新增：收藏夹折叠+帮助文档区块+拖拽排序修复

- Sidebar 双区块架构：收藏夹(可折叠) + 帮助文档(默认折叠) - 帮助内容：5条常用快捷键静态展示 - 折叠动画：max-height + opacity 过渡，自适应视口高度 - 修复拖拽死锁：draggable 条件改为 pressedIndex || isDragging - 修复长按误触：200ms 时延防单击触发 draggable - 修复排序持久化：sortFavorites 仅分组保序，不再覆盖拖拽顺序 - 清理死代码：.sidebar-divider、dataTransfer.setData
优化：工具栏高度对齐+面板统一+远程连接架构+自动恢复预览
2026-04-30 23:01:47 +08:00 · 2026-04-30 22:25:27 +08:00 · 2026-04-26 00:03:22 +08:00 · 2026-04-25 23:26:25 +08:00 · 2026-04-22 08:05:42 +08:00 · 2026-04-21 21:53:31 +08:00
144 changed files with 3116 additions and 18826 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,48 @@
 # 更新日志

+## [0.4.0] - 2026-04-25
+
+### 重构 🔧
+- **移除数据库客户端模块**: 删除全部 MySQL/Redis/MongoDB 相关代码（-17,885 行），应用专注文件管理
+- **清理依赖**: 移除 go-sql-driver/mysql、go-redis/v9、mongo-driver/v2、gorm.io/driver/mysql 等驱动依赖
+- **构建体积优化**: 原始 exe 从 36MB 降至 26MB，UPX 压缩后仅 7.5MB（压缩率 28.8%）
+
+### 变更说明
+- 顶部 Tab 仅保留「文件管理」，移除数据库入口
+- Markdown 编辑器、版本历史、系统信息、更新检查等模块不受影响
+- 本地 SQLite 配置存储（AppConfig）保留不变
+
+---
+
+## [0.3.4] - 2026-04-22
+
+### 新增 ✨
+- **CodeMirror 搜索功能**: Ctrl+F / Ctrl+H 全局查找替换，`@codemirror/search` 集成
+- **编辑器滚动位置恢复**: LRU 缓存（最多5份/3分钟TTL），切换文件不丢位置
+- **文件列表列排序**: 图标/名称/时间/大小四列可排序，升序降序切换
+- **文件搜索过滤**: 工具栏实时搜索框，按文件名过滤列表
+- **Toolbar UI 重排**: 快捷访问内嵌面包屑左侧、历史记录改为图标+tooltip、Ctrl+H 快捷键
+- **更新面板 Markdown 渲染**: changelog 用 `marked.parse()` 结构化渲染，替代纯文本
+- **重命名零闪烁**: `updateFilePath()` 仅迁移路径引用+草稿key，不重新加载内容
+
+### 优化 🚀
+- **路径安全重构**: `validateFilePath()` 提取统一函数，消除两处重复校验代码
+- **requireUpdateAPI 模式**: 7 处重复 nil 检查收敛为 guard 方法
+- **端口统一**: 文件服务器端口 18765→8073，全局一致消除魔法数字分散
+- **文件服务器 URL 动态获取**: 前端从后端 API 获取，不再硬编码
+- **Tab 配置迁移扩展**: MigrateTabConfig 改为 map 驱动，覆盖 openclaw-manager→version 迁移
+- **updateContent 简化**: 去掉时间窗口双重检查，仅保留版本号机制
+
+### 安全修复 🔒
+- **sentinel error 替代字符串匹配**: validateFilePath 错误用 `errors.Is()` 判断，消息变更不再静默失效
+- **sanitizeHtml 防御远程 Markdown XSS**: 过滤 script/iframe/embed/on* 事件属性
+
+### 修复 🐛
+- **showHeader 默认值修正**: localStorage 无值时默认显示表头（兼容旧行为）
+- **外层容器双重 scroll reset 移除**: 避免 CodeEditor 内部滚动恢复与外层 reset 冲突闪烁
+
+---
+
 ## [0.3.3] - 2026-04-13

