Added verification step before deleting orphaned jobs:
- New GET endpoint /settings/jobs/orphaned to preview the list
- Shows detailed table with job name, backup software/type, customer ID,
run count, and email count
- "Preview orphaned jobs" button on maintenance page
- Delete button on preview page shows exact count
- Summary shows total jobs, runs, and emails to be deleted
This allows admins to verify which jobs will be deleted before
taking the destructive action.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>