run projection before the destructive apply.
- VideoDedupCard: Preview → shows groups/redundant/reclaimable, then Apply behind
  a confirm dialog. Mounted in the Maintenance panel.

Tests: dedup collapses + re-links the loser's post to the keeper + removes the
file; dry-run deletes nothing; distinct durations aren't grouped; task registered.
(Migration 0052 for duration_seconds already shipped with Phase 1.)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 08:31:50 -04:00
bvandeusen 949c9abcc6 fix(external): path-safe unlink + per-link staging + orphan repair (#859)
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External downloads import IN PLACE, so the post-attach dedup-skip unlink could
delete a file that IS an ImageRecord's backing file — orphaning the record and
404-ing on playback. Two sources of that:

- Two links on the same post (same film from mega + gdrive) emitted the same
  filename into one external/<post_id>/ dir; the second overwrote the first.
  Stage per-LINK now (external/<post_id>/<link_id>/) so each file keeps its path.
- The duplicate_hash/duplicate_phash branch unlinked `f` unconditionally. Make it
  path-safe: only unlink when `f` is NOT the existing record's canonical file.

Plus an operator-triggered orphan-repair maintenance task
(prune_missing_file_records_task) to clean up records already orphaned by the
bug: scans ImageRecords, deletes those whose file is gone (cascade), with an
NFS-stall guard that aborts without deleting if a large sample is mostly missing.
Wired through POST /api/admin/maintenance/prune-missing-files and a
MissingFileRepairCard in the Maintenance panel.

Tests: refetch-same-link keeps the canonical file; orphan repair deletes only
real orphans and aborts on the mostly-missing guard.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 01:48:38 -04:00
bvandeusen 05f226a8f6 feat(external): zip-parity provenance/tagging + thorough worker logging
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Operator-requested: a worker download must be tagged + provenance-associated
exactly like an extracted zip, and the path must log well (we won't get it right
first try).

- _route_files now mirrors download_service._phase3_persist branch-for-branch:
  imported/superseded → collect member_image_ids+image_id (provenance-linked via
  the synthesized sidecar, same as extracted-zip members) → caller enqueues
  tag_and_embed + generate_thumbnail; attached → drop on-disk original, and warn
  on an UNEXTRACTED archive (#718 symptom); skipped duplicate → unlink; failed →
  unlink + warn.
- Logging at every stage: start (link/host/post/artist/attempt/url), requeue,
  fetch result (files/bytes) or fetch failure, per-file import decision, dead-
  letter transitions, and done (files/images/duration).
- Parity test: an archive downloaded by the worker is extracted, provenance-
  linked to the SAME post, and tag_and_embed+generate_thumbnail are queued for
  exactly the member images.

Refs FC #830.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-14 15:45:56 -04:00
bvandeusen 96e984cded feat(external): download worker for file-host links (Phase 4b)
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tasks/external.py drives the external_link ledger:
- fetch_external_link(link_id): atomic claim (pending/failed→downloading, so a
  duplicate enqueue no-ops), per-host Redis serialize lock (#720 pattern;
  requeue-with-countdown if busy), fetch via external_fetch into the artist
  library tree, then route each file through importer.attach_in_place via a
  synthesized sidecar so it links to the SAME post (archive→ImageRecords,
  else→PostAttachment; on-disk original removed for captured files, art stays);
  thumbnail+ML enqueue for new images; status downloaded | failed | dead with
  attempts/last_error/completed_at/duration.
- sweep_external_links(): enqueue a bounded batch of actionable links.
- recover_external_links() + prune_external_links(): recovery + retention (#89).
- per-host enable read via getattr (forward-compatible; Settings UI adds the
  columns in 4d — defaults on, rule #26).

Wiring: celery include + route (download lane) + beat (sweep 10m, recover +
prune daily); download_service phase 3 enqueues a sweep after recording links.
Integration tests: download+attach, failure, dead-letter, non-claimable, sweep.

mega still needs the MEGAcmd binary in the runtime image (Phase 4c). Refs #830.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-14 13:44:07 -04:00
bvandeusen 3610ba495f feat(ml): drop image_record.tagger_predictions — image_prediction is sole store (#768 step 3)
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Read cutover verified in prod (suggestions + allowlist read image_prediction;
backfill complete at 908k rows / 51k images). Removes the old JSON column and
everything that fed it:

- ImageRecord.tagger_predictions column removed; migration 0046 DROPs it.
  tagger_model_version kept as the "tagged / current?" signal the backfill
  sweep reads (needs-tagging check switched to tagger_model_version IS NULL).
- tag_and_embed no longer dual-writes the JSON — image_prediction is the only
  write path.
- importer re-import reset drops the JSON line (image_prediction rows are
  already deleted on re-import).
- Retired the one-time #768 backfill task + the #764 prune task, their admin
  endpoints, and their Maintenance cards (Backfill/PrunePredictionsCard).
- Tests seed/assert via image_prediction; stale column refs removed.

Disk reclaim is NOT automatic: DROP COLUMN is a catalog change. Run
`VACUUM FULL image_record` off-hours afterward to return the ~100 GB to the OS
so DB backups go small (#739). image_prediction (~90 MB) stays in pg_dump — it's
the source of truth now.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 18:52:33 -04:00
bvandeusen 65211a3f2f fix(migration): make 0045 DDL-only; backfill image_prediction via batched task (#768)
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The inline INSERT…SELECT backfill in migration 0045 wrapped the table
creation and a ~100 GB pass over image_record.tagger_predictions in one
transaction: nothing committed until the end, it was unmonitorable, and an
earlier MATERIALIZED-CTE form spilled the full 100 GB to temp on NFS. A
deploy got stuck on it for ~2h with image_prediction never appearing.

Split the concerns:
- 0045 now creates ONLY the table + indexes (instant DDL → web boots).
- New backend.app.tasks.admin.backfill_image_predictions_task copies the
  >= store-floor predictions from the JSON into image_prediction, batched by
  id window and committed per chunk: live progress, resumable (re-enqueues
  from the last committed id), idempotent (ON CONFLICT DO NOTHING). json_each
  stays in the DB executor streaming each window — no Python-side 100 GB load,
  no materialization.
- POST /api/admin/maintenance/backfill-predictions + a Maintenance-tab card
  to trigger the one-time run after upgrading.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 09:18:25 -04:00
bvandeusen 22cdf0f334 feat(ml): read suggestions + allowlist from image_prediction (#768 step 2)
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Switch every prediction READER off the JSON column onto the normalized
image_prediction table. Parity by construction: each reader loads the same
{raw_name: {category, confidence}} dict it consumed before (via small
_load_predictions helpers), so all downstream threshold/alias/merge/consensus
logic is byte-identical — only the data source changed.