 ### 新增 ✨
@@ -14,15 +57,15 @@

 ### 优化 🚀
 - MySQL 动态连接池重构 — 健康检查、性能权重、自适应扩缩容
- SQL 查询优化器 — 查询缓存、慢查询日志 (762 行)
+- SQL 查询优化器 — 查询缓存、慢查询日志
 - Redis Pipeline — 批量命令、事务 MULTI/EXEC 支持
 - Office/CSV 预览增强 — 本地文件服务器获取文件
 - Markdown 增强 — 本地文件链接支持、Shell 语法高亮
 - HTML 预览 — 改用 iframe src 替代 srcdoc
 - Wails 框架升级 + Mermaid 主题切换 + 代码高亮修复
- FileListPanel 重写 (+511 行) — 删除 FileItemRow，统一列表渲染逻辑
+- 文件列表 UI 重构 — 统一渲染逻辑，提升滚动性能
 - CSV 编辑模式优化 + PDF 导出重构
- 拷贝功能优化 — 新增 ClipboardCopy composable
+- 拷贝功能优化

 ### 修复 🐛
 - Office 文件预览：修复类型检测与二进制误判
@@ -39,10 +82,9 @@
 ### 重构 🔧
 - CodeMirror 架构优化 — 统一导出避免多实例问题
 - 消除代码重复 — storage/connection_service 重构、useVisibleDatabases 抽取
- **大规模死代码清理 (-1306 行)**: 删除废弃 storage 层(connection_service 279行)、audit_log、file_lock、recycle_bin、zip_helper、useFileEdit.js(-369行)、useFilePreview.js(-603行)、errorHandler.js(-63行)、DeviceTest 清理等
+- 大规模死代码清理，显著减小包体积
 - 配置加载超时保护（最多重试 30 次）
- 正则表达式预编译（query_optimizer）
- 缓存读锁优化 + SHA-256 key hash
+- 正则表达式预编译、缓存读锁优化
 - 禁止 Ctrl+滚轮缩放
 - Dockerfile 语法高亮支持
 - 滚动条样式修复
--- a/README.md
+++ b/README.md
@@ -1,10 +1,22 @@
-# U-Desk v0.3.3
+# U-Desk v0.3.4

 ## 功能
- 数据库客户端
- Markdown编辑器
- PDF导出
+- **文件管理** — 本地文件浏览、编辑（CodeMirror 语法高亮+搜索）、预览（图片/视频/PDF/HTML/Markdown/Excel/Word/CSV）
+- **数据库客户端** — 多数据库连接管理、SQL 执行、查询历史、表结构管理
+- **Markdown 编辑器** — 独立编辑页面、实时预览、PDF 导出
+- **版本更新** — 自动检查更新、下载安装、changelog 渲染
+- **系统信息** — CPU/内存/磁盘硬件信息查询
+
+## 技术栈
+- **后端**: Go + Wails v2 (桌面应用框架)
+- **前端**: Vue 3 + Arco Design + CodeMirror 6 + Pinia
+- **存储**: SQLite (GORM)
+- **本地文件服务器**: `localhost:8073`（CSS/JS 路径转换、HTML 预览）
+
+## 开发
+```bash
+wails dev
+```

 ## 更新
- ✅ MD编辑器完成
- ✅ PDF导出优化中
+- ✅ 文件服务器安全重构+编辑器增强+搜索排序+更新面板渲染
--- a/app.go
+++ b/app.go
@@ -1,9 +1,11 @@
+// [fs-only] 数据库客户端模块已移除（feature/fs-only 分支）
+// 保留模块：文件系统 | Markdown编辑器 | 版本历史(抽屉) | 系统信息 | 更新检查 | PDF导出
+// 顶部Tab仅：file-system（数据库 db-cli 已删除）
 package main

