fix: user

backend/app/services/assessment_service.py

@@ -15,7 +15,7 @@ logger = logging.getLogger(__name__)
 
 
 async def assess_case(case_id: UUID, db: AsyncSession) -> list[FraudAssessment]:
-    """Run rule-based assessment on all non-duplicate transactions and replace old results."""
+    """Run rule-based assessment and replace old results."""
     # Replace mode: rerun analysis for the same case should overwrite prior assessments
     # instead of appending duplicated rows.
     await db.execute(
@@ -26,23 +26,40 @@ async def assess_case(case_id: UUID, db: AsyncSession) -> list[FraudAssessment]:
     result = await db.execute(
         select(TransactionRecord)
         .where(TransactionRecord.case_id == case_id)
-        .where(TransactionRecord.is_duplicate.is_(False))
         .order_by(TransactionRecord.trade_time.asc())
     )
     transactions = list(result.scalars().all())
 
     assessments: list[FraudAssessment] = []
     for tx in transactions:
-        level, reason, exclude_reason = classify_transaction(tx)
+        if tx.is_duplicate:
+            level = ConfidenceLevel.low
+            reason = "该笔交易在交易归并中已标记为重复记录，属于同一笔交易的重复展示。"
+            exclude_reason = "交易归并已判定重复（订单号一致或人工标记为重复），不重复计入被骗金额。"
+            review_status = ReviewStatus.rejected
+            assessed_amount = 0
+        elif tx.is_transit:
+            level = ConfidenceLevel.low
+            reason = (
+                f"该笔交易在交易归并中已标记为中转（{tx.source_app.value} -> {tx.counterparty_name}），"
+                "属于本人账户间资金流转。"
+            )
+            exclude_reason = "交易归并已判定中转（本人账户间互转），不直接计入被骗金额。"
+            review_status = ReviewStatus.rejected
+            assessed_amount = 0
+        else:
+            level, reason, exclude_reason = classify_transaction(tx)
+            review_status = ReviewStatus.pending
+            assessed_amount = float(tx.amount) if level != ConfidenceLevel.low else 0
 
         fa = FraudAssessment(
             case_id=case_id,
             transaction_id=tx.id,
             confidence_level=level,
-            assessed_amount=float(tx.amount) if level != ConfidenceLevel.low else 0,
+            assessed_amount=assessed_amount,
             reason=reason,
             exclude_reason=exclude_reason,
-            review_status=ReviewStatus.pending,
+            review_status=review_status,
         )
         db.add(fa)
         assessments.append(fa)