- suggestions.SuggestionService.for_image (and for_selection via it)
- ml.apply_allowlist_tags (iterates images that have prediction rows)
- importer re-import reset deletes the image's prediction rows
The tagger_predictions JSON column is still dual-written (step 1) so it stays
valid during transition; the backfill task's NULL check still works. Removing
the JSON write + DROP column + retiring the #764 prune is the cleanup
follow-up (needs a quiesced-worker window for the DROP lock).

Tests: shared tests/_prediction_helpers.seed_predictions seeds the table;
read-path tests (suggestions, bulk consensus, allowlist apply, API) seed there
instead of ImageRecord.tagger_predictions.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 16:03:58 -04:00
bvandeusen 79089b50b0 feat(ml): image_prediction table + backfill + dual-write (#768 step 1)
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Normalize tagger predictions out of the image_record.tagger_predictions JSON
blob into a queryable per-prediction table. Step 1 of the cutover (expand):
additive + low-risk — reads still use the JSON, this just adds the table and
keeps it populated.

- ImagePrediction(image_record_id, raw_name, category, score) — stores the
  RAW tagger vocab name (not tag_id) so read-time alias→canonical resolution
  is unchanged. Indexed for per-image reads + by (raw_name, score).
- Migration 0045: create table + set-based backfill from the JSON via
  json_each (fast post-#764-prune). The old column stays (vestigial) and is
  dropped in a later follow-up — DROP needs an ACCESS EXCLUSIVE lock on the
  hot image_record table, so it waits for a quiesced-worker window.
- tag_and_embed dual-writes the rows (delete-then-insert, idempotent);
  tagger_store_floor already applied in infer().

Next: switch suggestion + allowlist reads to the table, then drop the JSON
write. Plan-task #768.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 15:55:32 -04:00
bvandeusen d55e52ae9b feat(admin): prune_low_confidence_predictions backfill task + UI (#764)
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The one-time backfill that actually shrinks the DB: drops stored
tagger_predictions entries below ml_settings.tagger_store_floor from every
image_record row, and clamps any allowlist min_confidence below the floor up
to it. Keep predicate (confidence >= floor) mirrors Tagger.infer's store gate
so backfilled rows match new imports. Keyset by id ASC, idempotent,
self-resumes on the soft time limit; runs on the maintenance_long lane.

pg_dump copies live data only, so this alone fixes the #739 backup timeout —
the reclaim (VACUUM FULL / pg_repack on image_record) is a separate, optional
disk-return step, brief because post-prune the live data is tiny.

- admin.prune_low_confidence_predictions_task + POST /api/admin/maintenance/prune-predictions
- PrunePredictionsCard in the Maintenance panel (shows the current floor)
- tests: registration + prune-keeps->=floor/drops-<floor + allowlist clamp

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 13:57:39 -04:00
bvandeusen 3f92669f12 feat(ml): DB-backed tagger_store_floor (default 0.70), the ingest confidence floor
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Promotes the prediction store-floor from the TAGGER_STORE_FLOOR env (default
0.05) to a DB-backed, Settings-UI-tunable ml_settings column (default 0.70).
Storing every tag down to 0.05 from a ~10k-tag tagger is what grew
image_record's TOAST to ~100 GB; the suggestion path already filters at 0.70
and the centroid/learned path covers lower-confidence preferred tags, so the
sub-0.70 tail is redundant. Foundation for plan-task #764 (backfill + reclaim
land next; this only changes the write gate for NEW imports).

- ml_settings.tagger_store_floor (migration 0044, default 0.70)
- tagger.Tagger.infer(store_floor=...); ml task passes settings.tagger_store_floor
- ML admin GET/PATCH expose it; PATCH rejects a category suggestion threshold
  below the floor (nothing below the floor is stored, so the gap surfaces
  nothing) — server backstop for the UI slider clamp
- Settings → ML: store-floor slider + caption; category sliders min-bound to it

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 13:50:30 -04:00
bvandeusen 9ba3db75fd fix(maintenance): download queue needs a sweep threshold above its 25-min time_limit
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recover_stalled_task_runs used the 5-min default for the download queue,
but download_source legitimately walks up to DOWNLOAD_HARD_TIME_LIMIT
(1500s = 25m). Healthy in-flight Patreon/gallery-dl walks were flagged as
phantom 'RecoverySweep' failures — visible in System Activity but absent
from the Subscriptions view (the download finished ok, reset the source's
consecutive_failures; only the orphaned task_run kept the stamp, since
_finalize only updates rows still 'running').

Add download:30 to QUEUE_STUCK_THRESHOLD_MINUTES — clears the 25-min hard
limit with buffer and matches DOWNLOAD_STALL_THRESHOLD_MINUTES so a real
hard kill is swept by the task-run and event sweeps together. Restores the
documented invariant (every override >= task time_limit). Regression test
pins the threshold above the hard limit so a future limit bump can't
silently re-break it.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-10 11:57:31 -04:00
bvandeusen f2fbe2ae6e tweak(ml): default video frame samples 10 to 6
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Operator: 10-frame max-pooled tagging on video produces a lot of noisy tags, and
the sampling burns time/GPU. Drop the VIDEO_ML_FRAMES default to 6 (still env-
overridable). Fewer frames = less per-frame noise into the max-pool and a smaller
frame-sampling budget. Quality/perf of the whole video path is being reviewed
separately.
2026-06-08 08:52:39 -04:00
bvandeusen b1778ca9f2 obs(ml): tag_and_embed logs file + phase + timing; failures name them
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The task logged nothing and SoftTimeLimitExceeded stringifies to empty, so a
timeout surfaced as a bare 'SoftTimeLimitExceeded()' with no clue which file or
why (operator-flagged 2026-06-08).

