✨ feat(sidebar): 新增表节点右键复制表名功能

- 左侧表节点右键菜单增加复制表名入口
- 复制真实表名并提供中文剪贴板提示
- 补充表名解析逻辑测试
Refs #460

frontend/package.json.md5

@@ -1 +1 @@
-d0464f9da25e9356e61652e638c99ffe
+d0464f9da25e9356e61652e638c99ffe

frontend/src/components/Sidebar.locate-toolbar.test.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { renderToStaticMarkup } from 'react-dom/server';
 import { describe, expect, it, vi } from 'vitest';
 
-import Sidebar from './Sidebar';
+import Sidebar, { resolveSidebarTableNameForCopy } from './Sidebar';
 
 const mocks = vi.hoisted(() => ({
   noop: vi.fn(),
@@ -80,6 +80,17 @@ vi.mock('../../wailsjs/runtime/runtime', () => ({
 }));
 
 describe('Sidebar locate toolbar', () => {
+  it('resolves the table name used by the sidebar copy action', () => {
+    expect(resolveSidebarTableNameForCopy({
+      title: 'users',
+      dataRef: { tableName: 'public.users' },
+    })).toBe('public.users');
+    expect(resolveSidebarTableNameForCopy({
+      title: 'users',
+      dataRef: {},
+    })).toBe('users');
+  });
+
   it('renders the current table locate action in the sidebar toolbar', () => {
     const markup = renderToStaticMarkup(<Sidebar />);
     const externalSqlActionIndex = markup.indexOf('data-sidebar-open-external-sql-file-action="true"');

frontend/src/components/Sidebar.tsx

@@ -76,6 +76,10 @@ interface TreeNode {
   type?: 'connection' | 'database' | 'table' | 'view' | 'db-trigger' | 'routine' | 'object-group' | 'queries-folder' | 'saved-query' | 'external-sql-root' | 'external-sql-directory' | 'external-sql-folder' | 'external-sql-file' | 'folder-columns' | 'folder-indexes' | 'folder-fks' | 'folder-triggers' | 'redis-db' | 'tag' | 'jvm-mode' | 'jvm-resource' | 'jvm-diagnostic' | 'jvm-monitoring';
 }
 
+export const resolveSidebarTableNameForCopy = (node: Pick<TreeNode, 'title' | 'dataRef'> | null | undefined): string => {
+  return String(node?.dataRef?.tableName || node?.title || '').trim();
+};
+
 type BatchTableExportMode = 'schema' | 'backup' | 'dataOnly';
 type BatchObjectType = 'table' | 'view';
 type BatchObjectFilterType = 'all' | BatchObjectType;
@@ -2055,6 +2059,20 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
       }
   };
 
+  const handleCopyTableName = async (node: any) => {
+      const tableName = resolveSidebarTableNameForCopy(node);
+      if (!tableName) {
+          message.warning('表名为空，无法复制');
+          return;
+      }
+      try {
+          await navigator.clipboard.writeText(tableName);
+          message.success('表名已复制到剪贴板');
+      } catch (e: any) {
+          message.error('复制表名失败: ' + (e?.message || String(e)));
+      }
+  };
+
   const handleExport = async (node: any, format: string) => {
       const { config, dbName, tableName } = node.dataRef;
       const hide = message.loading(`正在导出 ${tableName} 为 ${format.toUpperCase()}...`, 0);
@@ -4302,6 +4320,12 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
                 icon: <EditOutlined />,
                 onClick: () => openDesign(node, 'columns', false)
             },
+            {
+                key: 'copy-table-name',
+                label: '复制表名',
+                icon: <CopyOutlined />,
+                onClick: () => handleCopyTableName(node)
+            },
             {
                 key: 'copy-structure',
                 label: '复制表结构',