feat(assoc): v4.0.1 合伙人关联码、分佣账单与 H5 用户管理

订单佣金只认关联用户；合伙人备注写入独立表；H5 增加用户管理与首页统计。

Co-authored-by: Cursor <cursoragent@cursor.com>

server/dukang-api/src/common/interceptors/response.interceptor.ts

@@ -8,13 +8,17 @@ import { Observable, map } from 'rxjs';
 
 @Injectable()
 export class ResponseInterceptor implements NestInterceptor {
-  intercept(_context: ExecutionContext, next: CallHandler): Observable<unknown> {
+  intercept(context: ExecutionContext, next: CallHandler): Observable<unknown> {
+    const res = context.switchToHttp().getResponse<{ headersSent?: boolean }>();
     return next.handle().pipe(
-      map((data) => ({
-        code: 0,
-        message: 'ok',
-        data: data ?? null,
-      })),
+      map((data) => {
+        if (res.headersSent) return data;
+        return {
+          code: 0,
+          message: 'ok',
+          data: data ?? null,
+        };
+      }),
     );
   }
 }