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* fix(scanner): reconcile deleted files promptly and honor file_removal_grace Upgraded/replaced media files left dead playable versions until the next full library scan: autoscan file-scope changes for deleted paths failed resolution (ClassifyPath stats the path) and were silently dropped, and scanner.file_removal_grace was dead config — empty_trash_after_scan purged missing-marked rows folder-wide immediately. - Add scantrigger.Resolver.ResolveVanishedPath: maps a vanished video file to a subtree scan of its parent dir, a vanished dir to itself, and an entry directly under a library root to a guarded library scan. Rejects still-existing paths and requires the matched library root to exist on disk so an unmounted share never triggers reconciliation. - Autoscan falls back to it for file-scope and legacy parent-dir changes that fail with a RequestError, closing the dead-version window from ~24h (daily full scan) to roughly one poll interval. - DeleteMissingByFolder now takes the removal grace and only deletes rows missing longer than it (default 24h, restart-required setting); missing rows are already hidden from every client surface, so the grace only preserves per-file state (probe/match/markers) in case the file returns. Remove the uncalled DeleteMissing sweeper. Part of #311 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(scanner): only treat ENOENT as a vanished path in ResolveVanishedPath Permission or other stat failures must not reconcile still-existing files as missing; reject them with a RequestError instead. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * refactor(scanner): address PR 312 review nitpicks - Extract shared matchEnabledFolder/normalizeTrigger helpers so ResolveMissingSubtree and ResolveVanishedPath cannot drift. - Warn when a negative scanner.file_removal_grace is clamped to 0. - Add disabled-library test for ResolveVanishedPath. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>