fix(sonarr): use configured metadata provider for season filtering

[fallenbagel]

Description

The Sonarr scanner was always using TMDB as the source of truth for season data when checking availability, even when the metadata provider was set to TVDB. This caused incorrect availability statuses for shows where TMDB and TVDB have different season structures. For example, Animaniacs is split into two separate series on TMDB (5 seasons + 3 seasons) but combined into a single 8-season series on TVDB. The scanner would see all 5 TMDB seasons as available and mark the show as fully available, which blocked users from requesting the remaining seasons via "Request More."

This adds the same metadata provider resolution that the Jellyfin/emby and Plex scanners already use, so the Sonarr scanner now respects the configured provider when filtering seasons.

• Fixes Enable Scanner to use TVDB for Availability #2466

How Has This Been Tested?

This can be tested using the image tag preview-fix-sonarr-scanner-metadata-provider

Screenshots / Logs (if applicable)

Checklist:

• I have read and followed the contribution guidelines.
• Disclosed any use of AI (see our policy)
• I have updated the documentation accordingly.
• All new and existing tests passed.
• Successful build pnpm build
• Translation keys pnpm i18n:extract
• Database migration (if required)

Summary by CodeRabbit

• Bug Fixes
  • Better metadata handling for TV show libraries: the app now detects anime and uses the appropriate metadata source, reducing incorrect or missing show details.
  • TV show data is now refreshed when using alternate metadata sources so library entries display accurate, up-to-date information.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📝 Walkthrough

Walkthrough

The Sonarr scanner now selects a metadata provider based on tvShow keywords (anime vs. tv). If the chosen provider is not TheMovieDb, the scanner refetches tvShow data from that provider before continuing processing.

Changes

Cohort / File(s)	Summary
Sonarr Scanner Metadata Provider Selection server/lib/scanners/sonarr/index.ts	Added imports for metadata providers and types. Implements dynamic metadata provider selection using ANIME_KEYWORD_ID; when provider !== TheMovieDb, refetches tvShow via metadataProvider.getTvShow({ tvId }) before continuing processing.

Sequence Diagram(s)

sequenceDiagram
    participant Sonarr as Sonarr Scanner
    participant MP as MetadataProvider Selector
    participant Provider as Metadata Provider
    participant TMDB as TheMovieDb (optional)

    Sonarr->>MP: Inspect tvShow keywords
    MP-->>Sonarr: Return provider ("anime" or "tv")
    Sonarr->>Provider: if provider !== TheMovieDb then getTvShow(tvId)
    Provider-->>Sonarr: Return enriched tvShow
    Sonarr->>Sonarr: Continue existing Sonarr processing with updated tvShow

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 I sniff the keywords, hop and see,
Anime or TV — which will it be?
I fetch new data when providers stray,
A tidy scanner hops on its way. 🥕✨

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: using configured metadata provider for season filtering in Sonarr scanner.
Linked Issues check	✅ Passed	The changes implement dynamic metadata provider selection based on anime keywords and fetching updated data, directly addressing issue #2466's requirement to respect configured metadata providers.
Out of Scope Changes check	✅ Passed	All changes are focused on implementing metadata provider resolution in the Sonarr scanner, directly aligned with the PR objectives and issue #2466.

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[Copilot]

Pull request overview

This PR fixes a bug in the Sonarr scanner where it always used TMDB as the source of truth for season data, even when the metadata provider was configured to use TVDB. This caused incorrect availability statuses for shows with different season structures between TMDB and TVDB (e.g., Animaniacs).

Changes:

• Added metadata provider resolution to the Sonarr scanner to respect the configured provider (TVDB or TMDB) when filtering seasons
• Imported necessary dependencies for metadata provider detection (getMetadataProvider, TheMovieDb, ANIME_KEYWORD_ID, TmdbKeyword)
• Implemented the same pattern used by Plex and Jellyfin scanners to detect anime shows and select the appropriate metadata provider

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