• Series episodes are reconciled by air date and folded title, not just episode number, so a provider that renumbers, reorders, or merges a two-part episode no longer reports owned episodes as missing.
• Each reachable provider's episode list is merged per season in the library's metadata-fetcher order: the top provider owns each season it lists, a lower one can add a season none above it has but not override a covered one, and the library's own missing episodes are the last-chance fallback, so a stale or wrong season no longer reports every episode as missing.
• Series cross-checks follow the library's configured metadata fetchers (TheMovieDb, TheTVDB, TVmaze) instead of separate plugin toggles; the per-provider checkboxes are gone (TheTVDB still needs its key).
• Re-check a single series for missing episodes from the report, without a full rescan.
• The identification audit and per-gap Diagnose now cover music albums and books, not just movies and shows.
• Bigger row titles and collapsible per-source sections in the dashboard.