fix(db): fill item_receipts.confirmed_by in office paths; resilient per-statement v2.6 upgrade (root cause of 500 on receipt)

backend/app/routers/item_receipts.py

@@ -7,6 +7,7 @@ from app.db.engine import get_db
 from app.models.procurement import ItemDecision, ItemReceipt, LineItem
 from app.schemas.procurement import ReceiptCreate, ReceiptUpdate
 from app.services.expand_service import receipt_full
+from app.services.quote_service import _fallback_confirmer_id
 from app.utils.errors import ConflictError, NotFoundError
 
 router = APIRouter(
@@ -52,6 +53,7 @@ async def create_receipt(quote_id, line_item_id, payload: ReceiptCreate, db: Asy
         raise ConflictError("رسید این خط آیتم قبلاً ثبت شده است")
     receipt = ItemReceipt(
         item_decision_id=decision.id,
+        confirmed_by=await _fallback_confirmer_id(db),
         received_at=payload.received_at,
         received_qty=payload.received_qty,
         on_time=payload.on_time,