Persist and apply customSearchTerms across ebook workflows and searches. Updated admin search-terms PATCH to enqueue addSearchEbookJob for ebook requests. Included customSearchTerms when creating ebook request records in audiobooks/[asin]/fetch-ebook, audiobooks/[asin]/select-ebook and requests/[id]/fetch-ebook. Reworked requests/[id]/select-ebook to handle being passed either an audiobook or ebook request (resolve parent audiobook, reuse existing ebook request if present) and to propagate parent.customSearchTerms when creating new ebook requests. Modified search-ebook.processor to read customSearchTerms from the request record, use it as the effective search title (with logging), and pass the modified audiobook title into Anna's Archive and indexer searches so custom terms are honored.
Add support for per-request custom search terms and an admin retry-download flow.
- DB/schema: add custom_search_terms column via Prisma migration and schema update.
- Admin UI: new AdjustSearchTermsModal component and UI badges to show custom search status; RequestActionsDropdown and RecentRequestsTable updated to surface adjust/retry actions.
- API: new PATCH /api/admin/requests/[id]/search-terms to set/clear custom terms (optionally trigger a new search) and new POST /api/admin/requests/[id]/retry-download to resume monitoring or re-add downloads using DownloadHistory metadata.
- Behavior: interactive search now prefers customSearchTerms when present; manual import exposes cleanupSource option to organize job; admin requests listing returns downloadAttempts and customSearchTerms.
- UX: add SectionToolbar, LoadMoreBar and HideAvailableToggle components and wire hide-available preference across home, search, author and series pages; authors/series endpoints/page handlers gain pagination metadata.
- Misc: add connection-errors util and update related processors/services and tests to cover the new flows.
These changes enable admins to override search terms per request, trigger searches from the admin UI, and retry failed downloads more robustly.