修复同卡复核重复字段校验

server/src/main/java/cn/nianxx/thhotel/workflows/reservation/service/impl/ReservationTaskWorkflowServiceImpl.java

@@ -807,9 +807,14 @@ public class ReservationTaskWorkflowServiceImpl implements ReservationTaskWorkfl
         Map<String, ReservationTaskCardFieldDefinition> definitionByPath = new LinkedHashMap<>();
         activeDefinitions.forEach(definition -> definitionByPath.put(definition.fieldPath(), definition));
         List<ManualReviewResolutionFieldOverrideResult> results = new ArrayList<>();
+        Set<String> seenPointers = new LinkedHashSet<>();
+        Set<String> seenFieldPaths = new LinkedHashSet<>();
         for (ManualReviewResolutionFieldOverrideRequest request : requests) {
             String fieldPointer = trimToNull(request == null ? null : request.fieldPointer());
             ReservationTaskCardFieldDefinition definition = findEditableDefinitionByPointer(definitionByPath, fieldPointer);
+            if (!seenPointers.add(fieldPointer) || !seenFieldPaths.add(definition.fieldPath())) {
+                throw reviewPointerDuplicateError(fieldPointer, definition.fieldPath());
+            }
             results.add(new ManualReviewResolutionFieldOverrideResult(
                     fieldPointer,
                     definition.fieldPath(),
@@ -818,6 +823,17 @@ public class ReservationTaskWorkflowServiceImpl implements ReservationTaskWorkfl
         return results;
     }
 
+    /**
+     * 构建重复复核字段错误，避免 confirmed payload 后值覆盖前值但审计保留多条冲突记录。
+     */
+    private ReservationTaskWorkflowException reviewPointerDuplicateError(String fieldPointer, String fieldPath) {
+        return new ReservationTaskWorkflowException(
+                HttpStatus.BAD_REQUEST,
+                "TASK_REVIEW_POINTER_DUPLICATE",
+                "复核字段指针重复。",
+                List.of(fieldPointer + ": 重复指向字段 " + fieldPath + "。"));
+    }
+
     /**
      * 复核 pointer 白名单使用当前卡型的可编辑字段全集；展示条件由合并后的 activeDefinitions 再兜底校验。
      */