fix(agent-office): useActivityFeed stale 응답 무시 (필터 변경 중 in-flight 요청)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/agent-office/hooks/useActivityFeed.js

@@ -12,28 +12,35 @@ export function useActivityFeed(filters, refreshTrigger = 0) {
 
   const offsetRef = useRef(0);
   const loadingRef = useRef(false);
+  const requestIdRef = useRef(0);
   const filtersRef = useRef(filters);
   filtersRef.current = filters;
 
   const filterKey = JSON.stringify(filters);
 
   const fetchPage = useCallback(async (offset, replace) => {
-    if (loadingRef.current) return;
+    // append(loadMore)만 중복 방지. replace(필터/refresh 재조회)는 항상 우선 진행.
+    if (!replace && loadingRef.current) return;
+    const reqId = ++requestIdRef.current;
     loadingRef.current = true;
     setLoading(true);
     setError(null);
     try {
       const data = await agentActivity({ ...filtersRef.current, limit: PAGE_SIZE, offset });
+      if (reqId !== requestIdRef.current) return; // 더 새로운 요청이 시작됨 → stale 응답 무시
       const newItems = Array.isArray(data?.items) ? data.items : [];
       setTotal(data?.total || 0);
       setItems(prev => (replace ? newItems : [...prev, ...newItems]));
       offsetRef.current = offset + newItems.length;
     } catch (e) {
+      if (reqId !== requestIdRef.current) return;
       setError(e.message || '불러오기 실패');
     } finally {
+      if (reqId === requestIdRef.current) {
         loadingRef.current = false;
         setLoading(false);
       }
+    }
   }, []);
 
   useEffect(() => {

src/pages/agent-office/hooks/useActivityFeed.test.js

@@ -56,4 +56,18 @@ describe('useActivityFeed', () => {
     await waitFor(() => expect(result.current.items).toHaveLength(1));
     expect(result.current.hasMore).toBe(true);
   });
+
+  it('필터 변경 중이던 이전(stale) 요청 응답은 무시된다', async () => {
+    let resolveFirst;
+    const firstPromise = new Promise(r => { resolveFirst = r; });
+    mockAgentActivity
+      .mockReturnValueOnce(firstPromise) // 초기 요청 — 느리게 resolve
+      .mockResolvedValueOnce({ items: [item({ task_id: 'fresh', agent_id: 'insta' })], total: 1 });
+    const { result, rerender } = renderHook(({ f }) => useActivityFeed(f, 0), { initialProps: { f: { days: 7 } } });
+    rerender({ f: { days: 7, agent_id: 'insta' } }); // 첫 요청 resolve 전에 필터 변경
+    await waitFor(() => expect(result.current.items[0]?.task_id).toBe('fresh'));
+    await act(async () => { resolveFirst({ items: [item({ task_id: 'stale' })], total: 99 }); });
+    expect(result.current.items[0].task_id).toBe('fresh'); // stale이 덮어쓰지 않음
+    expect(result.current.total).toBe(1);
+  });
 });