- Log start (id/path/mime/bytes/video?), per-phase timing (load_models, video
  probe/sample/infer, tag, embed, persist), and a success summary.
- Track a  + file ; on SoftTimeLimitExceeded log it and re-raise
  SoftTimeLimitExceeded WITH that context (keeps the 'timeout' task_run status
  but gives the activity a real error_message: which file, which phase, elapsed).
- On other exceptions, log context then re-raise the ORIGINAL (preserves
  autoretry for OSError/DBAPIError/OperationalError).

Now a stuck run names the culprit — most likely a slow video (frame sampling is
up to 10x60s ffmpeg) or a huge image; the phase log will say which.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-08 08:49:37 -04:00
bvandeusen a00a2786e3 fix(tags): normalize task fails fast on lock + logs progress
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normalize_tags_task ran to the 40-min hard limit with zero logs (operator-
flagged 2026-06-07). Cause: a per-group merge repoints series_page (via
_repoint_series_pages); during the wedged 0040 migration that held ACCESS
EXCLUSIVE on series_page, the merge's UPDATE blocked on that lock. The time-box
check is at the top of the group loop, so a statement blocked mid-group never
yields back to it — the task sat until the Celery hard kill. No logs because the
only log fired per *finished* group.

- Set lock_timeout=30s on the normalize session (opt-in server_settings on the
  async factory). A blocked merge now raises, the per-group handler rolls back +
  counts an error, and the loop continues — one stuck group can't strand the
  chunk, and the budget checkpoint stays effective.
- Log group count at start + a heartbeat every 25 groups, so a long/slow run is
  diagnosable instead of silent.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 21:02:39 -04:00
bvandeusen daaa7543a8 fix(backup,tags): unwedge backups on NFS (#739) + tag-standardize "0 groups" (#740)
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#739 — DB backups hung on NFS in uninterruptible D-state, defeating the 12-min
subprocess timeout AND Celery's hard limit, so a stuck pg_dump held the
concurrency-1 maintenance_long lane for hours — starving normalize_tags,
re-extract, audits, and the new series rescan (which is why #740 "never
applied"). Three fixes:
- _run_bounded: Popen + bounded post-kill reap; if the child is unkillable
  (D-state) we stop waiting and re-raise TimeoutExpired, freeing the slot. The
  orphan is reaped by the OS once its syscall clears.
- backup_db dumps to a LOCAL temp file then moves the finished .sql to the
  (NFS) _backups dir — pg_dump's long phase is now a DB-socket wait + local
  writes (killable) instead of an NFS write that hangs. backup_images keeps
  bounded-kill (too big to stage locally).
- recover_stalled_backup_runs: split the stall window — db 40 min (was sharing
  images' 7h), so a hung DB backup is flipped to error promptly.

#740 — Standardize tag casing showed "0 groups to change" the instant it was
clicked: onNormCommit overwrote the preview with zeros. Keep the real preview
visible and disable the button while queued; backend apply was already correct.

Tests: fake subprocess.Popen alongside run; bounded-kill fail-fast; local-temp
target; per-kind stall sweep.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 19:20:16 -04:00
bvandeusen c0fd80e694 feat(series): assisted-continuation matcher + suggestion queue — backend (FC-6.3)
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Confirm-only "this post may continue this series" matcher.

- series_suggestion table (post_id, series_tag_id, score, signals jsonb, status
  pending|added|dismissed, UNIQUE(post,series)); migration 0041 + two settings
  knobs (series_suggest_enabled, series_suggest_threshold).
- series_match_service: weighted additive score (title-stem / same-artist /
  page-continuity / shared-distinctive-tags), no single signal gating. The title
  "pattern" is derived on the fly from the post titles already in a series, so it
  sharpens as more are confirmed (no persisted state to drift). Candidates are
  bounded to the post's artist. match_post upserts pending suggestions (UNIQUE +
  on-conflict, respecting prior added/dismissed decisions).
- accept reuses add_post_as_chapter then marks 'added'; dismiss marks 'dismissed'.
- rescan_series_suggestions_task: settings-gated, time-boxed + self-resuming from
  a post-id cursor (maintenance_long lane), like normalize_tags_task.
- API: GET /series/suggestions, POST .../<id>/accept|dismiss, POST .../rescan.
- Settings: enabled + threshold exposed via /settings/import.
- Tests: pure scoring helpers + matcher/accept/dismiss/rescan lifecycle + UNIQUE
  dedup.

Frontend (Suggestions tab + settings card) lands next.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 18:58:18 -04:00
bvandeusen a73d9327d8 fix(maintenance): time-box + self-resume the archive re-extract task
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reextract_archive_attachments loaded ALL PostAttachments and ran in one pass up
to a 30-min soft limit, then died without re-enqueueing — a large archive
backlog would only ever partially process. And a naive re-run can't advance: an
already-extracted archive is still an archive on disk, so it'd re-extract the
same first batch forever.

Give it a real cursor + time-box + self-resume (mirrors normalize_tags_task,
operator-asked 2026-06-07: reasonable timeout, then re-queue so other work keeps
flowing):
- service scans attachments with id > after_id in ascending order, time-boxes
  the chunk, and reports partial=True + resume_after_id (last scanned id).
- task passes a 600s budget and re-enqueues itself from the cursor until the
  scan is exhausted. Routes on the maintenance_long lane.
- This is independent of the maintenance_long lane isolation (already shipped) —
  that stops long tasks starving the quick maintenance queue; this stops the
  re-extract itself dying on a big backlog.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 12:03:13 -04:00
bvandeusen f4f49d407e fix(tags): move _NORMALIZE_CHUNK_SECONDS above the decorator (syntax error)
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The constant + comment landed BETWEEN @celery.task(...) and the function def,
which is a syntax error that broke the whole tasks.admin import (cascaded to
lint E999 + every backend/integration test). Move it above the decorator.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 00:10:03 -04:00
bvandeusen a183be7e6e fix(infra): bump Postgres shm_size (vacuum DiskFull) + raise DB-backup time limit
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Two more maintenance-queue failures from the operator's 24h list:
- vacuum_analyze died with "could not resize shared memory segment to 67MB: No
  space left on device" — Docker's default /dev/shm is 64MB, too small for
  VACUUM (ANALYZE)'s parallel-worker shared memory. Set the postgres service
  shm_size: 512m.
- backup_db_task timed out at its 12-min limit once the DB grew; a pg_dump can't
  be chunked, so raise it to 30/35 min. (A long backup still briefly holds the
  concurrency-1 lane — the structural fix is a dedicated lane for long one-shots.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 00:08:19 -04:00
bvandeusen f2e9ae07dc fix(audit): chunk + self-resume library scans (stop the 2h queue-hog timeouts)
scan_library_for_rule ran one 2-hour pass that timed out on large libraries and
held the concurrency-1 maintenance queue the whole time, starving vacuum/backup/
normalize (operator-flagged — it was the dominant entry in the 24h failures).

