[celery] Queue-based task prioritization (672c81bf)

PROJECT.org

@@ -18,7 +18,7 @@ tasks, Todoist tasks, web pages I've read and trails I've hiked has turned out
 to be sometimes cathartic and sometimes functional as I try to remember when I
 did a thing.
 
-* Backlog [0/24] :vrobbler:project:personal:
+* Backlog [2/26] :vrobbler:project:personal:
 ** TODO [#C] After transition to linux add curl_cffi as webpage scrapper again :webpages:metadata:
 :PROPERTIES:
 :ID:       d3cce1a7-d540-4d66-bf66-e75378e4eac7
@@ -556,4 +556,32 @@ Added a `workouts` Django app so we can scrobble gym sessions.
 - Templates, admin, DRF viewsets (`exercises`, `workout-routines`), MCP tools,
   and `tests/workouts_tests/` (unit conversion, form round-trips, importer,
   imperial POST) included.
+** DONE [#A] Fix celery task prioritization especially for agent sessions :celery:tasks:agents:
+:PROPERTIES:
+:ID:       672c81bf-bba9-a963-e8ac-52246d976cea
+:END:
 
+*** Description
+
+Split Celery work into four queues so time-sensitive tasks run fast even when
+long batch jobs are queued up:
+
+- `priority` — interactive/user-facing tasks (agent session prompts, Mopidy
+  queue/playlist adds, favorite toggles, reverse geocoding) get a dedicated
+  high-concurrency worker with `--prefetch-multiplier=1`.
+- `charts` — per-scrobble chart updates stay on their own queue, no longer
+  blocked by scheduled chart rebuilds.
+- `background` — heavy/scheduled jobs (db backup, trends, sentiment backfill,
+  chart rebuilds, historical imports, twitch VOD check) run on a dedicated
+  low-concurrency worker so they can't starve the others.
+- `default` — everything else (imports, notifications, archivebox, expansions).
+
+Also set `CELERY_TASK_DEFAULT_QUEUE = "default"` — previously un-routed tasks
+were published to Celery's default `celery` queue, which no worker consumed.
+New rc.d scripts `vrobbler_celery_priority` and `vrobbler_celery_background`
+added alongside the existing `vrobbler_celery` (now `default,charts`).
+
+** DONE [#A] Fix lastfm rate limiting dropping scrobbles :importers:scrobbles:lastfm:
+:PROPERTIES:
+:ID:       e6718364-8f9e-d156-3a79-2e89b2ac697b
+:END: