When a provider delivers a lossy/unknown stream, the native finalizer
preserved the container but kept the requested .flac name, so every
metadata/ReplayGain write treated the file as FLAC and failed with
"failed to write FLAC metadata: failed to parse FLAC file: fLaC head
incorrect" — on the first download, on every retry (the file is never
deleted from public storage), on every manual edit attempt, and the
history backfill re-probed the same file on every app launch forever.
- Finalizer now renames a preserved lossy/unknown container away from
its .flac name to match the real content (aac/MP4 -> .m4a, mp3, opus),
mirroring the Dart pipeline, so the correct tag writer is picked
- EditFileMetadata sniffs MP4 content before taking the .flac branch
and reports what is actually wrong (rename to .m4a) instead of the
cryptic parse error
- The history audio-metadata backfill remembers paths whose probe
failed permanently (unparseable content) and stops reselecting them
on every launch; transient failures (missing file, unmounted volume)
still retry
zarzet
364b2aa138