It now runs ~10-min chunks and re-enqueues itself until the library is
exhausted, matching the operator's preferred pattern (reasonable timeout → retry
queued → other things process between). New columns (alembic 0039):
resume_after_id persists the keyset cursor so a chunk continues where the last
left off; last_progress_at lets the recovery sweep tell a progressing multi-
chunk audit from a dead one (it now measures staleness from last_progress_at,
not started_at). Matches accumulate across chunks. soft/hard limits dropped
2h→15/16.7 min so the in-chunk budget fires first; a soft-limit backstop
re-enqueues to resume instead of erroring the whole run.

Tests: time-box → re-enqueue (status stays running); resume carries prior
matches and appends new ones. Existing full-scan tests unchanged (small sets
finish in one chunk).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 00:08:19 -04:00
bvandeusen d9d502a60d fix(tags): time-box + self-resume the tag standardization (stop the 40-min timeout)
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normalize_tags_task timed out at the 40-min hard limit on a large back-catalog
(the first run recases the whole booru vocabulary) — operator-flagged, and it
monopolized the concurrency-1 maintenance queue while doing so.

normalize_existing_tags now takes time_budget_seconds: the live run stops
cleanly at the budget and reports {partial, remaining}. The task runs 600s
chunks and re-enqueues itself until nothing remains (idempotent — commits per
group, so the next chunk skips already-canonical groups). Short chunks let the
recovery sweep and other maintenance tasks interleave instead of being blocked
for 40 minutes.

Frontend: the Standardize button is now fire-and-forget ("Queued — runs in the
background; re-run Preview to confirm") instead of poll-until-done, which would
have falsely reported "complete" after the first chunk.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 23:57:06 -04:00
bvandeusen 619e7712c2 fix(patreon): enforce the backfill time-box mid-post (stop overrunning to the soft limit)
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A backfill chunk's time-box (BACKFILL_CHUNK_SECONDS=600) was only checked
between POSTS, but download_post downloads ALL of one post's media
synchronously — so a single media-heavy post could run the chunk far past 600s,
all the way to the Celery soft time limit (1350s), where it was killed and
finalized as error (Pocketacer, event #41330: ran the full 22.5 min).

download_post now polls a should_stop() deadline BEFORE each media item and the
engine passes `now - start >= time_budget_seconds`, so a heavy post stops at the
budget and the remaining media (never marked seen) re-fetch next chunk. Bounds
chunk overrun to one media download instead of one whole post.

Also genericized the soft-limit salvage message — it claimed the "gallery-dl
subprocess" failed, which is wrong for a native Patreon walk; it now describes
the time-budget overrun + per-page checkpoint resume in platform-neutral terms.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 22:20:05 -04:00
bvandeusen 87c7318125 feat(downloads): serialize same-platform downloads (Patreon concurrency cap)
Two concurrent Patreon walks could trip the server rate limit even with each
source pacing its own requests. The platform-cooldown handled the aftermath of
a 429; this adds the preventive half — a per-platform Redis lock so only one
Patreon walk runs at a time. Different platforms still run concurrently up to
the worker concurrency; only a second walk on the SAME serialized platform
waits.

download_source acquires fc:download_lock:<platform> (non-blocking) before the
run. On contention it re-enqueues itself with a short countdown (the pending
event stays — no new event, no log spam), bounded to ~15 min then runs uncapped
as a safety valve. The lock TTL sits just past the hard kill so a SIGKILL'd
worker auto-releases; a backfill chunk only holds it ~10 min, well under the
30-min DownloadEvent recovery sweep. A broker hiccup degrades to uncapped
(prior behaviour) rather than stalling downloads. SERIALIZED_PLATFORMS={patreon};
gallery-dl platforms are left uncapped (self-pacing subprocesses).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 21:22:32 -04:00
bvandeusen 3c89223dcb feat(tags): retro-normalize existing tags to Title Case + merge case-collisions (plan #714)
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Follow-up to #701: new tags are saved canonical, but the back-catalog keeps
whatever casing it was created with. This adds a maintenance action that
Title-Cases every existing tag (collapsing whitespace) and merges
case/whitespace-variant duplicates into one.

Backend:
- tag_service.normalize_existing_tags(session, *, dry_run): groups all tags by
  (kind, coalesce(fandom_id,-1), canonical_name). Per group it picks a survivor
  (prefer an already-canonical member → no rename/self-alias; else the
  best-connected tag → fewest FK repoints; else lowest id), merges the variants
  INTO it via the tested TagService._do_merge (image_tag/allowlist/embedding/
  aliases/series_page repoints + protective ML aliases), then renames the
  survivor to canonical. Losers are deleted before the rename so there's no
  transient unique-index clash; commits per group and isolates failures per
  group. Idempotent — an already-canonical lone tag is a no-op.
- normalize_tags_task (maintenance queue, asyncio.run + per-task NullPool async
  engine, soft 1800/hard 2400) — recovery/timeout/duration covered by FC-3i.
- POST /api/admin/tags/normalize: dry_run=true returns a projection inline
  (group/collision/rename counts + sample); dry_run=false enqueues the task.

Frontend: a "Standardize tag casing" section in TagMaintenanceCard (Cleanup
tab) — preview → apply (polls the activity dashboard to terminal status),
behind a back-up-first warning. admin store gains normalizeTags().

Tests: tests/test_tag_normalize.py — dry-run counts, live merge + image-tag
dedup/repoint, idempotency, same-name-different-fandom and -different-kind kept
separate, ML-known loser keeps a protective alias.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 16:28:34 -04:00
bvandeusen a497104661 feat(maintenance): re-extract archive attachments + link to post — #713 part 2
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Existing PostAttachments that are actually archives (filed opaquely before the
magic-byte gate) need extracting retroactively. cleanup_service.
reextract_archive_attachments scans PostAttachments, magic-detects the archives,
and for each reconstructs the post's sidecar from the DB + re-runs attach_in_place
in a temp dir — so the members extract and re-link to the SAME post via
find_or_create_post (source_id + external_post_id). Idempotent (members dedupe by
sha256). Enqueues thumbnail+ML for new members.

