diff --git a/apps/admin-web/src/pages/AdminEditorAssetQueryPage.test.tsx b/apps/admin-web/src/pages/AdminEditorAssetQueryPage.test.tsx
index f262b8254..0feeb767d 100644
--- a/apps/admin-web/src/pages/AdminEditorAssetQueryPage.test.tsx
+++ b/apps/admin-web/src/pages/AdminEditorAssetQueryPage.test.tsx
@@ -38,6 +38,7 @@ vi.mock('../api/adminApiClient', () => ({
 
 interface MockIntersectionObserverController {
   enter: (target: Element) => void;
+  enterAll: (targets: Element[]) => void;
   isObserved: (target: Element) => boolean;
 }
 
@@ -106,6 +107,25 @@ function installIntersectionObserverMock(): MockIntersectionObserverController {
         );
       });
     },
+    enterAll(targets) {
+      act(() => {
+        for (const target of targets) {
+          const record = observed.get(target);
+          if (!record) {
+            throw new Error('目标缩略图尚未进入 IntersectionObserver');
+          }
+          record.callback(
+            [
+              {
+                isIntersecting: true,
+                target,
+              } as IntersectionObserverEntry,
+            ],
+            record.observer,
+          );
+        }
+      });
+    },
     isObserved(target) {
       return observed.has(target);
     },
@@ -753,10 +773,10 @@ test('后台素材查询为大量同时可见的缩略图持续错峰换签', as
   const thumbnails = entries.map((entry) =>
     thumbnailElementForLabel(entry.label),
   );
-  thumbnails.forEach((thumbnail) => {
+  for (const thumbnail of thumbnails) {
     expect(observer.isObserved(thumbnail)).toBe(true);
-    observer.enter(thumbnail);
-  });
+  }
+  observer.enterAll(thumbnails);
   await act(async () => {
     await Promise.resolve();
   });
@@ -776,7 +796,7 @@ test('后台素材查询为大量同时可见的缩略图持续错峰换签', as
     await vi.advanceTimersByTimeAsync(200);
   });
   expect(getAdminAssetReadUrl).toHaveBeenCalledTimes(105);
-});
+}, 10_000);
 
 test('后台素材查询读取更多后为新进入可视区域的素材换签', async () => {
   const observer = installIntersectionObserverMock();
diff --git a/apps/ai-game-creator-shell/src/features/agent-runtime/directActiveTurns.ts b/apps/ai-game-creator-shell/src/features/agent-runtime/directActiveTurns.ts
index 0eadbeacd..58401f52a 100644
--- a/apps/ai-game-creator-shell/src/features/agent-runtime/directActiveTurns.ts
+++ b/apps/ai-game-creator-shell/src/features/agent-runtime/directActiveTurns.ts
@@ -38,11 +38,16 @@ export function useDirectActiveTurns({
   const [snapshotReadFailed, setSnapshotReadFailed] = useState(false);
   const mountedRef = useRef(true);
   const inFlightRef = useRef<Promise<void> | null>(null);
+  const retryTimerRef = useRef<number | null>(null);
 
   useEffect(() => {
     mountedRef.current = true;
     return () => {
       mountedRef.current = false;
+      if (retryTimerRef.current !== null) {
+        window.clearTimeout(retryTimerRef.current);
+        retryTimerRef.current = null;
+      }
     };
   }, []);
 
@@ -73,12 +78,12 @@ export function useDirectActiveTurns({
           return;
         } catch {
           if (attempt < DIRECT_ACTIVE_TURNS_READ_ATTEMPTS) {
-            await new Promise((resolve) =>
-              window.setTimeout(
-                resolve,
-                DIRECT_ACTIVE_TURNS_READ_RETRY_DELAY_MS * attempt,
-              ),
-            );
+            await new Promise((resolve) => {
+              retryTimerRef.current = window.setTimeout(() => {
+                retryTimerRef.current = null;
+                resolve();
+              }, DIRECT_ACTIVE_TURNS_READ_RETRY_DELAY_MS * attempt);
+            });
           }
         }
       }
diff --git a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
index 8ca03bfe5..51e004f20 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
@@ -3350,7 +3350,7 @@ export function registerProjectWorkbenchFoundationTests() {
     expect(URL.createObjectURL).toHaveBeenCalledTimes(
       objectUrlCountBeforeLateResult,
     );
-  });
+  }, 20_000);
 
   it('renders immutable manifest versions, their parent graph, and bound asset highlights', async () => {
     const manifest = createGameCreationAppManifest(
diff --git a/apps/ai-game-creator-shell/tests/workspaceLauncherManifestMerge.test.tsx b/apps/ai-game-creator-shell/tests/workspaceLauncherManifestMerge.test.tsx
index 28dde6e59..5ea530842 100644
--- a/apps/ai-game-creator-shell/tests/workspaceLauncherManifestMerge.test.tsx
+++ b/apps/ai-game-creator-shell/tests/workspaceLauncherManifestMerge.test.tsx
@@ -106,6 +106,8 @@ function installInvokeMock() {
           return { revision: HELD_REVISION };
         case 'get_design_agent_runtime_mode':
           return null;
+        case 'list_game_creator_direct_active_turns':
+          return [];
         case 'read_project_permission_policy':
           return {
             projectPath: PROJECT_PATH,
diff --git a/src/components/creation-home/CreationLandingView.test.tsx b/src/components/creation-home/CreationLandingView.test.tsx
index 1785dad1d..d1f0f2b4e 100644
--- a/src/components/creation-home/CreationLandingView.test.tsx
+++ b/src/components/creation-home/CreationLandingView.test.tsx
@@ -1351,7 +1351,7 @@ describe('CreationLandingView', () => {
       `/api/assets/read-url?objectKey=${encodeURIComponent(campaignObjectKey)}`,
       expect.objectContaining({ method: 'GET' }),
     );
-  });
+  }, 10_000);
 
   it('loads more featured resources when the list reaches the end', async () => {
     const observers = installIntersectionObserverMock();