- Remove the no-op Worker BackgroundService and its registration; the process
is kept alive and does its work through the MassTransit bus and the upload
intent jobs (their own hosted services)
- Fix the gateway middleware guard to reject on string.IsNullOrEmpty(prefix)
instead of 'is null', which no longer matched TicketValidator returning
string.Empty for invalid tickets (invalid tickets skipped the 401 and an
empty object key could slip through)
Build: 0 warnings, 0 errors.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>