Part 2 of the faceted plan, Phase 5 (steps 5-6): the scan that used to
print ~4 lines per unchanged file now prints ONE summary line, and a
poll tick landing mid-scan no longer stacks a second full scan.
- Quiet scans (§4): the walk loop is silent — inserts, changes, and
errors log inside processMediaFile; the duplicate
'Successfully processed' branch (both branches printed it) and the
per-file 'processing / already exists / same size, skipping' chatter
are gone. Summary carries the trigger and a changed counter:
'Scan of <folders> (trigger: poll): N files, N changed, N new, Xs,
N errors'. Triggers threaded through every enqueue site: poll
(startBackupScan), watcher (dirty-dirs flush), admin (scan API),
initial (startup scan).
- Enqueue coalescing (§5): Worker.HasActiveScanForLibrary (JobResult
gains additive job_type so only SCAN jobs coalesce — an import
sharing the library id never blocks one). enqueueLibraryScan skips
silently; the admin scan API answers 409 with the active job id.
Enforces the one-scan-per-library invariant the bulk scan-state map
leans on.
- Watcher capability probe (§4): ONE Add on a root folder; failure
disables the watcher with a single startup line (replaces the
per-directory warning spam on inotify-broken deployments). The
watcher stays an optional latency reducer over scheduled scans.
- Per-directory sibling cache (§6): hasSiblingBookFileCached caches
the ReadDir per directory for one scan — loose-image manga re-stats
thousands of images sharing a handful of directories.
Tests: TestHasActiveScanForLibrary (unit — running/pending coalesce,
terminal jobs don't, non-scan jobs don't, empty library never, nil
worker safe). Full scanner suite green in the container.
John O'Keefe
5245f292ca