✨ feat(tool-center): 优化工具中心分组交互与通用弹窗

- 重构工具中心为侧边分组导航，固定弹窗高度并支持内部滚动
- 新增通用可拖拽可缩放 Modal，统一主要弹窗打开体验
- 为工具中心内嵌入口补充返回上一步交互与底部操作区
- 补充多语言文案和工具中心/Modal/i18n 回归测试

frontend/src/components/FindInDatabaseModal.tsx

@@ -1,5 +1,6 @@
+import Modal from './common/ResizableDraggableModal';
 import React, { useState, useRef, useCallback, useMemo } from 'react';
-import { Modal, Input, Button, Table, Progress, Space, Tag, message, Tooltip, Select, Empty } from 'antd';
+import { Input, Button, Table, Progress, Space, Tag, message, Tooltip, Select, Empty } from 'antd';
 import { SearchOutlined, StopOutlined, EyeOutlined, DatabaseOutlined } from '@ant-design/icons';
 import { DBQuery, DBGetTables, DBGetAllColumns } from '../../wailsjs/go/app/App';
 import { quoteIdentPart, escapeLiteral } from '../utils/sql';