Wired as a maintenance-queue Celery task (tasks/admin) + POST
/api/admin/maintenance/reextract-archives (202) + a "Re-extract archive
attachments" card in Settings → Maintenance.

Test: a zip stored under a mangled extension-less name extracts + links its
member to the post via ImageProvenance, and a second run is a no-op (idempotent).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 14:43:26 -04:00
bvandeusen 96c30eba13 feat(patreon): phase-2 ingester integration — build step 3 (plan #697)
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Branch download_service phase 2 by platform: Patreon now routes to the
native PatreonIngester (zero per-file HEADs, native cursor/resume, loud
drift detection) instead of gallery-dl; the other 5 platforms are
unchanged. The ingester returns a DownloadResult-shaped object so phase 1
(DB setup) and phase 3 (import → pHash → thumbs → ML) are untouched.

Three modes wired from config_overrides state:
  - tick: skip seen (tier-1 ledger + tier-2 disk), early-out after N
    contiguous already-have-it items.
  - backfill: full-history time-boxed chunk, cursor checkpoint via
    gallery-dl-style "Cursor: <token>" lines in stdout (reuses the #693
    lifecycle + parse_last_cursor verbatim).
  - recovery: backfill that BYPASSES the tier-1 seen-ledger so
    dropped-and-deleted near-dups get re-fetched and re-evaluated under
    the current pHash threshold. Rides the #693 state machine via a
    _backfill_bypass_seen flag, cleared on completion / stop.

The seen-ledger uses short-lived sync sessions (injected sessionmaker),
never held across the walk (avoids the connection-reaping trap). Campaign
id resolves from override, an id: URL, or a vanity lookup; unresolvable =
loud NOT_FOUND, never a silent empty success.

Tests: new test_patreon_ingester.py (modes, ledger skip/idempotency,
budget→PARTIAL, recovery bypass, tier-2 disk, drift). The patreon-oriented
download_service tests now drive the ingester branch via a stub; the
gallery-dl campaign-retry test is replaced by resolution/caching coverage.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-05 21:38:42 -04:00
bvandeusen 96fffaff64 feat(download): smarter backfill — time-boxed chunks, run-until-done (backend)
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Plan #693. Large-catalog backfill (Anduo) no longer sprints to the timeout
wall and dies as an error each run. Builds on the cursor checkpoint (#689).

- Time-boxed chunks: BACKFILL_TIMEOUT_SECONDS(1170)→BACKFILL_CHUNK_SECONDS(600),
  far under the 1350 soft limit. Hitting it = normal chunk boundary (the
  TimeoutExpired path already captures partial output + the cursor), not a
  near-wall death.
- Run-until-done state machine driven by config_overrides[_backfill_state]
  (running/complete/stalled). A running backfill auto-continues in chunks
  across ticks until gallery-dl exits cleanly (rc=0 = reached the bottom →
  'complete'); a safety-cap (BACKFILL_MAX_CHUNKS=200) + the #689 stall-guard
  pause a pathological walk as 'stalled'. Replaces the N-runs counter
  (backfill_runs_remaining repurposed as the cap countdown).
- Progress, not error: a chunk that timed out but advanced (cursor moved
  and/or files written) is reclassified TIMEOUT→PARTIAL (status 'ok').
- Retry storm tamed: gallery-dl retries 3→2, downloader timeout 120→60s, so
  one stuck CDN file fails in ~1-2 min not ~10 (Anduo #40838).
- API: POST /sources/{id}/backfill now takes {action: start|stop}; service
  start_backfill/stop_backfill; new enabled sources auto-arm run-until-done;
  source dict exposes backfill_state + backfill_chunks.

Frontend (Start/Stop control + state badge) lands in the next push.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-05 15:02:46 -04:00
bvandeusen 1f4ce8513b style: ruff I001 — keep _sync_engine as-import on its own line (combine-as-imports=false)
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 00:59:26 -04:00
bvandeusen 5a116ca9d0 style: ruff I001 — aliased _sync_session_factory sorts before get_sync_engine
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 00:55:18 -04:00
bvandeusen ef3ee5aceb feat(maintenance): DB maintenance UI card + fix ruff I001
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- Settings → Maintenance gains a "Database maintenance" card: a "Run VACUUM
  ANALYZE now" button (enqueues the maintenance task) plus a per-table bloat
  readout (live/dead/dead%/last vacuum) from /api/admin/maintenance/db-stats.
- dbMaintenance store (loadStats / runVacuum) + test.
- Fix ruff I001: combine the two _sync_engine imports onto one line.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 00:52:36 -04:00
bvandeusen 914033db29 feat(maintenance): scheduled + manual DB VACUUM ANALYZE + bloat readout
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The TABLESAMPLE showcase reads physical blocks (bloat-sensitive), and the
periodic prune/backfill/recovery tasks churn dead tuples faster than
autovacuum always keeps up — so explicit maintenance earns its keep here.

- tasks.maintenance.vacuum_analyze: VACUUM (ANALYZE) over high-churn tables
  (VACUUM_TABLES) on an AUTOCOMMIT connection (VACUUM can't run in a txn).
  Scheduled weekly via Beat; also operator-triggerable.
- _sync_engine.get_sync_engine(): expose the process engine for the
  autocommit connection.
- GET  /api/admin/maintenance/db-stats: per-table n_live/n_dead/dead_pct +
  last (auto)vacuum/analyze from pg_stat_user_tables — visibility, not a
  black box.
- POST /api/admin/maintenance/vacuum: enqueue the task on demand.

Tests: vacuum task runs + reports tables; db-stats shape; trigger queues.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 00:49:39 -04:00
bvandeusen 576e16d14d fix(download): release DB connections across the gallery-dl subprocess
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Backfill events were STILL stranding empty after the timeout-ladder fix.
Worker logs showed the salvage path working ("Download timeout for
anduo/patreon after 1170.0s (18 files written)") but then:
  Retry in 3s: DBAPIError(ConnectionDoesNotExistError: connection was
  closed in the middle of operation)
  ...succeeded in 0.149s   <- in-flight guard no-op

Root cause: DownloadService held the async + sync DB connections checked
out across the entire (≤19.5-min backfill) gallery-dl subprocess. The
server reaps the idle connection, so phase 3's first query hits a dead
socket. That DBAPIError trips download_source's autoretry_for, the retry
re-enters _phase1_setup, sees the event still 'running', returns
in_flight and no-ops — leaving the event to be stranded empty by the
recovery sweep. pool_pre_ping was already on both engines but can't help
a *held* connection (it only validates on pool checkout).

