feat(mobile-fixes-phase4): Complete US-407 - Fix Editare Bonuri cu Eroare

Implemented by Ralph autonomous loop.
Iteration: 7

Co-Authored-By: Claude <noreply@anthropic.com>

backend/modules/data_entry/db/crud/receipt.py

@@ -265,7 +265,12 @@ class ReceiptCRUD:
         receipt: Receipt,
         data: ReceiptUpdate,
     ) -> Receipt:
-        """Update receipt fields."""
+        """Update receipt fields.
+
+        US-407: When a receipt is manually updated, reset processing_status and
+        processing_error to NULL. This allows failed OCR receipts to be corrected
+        manually and then submitted for approval without showing as "error" status.
+        """
         update_data = data.model_dump(exclude_unset=True)
 
         # Recalculate tva_total from tva_breakdown if breakdown is being updated
@@ -285,6 +290,12 @@ class ReceiptCRUD:
         for field, value in update_data.items():
             setattr(receipt, field, value)
 
+        # US-407: Reset processing status when receipt is manually edited
+        # This clears the "failed" status so edited receipts can be submitted for approval
+        if receipt.processing_status == 'failed':
+            receipt.processing_status = None
+            receipt.processing_error = None
+
         receipt.updated_at = datetime.utcnow()
 
         session.add(receipt)