Migrate paths in 250-track pages and retain unchanged aliases to reduce memory use and index rewrites. Cover large libraries and atomic upgrade rollback with regression tests.
Refs #640
Keep format choices available independently of loaded pages, match codec and extension aliases, and add a filter for indexed ReplayGain tags. Preserve source, quality, search, paging, and existing missing-ReplayGain behavior.
Validation: 13 targeted database and widget tests; Flutter localization generation and targeted analysis.
Coalesce repository startup and retry a failed owner initialization before changing the registry URL. Keep the original startup error and avoid rollback calls when initialization never succeeded.
Validation: 56 targeted Flutter tests passed (2 optional skips), analyzer clean; two Android profile integration cases verified unreadable extensions remain visible, the repository initializes, and encrypted settings reopen with their original key.
Disable automatic deletion across clients sharing Android secure storage and enable protected migration. Reject replacement keys when encrypted settings exist or the saved key is malformed. Surface preparation failures through extension state and preserve retry behavior.
Validation: targeted Flutter tests, analyzer and Android secure-storage compatibility test passed. The original device key-loss trigger is not established.
Export, import, and split legacy history backups in Rust while preserving schema 15, all history columns, path keys, and atomic restore behavior. Keep provider refresh and pending history edits intact.
Move full and incremental ingestion, source snapshots, path keys, and download exclusion to native transactions. Preserve schema 17, FTS, WAL coordination, cancellation, and Android SAF timestamp backfill.
Move playlist parsing and serialization off the UI isolate, preserving field mapping, identifiers, durations, and export entries. Extend the shared parser contract tests with playlist fixtures.
zarzet