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/sync_service.py

@@ -237,6 +237,31 @@ class SyncService:
 
         return synced, errors
 
+    @staticmethod
+    def _get_fiscal_code_variants(fiscal_code: str) -> list:
+        """
+        Generate all possible variants of a Romanian fiscal code (CUI).
+        Database may store: "22891860", "RO22891860", "RO 22891860"
+        OCR may extract: "RO22891860" or "22891860"
+        """
+        import re
+        # Extract just the digits
+        digits = re.sub(r'[^0-9]', '', fiscal_code)
+        if not digits:
+            return [fiscal_code]
+
+        # Generate all variants
+        variants = [
+            digits,                # Just digits: 22891860
+            f"RO{digits}",         # With RO prefix: RO22891860
+            f"RO {digits}",        # With RO prefix and space: RO 22891860
+        ]
+        # Also add the original if different
+        if fiscal_code not in variants:
+            variants.append(fiscal_code)
+
+        return variants
+
     @staticmethod
     async def search_supplier(
         session: AsyncSession,
@@ -251,9 +276,11 @@ class SyncService:
         """
         # 1. Search in synced suppliers
         if fiscal_code:
+            # Search all variants of the fiscal code (with/without RO, with/without space)
+            variants = SyncService._get_fiscal_code_variants(fiscal_code)
             stmt = select(SyncedSupplier).where(
                 SyncedSupplier.company_id == company_id,
-                SyncedSupplier.fiscal_code == fiscal_code
+                SyncedSupplier.fiscal_code.in_(variants)
             )
         elif name:
             stmt = select(SyncedSupplier).where(
@@ -276,9 +303,11 @@ class SyncService:
 
         # 2. Search in local suppliers
         if fiscal_code:
+            # Search all variants of the fiscal code (with/without RO, with/without space)
+            variants = SyncService._get_fiscal_code_variants(fiscal_code)
             stmt = select(LocalSupplier).where(
                 LocalSupplier.company_id == company_id,
-                LocalSupplier.fiscal_code == fiscal_code
+                LocalSupplier.fiscal_code.in_(variants)
             )
         elif name:
             stmt = select(LocalSupplier).where(