Fixes 71 violations across production and test code:
- B904 (~50): raise-from in except blocks; from None at API/view
boundaries, from exc where the cause is the direct origin
- B017 (9): pytest.raises(Exception) → specific type or match= arg
- B007 (5): unused loop vars renamed to _
- B027 (1): missing @abstractmethod on DateParserPluginBase.__exit__
- B028 (3): warnings.warn without stacklevel=2 in test utils
- B011 (1): assert False → raise AssertionError()
- B905 (3): zip() without strict=False
- B009 (3): getattr with constant string (auto-fixed)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implements and tests a retry with backoff + jitter for aquring the index update lock. If we still can't get it, dispatch a celery task to handle it later instead (also with retry)
Signed-off-by: stumpylog <797416+stumpylog@users.noreply.github.com>
stumpylog
shamoon