✨ feat(sidebar): 优化对象菜单与旧版布局交互

- 为已存查询右键菜单补充重命名能力并同步已打开标签

- 优化 v2 侧栏与表概览右键菜单定位，避免底部遮挡

- 精简旧版数据视图工具栏布局并统一快捷键显示

- 补充侧栏与表概览菜单回归测试

frontend/src/components/TableOverview.context-menu.test.ts

@@ -0,0 +1,28 @@
+import { readFileSync } from 'node:fs';
+import { describe, expect, it } from 'vitest';
+
+describe('TableOverview v2 context menu', () => {
+  it('renders card and list table context menus through a measured portal', () => {
+    const source = readFileSync(new URL('./TableOverview.tsx', import.meta.url), 'utf8');
+    const cardSource = source.slice(
+      source.indexOf('const renderCardTableContent = (t: TableStatRow) => ('),
+      source.indexOf('const renderListTable = (t: TableStatRow) => {'),
+    );
+    const listSource = source.slice(
+      source.indexOf('const renderListTable = (t: TableStatRow) => {'),
+      source.indexOf('if (loading) {'),
+    );
+
+    expect(source).toContain("import { createPortal } from 'react-dom';");
+    expect(source).toContain('resolveOverviewContextMenuPosition(event.clientX, event.clientY)');
+    expect(source).toContain('v2ContextMenuPortalRef');
+    expect(source).toContain('content?.scrollHeight');
+    expect(source).toContain('gn-v2-table-overview-context-menu-portal');
+    expect(source).toContain("['--gn-v2-context-menu-max-height' as any]");
+    expect(source).toContain('renderV2OverviewTableContextMenu(v2ContextMenuTable)');
+    expect(cardSource).toContain('onContextMenu={isV2Ui ? (event) => openV2OverviewContextMenu(event, t) : undefined}');
+    expect(listSource).toContain('onContextMenu={isV2Ui ? (event) => openV2OverviewContextMenu(event, t) : undefined}');
+    expect(cardSource).not.toContain('popupRender');
+    expect(listSource).not.toContain('popupRender');
+  });
+});