Fix:
- DownloadService.download_source closes the async + sync sessions after
  phase 1, before the subprocess, so phase 3 re-acquires a live
  connection (matches the class's "Phase 2 — no DB connection" docstring).
- The per-task async engine switches to NullPool so phase 3 always opens
  a fresh connection rather than a pooled one the server may have reaped.

Tests: assert connections are released before gdl.download runs and the
event still finalizes; assert the task engine uses NullPool. Also fixes a
stale 1800s->1170s comment.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-03 21:49:52 -04:00
bvandeusen 6590dcdb39 fix(download): salvage soft-time-limit kills + fix timeout ladder
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Backfill downloads stranded with empty logs + a generic "stranded by
recovery sweep" error. Root cause: the backfill gallery-dl subprocess
timeout (1170s) exceeded download_source's Celery soft_time_limit (900s),
so SoftTimeLimitExceeded preempted subprocess.TimeoutExpired. The
TimeoutExpired path (which captures partial stdout/stderr and finalizes
the event) never ran, the event was left 'running', and phase 3 never
decremented backfill_runs_remaining — so the source re-ran and
re-stranded every tick (Anduo #39912).

Two layers:
1. Raise download_source limits (soft 900→1350, hard 1200→1500) so both
   subprocess budgets (870 tick / 1170 backfill) sit below the soft
   limit with phase-3 persist headroom. Promote to module constants and
   guard the invariant with a test.
2. Catch SoftTimeLimitExceeded in download_source and finalize the
   in-flight event with a real reason, mirror phase-3 source-health, and
   decrement backfill so a chronically-slow source self-heals to tick
   mode. The existing celery_signals handler only covered TaskRun, not
   DownloadEvent — that was the gap.

Updates stale 900/1200 references in gallery_dl.py + maintenance.py.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-03 16:56:13 -04:00
bvandeusen e30f50e6fe fix(audit-g3): lifecycle batch — recovery sweeps, retention, timeouts
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Plugs the FC long-running-entity discipline gaps the 2026-06-02 audit
flagged: every entity that can get stuck now has recovery + retention +
timeout, and the long-runners no longer collide with the FC-3i sweep.

Recovery sweeps (every 5 min):
- recover_stalled_backup_runs — flips BackupRun stuck in
  running/restoring past 7h (covers the 6.5h images-backup hard
  limit) to error. prune_backups docstring corrected — the FC-3i
  TaskRun sweep never touched BackupRun rows.
- recover_stalled_library_audit_runs — flips LibraryAuditRun stuck
  past 135 min (10-min buffer above scan_library_for_rule's 2h5m
  hard limit) to error. Previously a SIGKILL'd row blocked all
  future audits until manual DB surgery.
- recover_stalled_import_batches — finalizes ImportBatch rows
  stuck running >2h whose child tasks are all terminal (orphan case
  where the orchestrator crashed before the closing UPDATE). Uses
  the same EXISTS predicate /api/system/stats already had.

Retention (daily):
- prune_library_audit_runs — 30-day window. Audit rows carry
  matched_ids JSONB blobs that can hold tens of thousands of ids.
- prune_import_batches — 30-day window. Cascades to ImportTask via
  the model relationship.

time_limits on five long-runners that previously had none (the
audit's headline finding — every one of these collided with the
recover_stalled_task_runs 5-min default and could be marked
'error' mid-flight):
- scan_directory: 60m soft / 70m hard
- verify_integrity: 60m / 70m
- backfill_phash: 30m / 35m
- apply_allowlist_tags: 30m / 35m
- recompute_centroids: 30m / 35m

QUEUE_STUCK_THRESHOLD_MINUTES now covers maintenance (75) and scan
(75) — above the longest task on each — with per-task overrides
for the outliers (backup_images_task 420, restore_images_task 420,
scan_library_for_rule 130).

start_audit_run guard is now age-aware: a 'running' row older than
the audit hard limit doesn't block a new run (the sweep will catch
it within 5 min). Previously a SIGKILL'd row blocked forever.

/api/import/status now uses the same EXISTS predicate
/api/system/stats does, so the two endpoints no longer disagree on
the active-batch question.

DownloadEvent.started_at resets on pending→running so a freshly-
promoted event from a busy queue isn't measured against its
original enqueue time (was racing recover_stalled_download_events
on heavy-queue days).
2026-06-02 14:30:46 -04:00
bvandeusen 3898ce7be4 fix(audit-g1): six one-liner drift fixes from 2026-06-02 audit
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- BACKFILL_TIMEOUT_SECONDS 1800→1170: keep the subprocess timeout
  30s below Celery's hard time_limit=1200 so SIGKILL doesn't beat
  TimeoutExpired (matched the tick 870s/900s rationale). Backfill
  runs that hit the cap let the next tick continue via the archive.

- recover_interrupted_tasks orphan UPDATE now stamps finished_at;
  without it cleanup_old_tasks' WHERE finished_at<cutoff never
  reaped orphan-swept rows. recover_stalled_task_runs also now sets
  duration_ms (matches celery_signals.finalize's millisecond math).

- ExtensionService.quick_add_source arms NEW_SOURCE_BACKFILL_RUNS=3
  on Source creation, mirroring SourceService.create. Without it,
  Firefox quick-add on a creator with >20 unsynced posts walked the
  full feed until subprocess timeout. Renamed the constant from
  _NEW_SOURCE_BACKFILL_RUNS so it can be imported cross-module.

- gallery_dl.verify() accepts TIER_LIMITED as auth-success alongside
  NO_NEW_CONTENT — the download path (line 712) already does, and
  TIER_LIMITED proves auth reached the post and was told it was
  tier-gated. Verify endpoint previously showed red on this and
  prompted operators to rotate working cookies.

- prune_unused_tags now runs a single DELETE with the NOT-IN
  predicate find_unused_tags uses, instead of SELECT-ids →
  DELETE-WHERE-IN. Removes the psycopg 65535-param cliff that
  would have surfaced on a tag explosion (>65k unused tags).

