John O'Keefe
795225f097
Release / build-and-push (push) Successful in 3m5s
The archive pass looped over the scan's folders and, inside each
iteration, compared the ENTIRE library's item list against that one
folder's walk. With two registered folders every item living under the
other folder was flagged "missing (1/2)" on every reconciling scan —
prod's audiobook library (the only multi-folder one) showed 743/743
flagged — and nothing reached the two-consecutive-miss threshold only
because each scan's walk clears missing_scan_count before the pass
re-flags it. With three or more folders the defect stops bouncing: a
later iteration sees an earlier iteration's count-1 marks on items its
own walk lacks and archives them mid-pass — one registered folder away
from archiving a third of a library per scan. Single-folder libraries
were unaffected, which is why comics/ebooks/manga showed zero flags.
Folder-book presence was suspected alongside it (audioBookRoots read
during the comparison), but the map is written for every >=2-track
folder-book root on every walk (processAudioBookFile, since 6216bd9b);
the flagged folder-books were victims of the same cross-folder
comparison. The roots attribution did carry the same unchecked
strings.HasPrefix boundary bug as the rest of the scanner (8th site,
variable named `root`, missed by the earlier sweep); it now uses
folderContains.
The pass now groups folders by owning library and, per library,
compares ListMediaItemsByLibraryIncludingArchived against the UNION of
all that library's folders' walks. The coverage (partial-scope) guard,
the walk-failure skip, and the mark/archive/purge item loop are
unchanged.
Regression test (archive_multifolder_test.go) builds a two-folder
audiobooks library — single-file book in one folder, folder-of-tracks
book in the other — and scans twice: pre-fix both items are flagged
missing on both scans (verified by running the test against the old
code), post-fix neither is ever flagged or archived.