[Feature] keep filename and checksum in the asset deletion audit (tombstone)

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request. • Yes The feature - keep filename and checksum in the asset deletion audit (tombstone) Summary When an asset is permanently deleted, Immich keeps only a minimal tombstone in asset_audit (id, assetId, ownerId, deletedAt) plus album_asset_audit (albumId, assetId, deletedAt). All identifying metadata is removed: originalFileName, checksum (SHA1), originalPath, type. As a result it is impossible to reconstruct *what* was deleted — only that something was removed, when, and from which album. Motivation / use case Self-hosters who curate their library (duplicate review, album pruning, bulk delete) need a durable audit trail: • know exactly which files were removed (filename) and their content checksum; • cross-check against backups / other copies and confirm nothing was lost by accident; • verify provenance/integrity after the f…