Felix Förtsch
50d3e50280
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Two bugs compounded: 1. extractOriginalLanguage() in jellyfin.ts picked the FIRST audio stream's language and called it 'original'. Files sourced from non-English regions often have a local dub as track 0, so 8 Mile with a Turkish dub first got labelled Turkish. 2. scan.ts promoted any single-source answer to confidence='high' — even the pure Jellyfin guess, as long as no second source (Radarr/Sonarr) contradicted it. Jellyfin's dub-magnet guess should never be green. Fixes: - extractOriginalLanguage now prefers the IsDefault audio track and skips tracks whose title shouts 'dub' / 'commentary' / 'director'. Still a heuristic, but much less wrong. Fallback to the first track when every candidate looks like a dub so we have *something* to flag. - scan.ts: high confidence requires an authoritative source (Radarr/Sonarr) with no conflict. A Jellyfin-only answer is always low confidence AND gets needs_review=1 so it surfaces in the pipeline for manual override. - Data migration (idempotent): downgrade existing plans backed only by the Jellyfin heuristic to low confidence and mark needs_review=1, so users don't have to rescan to benefit. - New server/services/__tests__/jellyfin.test.ts covers the default-track preference and dub-skip behavior.