feat: Add multiple TVA entries support for Romanian receipts

- Add TvaEntry schema supporting multiple TVA rates (A, B, C, D codes)
- Update OCR extractor to extract multiple TVA entries from receipts
- Support both old (19%, 9%, 5%) and new Romanian rates (21%, 11% from Aug 2025)
- Add tva_breakdown, tva_total, items_count, vendor_address to Receipt model
- Update OCRPreview.vue to display TVA entries with rate badges
- Add "Detalii Suplimentare" section in ReceiptCreateView with editable TVA table
- Add TVA breakdown display in ReceiptDetailView
- Create database migration for new TVA columns

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

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

data-entry-app/backend/app/routers/ocr.py

@@ -11,7 +11,7 @@ from app.db.database import get_session
 from app.db.crud.attachment import AttachmentCRUD
 from app.services.ocr_service import ocr_service
 from app.services.ocr_engine import OCREngine
-from app.schemas.ocr import OCRResponse, OCRStatusResponse, ExtractionData
+from app.schemas.ocr import OCRResponse, OCRStatusResponse, ExtractionData, TvaEntry
 
 router = APIRouter()
 
@@ -78,6 +78,12 @@ async def extract_from_image(file: UploadFile = File(...)):
             raise HTTPException(status_code=422, detail=message)
 
         # Convert ExtractionResult to ExtractionData schema
+        # Convert tva_entries from dict to TvaEntry objects
+        tva_entries_schema = [
+            TvaEntry(code=e.get('code'), percent=e['percent'], amount=e['amount'])
+            for e in result.tva_entries
+        ] if result.tva_entries else []
+
         data = ExtractionData(
             receipt_type=result.receipt_type,
             receipt_number=result.receipt_number,
@@ -87,6 +93,10 @@ async def extract_from_image(file: UploadFile = File(...)):
             partner_name=result.partner_name,
             cui=result.cui,
             description=result.description,
+            tva_entries=tva_entries_schema,
+            tva_total=result.tva_total,
+            address=result.address,
+            items_count=result.items_count,
             confidence_amount=result.confidence_amount,
             confidence_date=result.confidence_date,
             confidence_vendor=result.confidence_vendor,
@@ -137,6 +147,12 @@ async def extract_from_attachment(
         raise HTTPException(status_code=422, detail=message)
 
     # Convert ExtractionResult to ExtractionData schema
+    # Convert tva_entries from dict to TvaEntry objects
+    tva_entries_schema = [
+        TvaEntry(code=e.get('code'), percent=e['percent'], amount=e['amount'])
+        for e in result.tva_entries
+    ] if result.tva_entries else []
+
     data = ExtractionData(
         receipt_type=result.receipt_type,
         receipt_number=result.receipt_number,
@@ -146,6 +162,10 @@ async def extract_from_attachment(
         partner_name=result.partner_name,
         cui=result.cui,
         description=result.description,
+        tva_entries=tva_entries_schema,
+        tva_total=result.tva_total,
+        address=result.address,
+        items_count=result.items_count,
         confidence_amount=result.confidence_amount,
         confidence_date=result.confidence_date,
         confidence_vendor=result.confidence_vendor,