The monitor's quality-upgrade path was inert: run_pipeline's intake
short-circuit treated any existing LibraryItem as "done", so a
monitor-driven upgrade job for a below-cutoff copy jumped straight to
imported without downloading. Intake now checks whether the job is
monitor-driven (Request.monitoredReleaseId IS NOT NULL) and, if so,
only short-circuits when the existing copy already meets the quality
cutoff; plain manual requests keep exact slice-1 behavior. Also drops
an unused `field` import in browser.py.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Wrap each adapter's search() call in the match stage in try/except so
a down source (dead slskd, Qobuz auth error, etc.) contributes no
candidates instead of crashing run_pipeline and killing the worker.