macstainless: a Plex-on-macOS user running SoulSync in Docker had all 5,250
tracks flagged "dead" even though the files exist and play in Plex. Root cause:
the DB stores paths as Plex reported them (/Volumes/Core/Music/...), which don't
exist inside SoulSync's container. resolve_library_file_path() returns None for
"couldn't find it at any known base dir" — and for a mis-mounted library that's
EVERY track, not a deletion. The job treated None as "file deleted" and created
a finding per track.
Fix mirrors the existing transfer-folder abort: collect unresolvable tracks, and
if at least max_unresolved_fraction (default 0.5) of the library is unresolvable
once it's past min_tracks_for_guard (default 25), treat it as a path-mapping/
mount problem — abort with an actionable message (Docker mount / Settings →
Library → Music Paths) and create ZERO findings. A small fraction unresolvable
is still reported as genuine dead files, and tiny libraries (< min) report as
before. Both thresholds are configurable per the job's settings.
Tests: mass-unresolvable aborts with no findings; a lone dead file among real
ones is still reported; a small all-dead library still reports; thresholds
configurable. 54 repair tests pass.
