🐛 fix(tab-manager): 修复工作区标签批量关闭菜单失效

- 将右键菜单项和下拉菜单排除在标签拖拽触发区域外
- 避免 dnd-kit 指针捕获吞掉关闭其他页及左右侧关闭操作
- 补充菜单项不触发拖拽的指针回归测试

frontend/src/components/TabManager.hover.test.tsx

@@ -68,10 +68,15 @@ describe('TabManager hover info', () => {
       closest: vi.fn((selector: string) =>
         selector.includes('.ant-tabs-tab-remove') ? { className: 'ant-tabs-tab-remove' } : null),
     } as unknown as EventTarget;
+    const contextMenuItem = {
+      closest: vi.fn((selector: string) =>
+        selector.includes('[role="menuitem"]') ? { role: 'menuitem' } : null),
+    } as unknown as EventTarget;
 
     expect(shouldActivateTabDragPointer({ button: 0, target: tabContent })).toBe(true);
     expect(shouldActivateTabDragPointer({ button: 0, target: closeIcon })).toBe(false);
     expect(shouldActivateTabDragPointer({ button: 0, target: legacyCloseIcon })).toBe(false);
+    expect(shouldActivateTabDragPointer({ button: 0, target: contextMenuItem })).toBe(false);
     expect(shouldActivateTabDragPointer({ button: 1, target: tabContent })).toBe(false);
     expect(shouldActivateTabDragPointer({ button: 2, target: tabContent })).toBe(false);
     expect(shouldActivateTabDragPointer({ button: 0, ctrlKey: true, target: tabContent })).toBe(false);
@@ -85,6 +90,10 @@ describe('TabManager hover info', () => {
     const closeIcon = {
       closest: vi.fn(() => ({ className: 'gn-v2-tab-close' })),
     } as unknown as EventTarget;
+    const contextMenuItem = {
+      closest: vi.fn((selector: string) =>
+        selector.includes('[role="menuitem"]') ? { role: 'menuitem' } : null),
+    } as unknown as EventTarget;
     const buildEvent = (overrides: Record<string, unknown> = {}) => ({
       button: 0,
       ctrlKey: false,
@@ -102,6 +111,7 @@ describe('TabManager hover info', () => {
     setPointerCapture.mockClear();
     listener.mockClear();
     handleTabDragPointerDown(buildEvent({ target: closeIcon }), listener);
+    handleTabDragPointerDown(buildEvent({ target: contextMenuItem }), listener);
     handleTabDragPointerDown(buildEvent({ button: 2 }), listener);
     handleTabDragPointerDown(buildEvent({ ctrlKey: true }), listener);
     expect(setPointerCapture).not.toHaveBeenCalled();

frontend/src/components/TabManager.tsx

@@ -521,7 +521,9 @@ const TAB_DRAG_INTERACTIVE_SELECTOR = [
   'select',
   '[contenteditable="true"]',
   '[role="button"]',
+  '[role="menuitem"]',
   '[data-tab-drag-ignore="true"]',
+  '.ant-dropdown-menu',
   '.ant-tabs-tab-remove',
   '.gn-v2-tab-close',
 ].join(', ');