Enqueue resource_events jobs for all issues/MRs after discussion sync,
then drain the queue by fetching state/label/milestone events from GitLab
API and storing them via transaction-based wrappers. Adds progress events,
count tracking through orchestrator->ingest->sync result chain, and
respects fetch_resource_events config flag. Includes clippy fixes across
codebase from parallel agent work.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>