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 04da6b4d8..b5040611a 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
@@ -1605,6 +1605,135 @@ export function registerProjectWorkbenchFoundationTests() {
     expect(searchTrigger().className).not.toContain('is-active');
   });
 
+  it('keeps the overview-return button out of the floating notice layer hit region', () => {
+    const styles = readFileSync(
+      resolve(process.cwd(), 'apps/ai-game-creator-shell/src/styles.css'),
+      'utf8',
+    );
+    const tsxSource = readFileSync(
+      resolve(
+        process.cwd(),
+        'apps/ai-game-creator-shell/src/view/project-development/index.tsx',
+      ),
+      'utf8',
+    );
+    const sceneZIndex = styleNumber(
+      styleRuleBody(styles, '\\.game-resource-book-scene'),
+      'z-index',
+    );
+    const titlebar = styleRuleBody(
+      styles,
+      '\\.game-resource-book-scene-titlebar',
+    );
+    const titlebarZIndex = styleNumber(titlebar, 'z-index');
+    const titlebarHeight = styleNumber(titlebar, 'min-height');
+    expect(titlebarZIndex).toBeGreaterThan(sceneZIndex);
+    expect(titlebarHeight).toBeGreaterThan(0);
+
+    // 提示层为了看得见必须浮在栏目标题栏之上——正因为如此，它必须把命中区域限死在提示条
+    // 自己的盒子里：容器 `pointer-events: none` + 提示条 `auto`。分页态标题栏右端的
+    // 「资源总览」（回到资源总览）就在这条带里，容器一旦吃点击，那颗按钮就点不动。
+    const notices = styleRuleBody(styles, '\\.game-resource-book-notices');
+    expect(styleNumber(notices, 'z-index')).toBeGreaterThan(titlebarZIndex);
+    expect(notices).toMatch(/pointer-events:\s*none/u);
+    expect(
+      styleRuleBody(styles, '\\.game-resource-book-notices > \\*'),
+    ).toMatch(/pointer-events:\s*auto/u);
+    // 提示条顶边在标题栏那条带以下：连视觉重叠都不会发生，不只是命中被放行。
+    expect(styleNumber(notices, 'top')).toBeGreaterThanOrEqual(titlebarHeight);
+
+    // 成因本身也钉住：横跨整行、z-index 40 的常驻工具条带（当初为常驻搜索框引入）已经不在了，
+    // 它盖在标题栏那条带上时，正好吃掉了返回按钮的命中区域。
+    expect(styles).not.toContain('game-resource-book-tools');
+    expect(tsxSource).not.toContain('game-resource-book-tools');
+  });
+
+  it('returns to the overview from the paged titlebar while the notice layer is on screen', async () => {
+    const manifest = createGameCreationAppManifest(
+      'workbench-return-overview-hit',
+      '回到总览命中区测试',
+    );
+    manifest.assets = [
+      {
+        id: 'return-overview-art',
+        kind: 'character',
+        mediaType: 'image/png',
+        localPath: 'assets/return-hero.png',
+        source: { kind: 'generated', taskId: 'art-asset-plan' },
+      },
+    ];
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_graph') {
+          return resourceGraphForInputs(args);
+        }
+        if (command === 'read_local_project_resource_canvas_layout') {
+          return {
+            schemaVersion: 'game-creator-resource-layout.v1',
+            projectId: args?.expectedProjectId,
+            mode: args?.mode,
+            revision: 0,
+            positions: [],
+            updatedAt: 0,
+          };
+        }
+        throw new Error(`unexpected invoke ${command}`);
+      },
+    );
+    window.__TAURI__ = { core: { invoke } };
+
+    render(
+      React.createElement(ProjectDevelopmentView, {
+        projectName: manifest.name,
+        projectPath: '/tmp/workbench-return-overview-hit',
+        manifest,
+        attachments: [
+          {
+            fileName: 'broken.txt',
+            mediaType: 'text/plain',
+            status: 'failed' as const,
+            error: '附件导入失败',
+          },
+        ],
+        recentRunStatus: null,
+        recentRunStopReason: null,
+        supervisor: React.createElement('div', null, '项目总控'),
+        onHomeOpen: vi.fn(),
+        onProjectsOpen: vi.fn(),
+      }),
+    );
+
+    // 提示层在场：附件导入失败条渲染在这层浮层里，而这层浮层不属于画本场景。
+    const notices = document.querySelector('.game-resource-book-notices');
+    expect(notices).not.toBeNull();
+    expect(notices?.querySelector('.game-attachment-errors')).not.toBeNull();
+    expect(notices?.closest('.game-resource-book-scene')).toBeNull();
+    expect(notices?.querySelector('.game-resource-book-scene')).toBeNull();
+
+    await openResourceBookCategory('角色与对象');
+    const activeTitlebar = document.querySelector<HTMLElement>(
+      '.game-resource-book-scene-titlebar.is-active',
+    );
+    expect(activeTitlebar).not.toBeNull();
+    const returnButton = within(activeTitlebar as HTMLElement).getByRole(
+      'button',
+      { name: '收起资源' },
+    ) as HTMLButtonElement;
+    // 按钮可点：不是 disabled，祖先链上也没有提示层那类跨整行的浮层容器。
+    expect(returnButton.disabled).toBe(false);
+    expect(returnButton.closest('.game-resource-book-notices')).toBeNull();
+
+    // jsdom 不做布局命中的判定，能钉住的是"层级关系 + 按钮真的接在返回总览上"：
+    // 默认运行时不带 aria-disabled、点击真的切回总览态。
+    fireEvent.click(returnButton);
+    expect(
+      document
+        .querySelector('[data-resource-book-view]')
+        ?.getAttribute('data-resource-book-view'),
+    ).toBe('main');
+    expect(screen.getByRole('region', { name: '资源总览' })).not.toBeNull();
+  });
+
   it('paints the marquee selection box with the scene token root and non-empty geometry', async () => {
     const manifest = createGameCreationAppManifest(
       'workbench-marquee-colour',