feat(search): configurable automatic-search interval, per-book delay, title-only fallback#714
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… title-only fallback The automatic-search sweep ran on a hardcoded 6h cadence with no throttle. Add three ApplicationSettings, read each sweep so changes take effect without a restart: - AutomaticSearchIntervalHours (default 24, clamped [1,168]) — sweep cadence; also gates the "not searched since" cutoff so a book isn't re-searched more often than this. - AutomaticSearchBookDelaySeconds (default 5, clamped [0,300]) — delay between per-book searches so a large wanted list doesn't hammer the indexers. Manual search is untouched. - AutomaticSearchTitleOnlyFallback (default true) — when the full "Title Author Series" query finds nothing, retry with a title-only query (opt-out on the background sweep). Migration adds the columns with those defaults so the existing settings row is correct. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
The automatic-search background sweep ran on a hardcoded 6-hour cadence and searched every wanted book back-to-back with no throttle. On a large wanted list that hammers the indexers (and a shared Prowlarr). This adds three
ApplicationSettings, read fresh each sweep so changes take effect without a restart:AutomaticSearchIntervalHours(default 24, clamped[1,168]) — sweep cadence, via the service'sintervalProvider. Also drives the "not searched since" cutoff so a book isn't re-searched more often than the configured interval.AutomaticSearchBookDelaySeconds(default 5, clamped[0,300]) — delay between per-book searches during the sweep.0disables it. Manual "Search now" is unaffected.AutomaticSearchTitleOnlyFallback(default true) — when the fullTitle Author Seriesquery returns nothing, retry once with a title-only query to catch loosely-named releases. Doubles indexer queries for unfound books, so it's opt-out on the background sweep.Changes
ApplicationSettings: 3 new properties + migrationAddAutomaticSearchTuning(column defaults 24/5/true so the existing singleton row is correct) + snapshot.AutomaticSearchService: interval now read from settings each cycle (GetSearchInterval, clamped, 24h fallback on error).AutomaticSearchProcessor: reads the settings, applies the per-book delay in the sweep loop, and the interval-aware cutoff.ProcessAudiobookAsync+AutomaticSearchResultClassifier.BuildTitleOnlySearchQuery: the title-only fallback retry.Testing
dotnet buildclean (0 warnings/0 errors); full suite green (1015 passed), including the migration/model-snapshot integration tests.🤖 Generated with Claude Code