- Wrap runOne(subscription) in try/catch to ensure one subscription failure doesn't block remaining subscriptions
- Log failed subscriptions with new 'cashbox_export_subscription_run_fail' event
- Add new LOGEVENT type for subscription run failures
- Add test to verify second subscription processes even when first fails (continues processing independently)
- All 7 tests passing: 6 original + 1 new failure handling test
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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