- Add 30s Valkey cache to listScrapingTasks, listAudioJobs, listTranslationJobs
(use listN(500) instead of unbounded listAll to cap at one request)
- Delete listAudioCache() — derive AudioCacheEntry[] from jobs in server load
- Add listBookSlugs() with 10min cache — replaces full listBooks() in translation load
- Add GET /api/admin/audio-jobs, /api/admin/translation-jobs, /api/admin/scrape-tasks
(lightweight polling endpoints backed by the Valkey cache)
- Replace invalidateAll() interval polling in audio+translation pages with
targeted fetch to the new endpoints (avoids re-running full server load)
- LibreTranslate client (chunks on blank lines, ≤4500 chars, 3-goroutine semaphore)
- Runner translation task loop (OTel, heartbeat, MinIO storage)
- PocketBase translation_jobs collection support (create/claim/finish/list)
- Per-chapter language switcher on chapter reader (EN/RU/ID/PT/FR, polls until done)
- Admin /admin/translation page: bulk enqueue form + live-polling jobs table
- New backend routes: POST /api/translation/{slug}/{n}, GET /api/translation/status,
GET /api/translation/{slug}/{n}, GET /api/admin/translation/jobs,
POST /api/admin/translation/bulk
- ListTranslationTasks added to taskqueue.Reader interface + store impl
- All builds and tests pass; svelte-check: 0 errors