fix(ocr): Improve CUI matching and vendor name extraction

- Add CUI variant matching for Romanian fiscal codes (handles "RO22891860",
  "RO 22891860", and "22891860" formats) in both sync_service and validation
- Fix vendor name extraction to properly handle "SC." prefix (Societate
  Comercială) vs "SC" as staircase in addresses
- Remove problematic TVA pattern that was incorrectly matching percentage values
- Add docTR Plus engine option to dropdown with "(recomandat)" label

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/modules/data_entry/services/ocr/validation.py

@@ -1129,14 +1129,21 @@ class OCRValidationEngine:
         # Helper to search database for CUI
         async def lookup_cui_in_db(digits: str) -> Optional[tuple[str, str]]:
             """Search both synced and local suppliers for CUI."""
-            # Search patterns: with and without RO prefix
-            search_patterns = [digits, f"RO{digits}"]
+            # Search patterns: with and without RO prefix, with and without space
+            # Database may have: "22891860", "RO22891860", "RO 22891860"
+            search_patterns = [
+                digits,                    # Just digits: 22891860
+                f"RO{digits}",             # With RO prefix: RO22891860
+                f"RO {digits}",            # With RO prefix and space: RO 22891860
+                digits.lstrip('0'),        # Handle leading zeros
+            ]
 
             # Search synced_suppliers first (more data)
             stmt = select(SyncedSupplier.fiscal_code, SyncedSupplier.name).where(
                 or_(
                     SyncedSupplier.fiscal_code == digits,
                     SyncedSupplier.fiscal_code == f"RO{digits}",
+                    SyncedSupplier.fiscal_code == f"RO {digits}",  # With space
                     SyncedSupplier.fiscal_code == digits.lstrip('0'),  # Handle leading zeros
                 )
             ).limit(1)
@@ -1150,6 +1157,7 @@ class OCRValidationEngine:
                 or_(
                     LocalSupplier.fiscal_code == digits,
                     LocalSupplier.fiscal_code == f"RO{digits}",
+                    LocalSupplier.fiscal_code == f"RO {digits}",  # With space
                     LocalSupplier.fiscal_code == digits.lstrip('0'),
                 )
             ).limit(1)