- credentials.upload() reflects the returned record into the store
  cache (`.set(platform, rec)`) instead of evicting it; previously
  the card briefly rendered "no credential" between upload and
  loadAll().
2026-06-02 11:24:05 -04:00
bvandeusen 9cbdb70e13 fix(thumbnails): surface backfill results + tighten validity check
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Two coupled problems, operator-flagged 2026-06-01: "missing thumbnails
but triggering backfill found nothing."

1. **Backfill UI was a black box.** `POST /api/thumbnails/backfill`
   returned just `{celery_task_id}` and the admin card said
   "Enqueued." with no counts. There was no way to tell whether the
   scan found 0 candidates, 5000 candidates, or whether the worker
   even picked up the task. "Found nothing" was indistinguishable
   from a broken queue.

   Fix: refactor the scan into a sync helper (`_run_backfill_scan`)
   shared by the Celery task and the API endpoint. The API now runs
   the scan in an executor and returns `{scanned, enqueued, ok,
   regenerated}`. The actual thumbnail generation work still goes
   to the thumbnail Celery queue per row via
   `generate_thumbnail.delay()` — the scan itself is fast
   (SELECT id+thumbnail_path + a file.stat() per row).

2. **`_thumb_is_valid` accepted header-only corrupt files.** The
   magic-byte check passed for any 8-byte file starting with a JPEG
   or PNG header, including empty/truncated/zero-pad files that
   browsers render as broken. Backfill counted these as `ok` and
   never regenerated.

   Fix: also require file size ≥ MIN_THUMB_BYTES (256). Real
   thumbnails are minimum ~2KB even on solid-color sources; header-
   only corrupt files top out around 12 bytes. 256 is well above
   the corrupt floor and well below any legitimate thumbnail.

Plus the admin card now shows the per-run counts instead of
"Enqueued.":
  Scanned 5,432 · enqueued 3 (2 regenerated) · 5,429 ok
2026-06-01 21:57:29 -04:00
bvandeusen e35fb1edf7 fix(scan): recovery sweep for stranded download events
The scan tick (scan.py:_tick_due_sources_async) inserts
DownloadEvent(status='pending') and fires download_source.delay(). If the
task dies before finalizing the event — worker OOM/SIGKILL, lost task, or
a gallery-dl that didn't unwind on the 1200s hard time_limit — the event
stays in-flight forever. Every later tick then skips the source via the
in-flight guard (scan.py:168), so Source.last_checked_at is never written
and the operator sees "last check never" in the Subscriptions health
column, permanently.

cleanup_old_download_events only prunes terminal events (by design); no
existing sweep covered the pending/running case. Operator confirmed
2026-05-29 with a diagnostic query: all 43 "never checked" sources were
stranded behind stale in-flight events (eligible_stuck_inflight = 43,
every other bucket zero).

New recover_stalled_download_events task (Beat every 5 min):
- Flips DownloadEvent rows pending/running > 30 min (10 min past the
  download_source 1200s hard kill, so legitimately-running tasks are
  never touched) to status='error' with a sentinel message.
- Bumps each affected Source's consecutive_failures ONCE per source —
  backoff is 2^N on that counter so per-event bumps would needlessly
  inflate the next interval — sets last_error, stamps last_checked_at.

UPDATE...RETURNING source_id avoids a SELECT-then-UPDATE-WHERE-IN that
would hit the psycopg 65535-param ceiling on a large strand pile.

Net: the 43 currently-stranded sources unstick on the first sweep after
deploy, their health dots flip amber instead of unchecked, and the next
scan tick re-queues them.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-29 21:40:52 -04:00
bvandeusen 8649a13118 refactor(I5): remove one-and-done GS/IR migration tooling
The GS/IR migration cutover is complete, so the runbook tooling is dead
weight. Removed:
- services/migrators/ (gs_ingest, ir_ingest, tag_apply, ml_queue, verify,
  cleanup), tasks/migration.py, api/migrate.py (+ blueprint registration)
- MigrationRun model; alembic 0027 drops the migration_run table
- frontend LegacyMigrationCard + migration store (+ MaintenancePanel ref)
- celery include + task route + celery_signals queue mapping for migration.*
- the 1 GB MAX_CONTENT_LENGTH / MAX_FORM_MEMORY override (added solely for
  the ir_ingest upload)
- migration-surface tests (test_api_migrate, test_migration_verify,
  test_ir_ingest, test_gs_ingest, test_tag_apply)

Kept: the alembic schema-migration tests (test_migration_00XX — unrelated)
and cleanup_service.py (the permanent artist-cascade/unlink home).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-29 14:38:59 -04:00
bvandeusen 171c486939 refactor(dry-B2): ImportSettings.load()/load_sync() classmethods for the singleton row
The `select(ImportSettings).where(id == 1)).scalar_one()` singleton load was
repeated 15× across services, API, and 5 task modules. Added async load() +
sync load_sync() classmethods on the model and migrated all 15 full-row sites
(callers already imported ImportSettings, so no new imports; dropped download's
now-orphaned select import). Left maintenance.py's deliberate column-select
(import_scan_path only) as-is.

Rest of the service layer was already adequately DRY — the Record/to_dict
pattern is only 2 instances and the savepoint find-or-create recovery is
correctly per-entity, so neither was forced into a shared abstraction.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-28 14:03:26 -04:00
bvandeusen 21c1b0a81c refactor(dry-B4): extract shared async_session_factory for Celery tasks
download/migration/scan each defined an identical _async_session_factory()
(fresh per-invocation async engine — async connections are event-loop-bound
so each asyncio.run() task needs its own engine, unlike the process-wide
_sync_engine). Moved it to tasks/_async_session.py; the 3 files import it
and drop their now-orphaned sqlalchemy.ext.asyncio / get_config imports
(migration keeps AsyncSession for a type hint). Call-site try/finally
dispose left as-is to avoid re-indenting the critical task bodies.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-28 13:15:04 -04:00
bvandeusen 2358cedf3e feat(dashboards): scheduler health strip, failing-source rollup, 24h activity sparkline, credential staleness nudge
D1 scheduler visibility: AppSetting last-tick stamp on every Beat tick +
GET /api/sources/schedule-status (last_tick_at/next_due_at/due_now/auto_sources)
+ SchedulerStatusBar on the Subscriptions tab (re-polled every 30s).

