Matt bb9b5bb1a3 fix(audit-wave-1): orphan-blob window in handleDocumentCompleted
Closes Wave 1.3 (CRITICAL). The previous storage.put → files.insert
→ documents.update sequence had two real failure modes:

1. **Orphan blob.** If storage.put succeeded but the files.insert or
   documents.update failed, the blob lived forever in MinIO with no
   DB pointer. Re-runs re-uploaded a new blob without cleaning up
   the previous one.

2. **Zombie completed state.** The catch block at the end ran
   `documents.update({status: 'completed'})` with NO signedFileId
   on any failure path. The idempotency early-return at the top
   requires BOTH status='completed' AND signedFileId, so retries
   *did* still re-attempt — but reps saw a "completed" document
   with no signed file, hiding the failure.

Fix:
- Track `putStoragePath` outside the try. After storage.put lands,
  the variable holds the path; cleared once the DB commit succeeds.
- files.insert + documents.update + reservation contract mirror all
  run in a single `db.transaction(...)`. Atomic commit-or-rollback.
- Catch block: compensating `storage.delete(putStoragePath)` if the
  DB commit didn't land. Logs at error level on compensating-delete
  failure so a human can clean up.
- Catch block no longer sets `status='completed'`. The doc stays
  in its prior state; Documenso's retry (or our poll-worker) re-
  attempts the full sequence safely thanks to the unchanged
  idempotency gate.

Verified: tsc clean, documents-completion-auto-deposit tests all
pass (5/5).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 00:07:08 +02:00
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