Diagnostics revealed the real cause: the tracks table stores file_path
RELATIVE to the library root (e.g. "Asketa/Another Side/01-01 - Another
Side.flac"), so probing the raw path failed for the entire library — every
track came back unprobeable and was left unflagged ("20/20 could not be
probed").
The scanner now resolves each path via _resolve_library_file_path (checks
transfer/download/library dirs, same helper the rest of the app uses) before
probing, falling back to docker_resolve_path. Injected via deps for testability.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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