D2 failing-source rollup: ?failing=true on the sources list + FailingSourcesCard
on Downloads with per-source and bulk "retry" (re-runs the feed via /check).

D3 activity sparkline: GET /api/downloads/activity hourly buckets + CSS bar
chart by the stat chips (failures stacked in error color); refreshes on live poll.

D4 credential staleness: surface last_verified age + "re-verify recommended"
warning past 30d; also fixes the dead last_verified_at field-name mismatch so
the verification row renders at all.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-28 08:30:14 -04:00
bvandeusen dcfe55d731 feat(import-resilience L2): one-shot re-download for corrupt downloaded files
Layer 2 — remediate a corrupt file by re-fetching a fresh copy from its
source, bounded to a single attempt. Operator-requested 2026-05-28.

New backend/app/services/refetch_service.py:
- resolve_refetch_source: parse the failed file's sidecar → platform,
  derive the artist from the import path, find an ENABLED Source with a
  real feed URL for (artist, platform). Returns None for filesystem-only
  imports, missing sidecars, or `sidecar:<platform>:<slug>` synthetic
  anchors (not pollable).
- attempt_refetch: if not already refetched AND a Source resolves,
  delete the corrupt file (so gallery-dl's skip_existing re-fetches it),
  set ImportTask.refetched=True, and trigger ONE download_source
  re-check. Bounded by `refetched` so source-side corruption can't loop.

Wiring:
- Manual endpoint POST /api/import/tasks/<id>/refetch (only on 'failed'
  tasks). Returns refetch_queued / no_source / already_refetched /
  not_found / not_failed.
- Auto path in recover_interrupted_tasks: for each poison-pill row, if
  env FC_AUTO_REFETCH_CORRUPT=1, attempt_refetch (default OFF — the
  manual button is the primary path; auto is opt-in since re-fetch
  deletes a file + re-runs the downloader).
- Frontend: a cloud-refresh icon button on failed rows in ImportTaskList
  → stores.import.refetchTask → toast keyed on the result status.

Filesystem imports with no upstream return no_source — the operator's
only remediation there is replacing the file on disk, surfaced clearly
in the toast.

Tests: 404 unknown task, 400 non-failed task, no_source when
unresolvable, and the full resolvable-source path (file deleted,
refetched flag set, one download_source dispatched, second call is a
no-op). The resolvable test repoints the migration-seeded
import_settings(id=1) scan path rather than inserting a conflicting row.
2026-05-28 00:08:03 -04:00
bvandeusen e3cdd0f92b feat(import-resilience L3): subprocess-isolated probes for video + archive
Layer 3 — prevent the hard worker crash rather than just recovering from
it. The realistic process-crash vectors (operator's observed slow/heavy
tasks) are video decode and archive extraction; images decode in-process
and Pillow raises-and-skips cleanly, and a subprocess per image would
wreck deep-scan throughput, so images are intentionally not probed.

New backend/app/utils/safe_probe.py (leaf module, lazy heavy imports so
the spawned child stays light):

- probe_video(path): validates the container + first video stream via
  ffprobe (a separate binary — a decoder crash kills only ffprobe, not
  the worker). Returns width/height, which the importer didn't capture
  for videos before. crashed=True only on ffprobe timeout.
- probe_archive(path): an uncompressed-size bomb guard
  (MAX_ARCHIVE_UNCOMPRESSED_BYTES = 4 GiB) plus the format integrity
  test (zipfile.testzip / rarfile.testrar / py7zr.test) run in a
  spawned child process. A decompression-bomb OOM or native-lib
  segfault on a malformed archive shows up as a non-zero child exit
  code → crashed=True, never a dead worker.

ProbeResult.crashed distinguishes a HARD failure (subprocess killed /
timed out — the poison-pill signature → caller returns terminal
'failed') from a CLEAN rejection (corrupt-but-handled, bomb cap,
integrity mismatch → caller's choice of skipped/attached).

Wired:
- importer._import_media video branch: probe_video before the pipeline;
  crash → failed, clean reject → invalid_image skip, ok → capture dims.
- importer._import_archive: probe_archive before extract_archive; crash
  → failed, clean reject → still preserve the archive as a
  PostAttachment (matches extract_archive's fail-soft contract).
- ml.tag_and_embed video branch: probe_video before sampling 10 frames,
  so a corrupt video is rejected (status='bad_video') instead of
  crashing the ml-worker on frame decode.

Tests (test_safe_probe.py): valid/corrupt zip via probe_archive, direct
_inspect_archive size+integrity, in-process _archive_probe_target bomb
guard (monkeypatch can't reach a spawned child, so the target is called
directly), and a non-video → ok=False that's robust to ffprobe presence
in CI.
2026-05-28 00:01:32 -04:00
bvandeusen e77afe8295 feat(import-resilience L1): poison-pill circuit breaker — cap stuck-task re-queues
Layer 1 of the import-task resilience work (operator-requested
2026-05-28). The recover_interrupted_tasks sweep re-queues rows stuck
in 'processing' — correct for a worker crash, but without a cap a row
that RELIABLY hard-crashes the worker (OOM/segfault/SIGKILL on a
corrupt or oversized input) loops forever: re-queue → crash → re-queue,
burning a worker slot every 5 min. A caught exception flips to terminal
'failed' and never enters this loop; only process-killing inputs do.

- alembic 0026: import_task.recovery_count (int, default 0) +
  import_task.refetched (bool, default false — backs Layer 2).
- recover_interrupted_tasks now runs a poison-pill UPDATE FIRST: stuck
  rows whose recovery_count has already reached MAX_RECOVERY_ATTEMPTS-1
  are marked 'failed' with a diagnostic ("crashed or stalled the worker
  N times … likely a corrupt or oversized input … inspect/replace the
  file, then retry via /api/import/retry-failed") instead of re-queued.
  The re-queue pass then handles the remaining stuck rows and bumps
  recovery_count. Shared stuck_predicate (and_/or_) keeps the
  media-5min / archive-40min split.
- MAX_RECOVERY_ATTEMPTS=3 (two recoveries then give up).

The failed poison pill surfaces in the existing import-failures view
with its file path, directly answering "help me identify them."

Test test_recover_interrupted_poison_pill_caps_at_max pins both
branches: a row at the cap is failed (not re-enqueued, diagnostic
present), a row one short is re-queued + incremented.
2026-05-27 23:54:35 -04:00