feat: Add payment methods extraction, OCR improvements, and AutoComplete fix

Backend:
- Add payment_methods and payment_mode fields to Receipt model
- Add payment method extraction (CARD/NUMERAR) with auto-suggestion logic
- Improve OCR service with TVA validation and reverse calculation
- Fix nomenclature service supplier limit (was 50, now unlimited)
- Add OCR fields migrations (ocr_raw_text, ocr_confidence, payment_mode)

Frontend:
- Fix AutoComplete to properly display supplier name after OCR
- Add payment methods display in OCR preview with suggested payment mode
- Improve ReceiptCreateView form handling and OCR data application

Database migrations:
- 20251215_add_ocr_fields_to_receipt.py
- 20251215_remove_partner_id.py
- 20251216_add_payment_mode.py

🤖 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, TvaEntry
+from app.schemas.ocr import OCRResponse, OCRStatusResponse, ExtractionData, TvaEntry, PaymentMethod
 
 # Auth integration (will be protected by middleware)
 from auth.dependencies import get_current_user
@@ -88,6 +88,21 @@ async def extract_from_image(file: UploadFile = File(...)):
             for e in result.tva_entries
         ] if result.tva_entries else []
 
+        # Convert payment_methods from dict to PaymentMethod objects
+        from decimal import Decimal
+        payment_methods_list = [
+            PaymentMethod(method=pm['method'], amount=Decimal(str(pm['amount'])))
+            for pm in result.payment_methods
+        ] if result.payment_methods else []
+
+        # Auto-suggest payment_mode based on detected methods
+        suggested_payment_mode = None
+        if payment_methods_list:
+            has_card = any(pm.method == 'CARD' for pm in payment_methods_list)
+            if has_card:
+                suggested_payment_mode = 'banca'
+            # NUMERAR -> no auto-suggestion, user chooses between casa/avans
+
         data = ExtractionData(
             receipt_type=result.receipt_type,
             receipt_number=result.receipt_number,
@@ -101,6 +116,8 @@ async def extract_from_image(file: UploadFile = File(...)):
             tva_total=result.tva_total,
             address=result.address,
             items_count=result.items_count,
+            payment_methods=payment_methods_list,
+            suggested_payment_mode=suggested_payment_mode,
             confidence_amount=result.confidence_amount,
             confidence_date=result.confidence_date,
             confidence_vendor=result.confidence_vendor,
@@ -159,6 +176,21 @@ async def extract_from_attachment(
         for e in result.tva_entries
     ] if result.tva_entries else []
 
+    # Convert payment_methods from dict to PaymentMethod objects
+    from decimal import Decimal
+    payment_methods_list = [
+        PaymentMethod(method=pm['method'], amount=Decimal(str(pm['amount'])))
+        for pm in result.payment_methods
+    ] if result.payment_methods else []
+
+    # Auto-suggest payment_mode based on detected methods
+    suggested_payment_mode = None
+    if payment_methods_list:
+        has_card = any(pm.method == 'CARD' for pm in payment_methods_list)
+        if has_card:
+            suggested_payment_mode = 'banca'
+        # NUMERAR -> no auto-suggestion, user chooses between casa/avans
+
     data = ExtractionData(
         receipt_type=result.receipt_type,
         receipt_number=result.receipt_number,
@@ -172,6 +204,8 @@ async def extract_from_attachment(
         tva_total=result.tva_total,
         address=result.address,
         items_count=result.items_count,
+        payment_methods=payment_methods_list,
+        suggested_payment_mode=suggested_payment_mode,
         confidence_amount=result.confidence_amount,
         confidence_date=result.confidence_date,
         confidence_vendor=result.confidence_vendor,