 import (
 	"context"
 	"fmt"
-	"net/http"
 	"os"
 	"path/filepath"
 	stdruntime "runtime"
@@ -24,13 +26,9 @@ import (
 // App 应用结构体
 type App struct {
 	ctx             context.Context
-	connectionAPI   *api.ConnectionAPI
-	sqlAPI          *api.SqlAPI
-	tabAPI          *api.TabAPI
 	updateAPI       *api.UpdateAPI
 	configAPI       *api.ConfigAPI
 	pdfAPI          *api.PdfAPI
-	fileServer      *http.Server
 	filesystem      *filesystem.FileSystemService
 	isAlwaysOnTop   bool
 }
@@ -138,31 +136,6 @@ func (a *App) getVisibleTabs() []string {

 // initModulesByConfig 根据配置初始化模块
 func (a *App) initModulesByConfig(visibleTabs []string) error {
-	// 检查是否启用数据库模块
-	if common.Contains(visibleTabs, common.TabDatabase) {
-		fmt.Println("[启动] 初始化数据库模块...")
-		var err error
-
-		// 初始化 ConnectionAPI
-		if a.connectionAPI, err = api.NewConnectionAPI(); err != nil {
-			return err
-		}
-
-		// 初始化 SqlAPI
-		if a.sqlAPI, err = api.NewSqlAPI(); err != nil {
-			return err
-		}
-
-		// 初始化 TabAPI
-		if a.tabAPI, err = api.NewTabAPI(); err != nil {
-			return err
-		}
-
-		fmt.Println("[启动] 数据库模块初始化完成")
-	} else {
-		fmt.Println("[启动] 跳过数据库模块（未启用）")
-	}
-
 	// 检查是否启用文件系统模块
 	if common.Contains(visibleTabs, common.TabFileSystem) {
 		fmt.Println("[启动] 初始化文件系统模块...")
@@ -194,7 +167,7 @@ func (a *App) startFileServer() {
 		return
 	}

-	fmt.Println("[文件服务器] 启动在 http://localhost:18765")
+	fmt.Println("[文件服务器] 启动在 http://localhost:8073")
 }

 // Shutdown 应用关闭时调用
@@ -415,7 +388,7 @@ func (a *App) GetCommonPaths() (map[string]string, error) {
 	// Windows: 从注册表读取特殊文件夹真实路径（用户可能已修改位置）
 	folderGUIDs := map[string]string{
 		"desktop":   "{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}",
-		"documents": "{D20B4C7F-5EA7-40D4B25E-039F6F1FCC8A}",
+		"documents": "{D20B4C7F-5EA7-424C-B25E-039F6F1FCC8A}",
 		"downloads": "{374DE290-123F-4565-9164-39C4925E467B}",
 	}
 	for name, guid := range folderGUIDs {
@@ -441,94 +414,6 @@ func (a *App) GetCommonPaths() (map[string]string, error) {
 	return paths, nil
 }

-// ========== 数据库连接管理接口 ==========
-
-// SaveDbConnection 保存数据库连接配置
-func (a *App) SaveDbConnection(req api.SaveConnectionRequest) error {
-	return a.connectionAPI.SaveDbConnection(req)
-}
-
-// ListDbConnections 获取连接列表
-func (a *App) ListDbConnections() ([]map[string]interface{}, error) {
-	return a.connectionAPI.ListDbConnections()
-}
-
-// DeleteDbConnection 删除连接配置
-func (a *App) DeleteDbConnection(id uint) error {
-	return a.connectionAPI.DeleteDbConnection(id)
-}
-
-// TestDbConnection 测试连接（通过已保存的连接ID）
-func (a *App) TestDbConnection(id uint) error {
-	return a.connectionAPI.TestDbConnection(id)
-}
-
-// TestDbConnectionWithParams 测试数据库连接（直接传入参数，不保存数据）
-func (a *App) TestDbConnectionWithParams(req api.TestConnectionRequest) error {
-	return a.connectionAPI.TestDbConnectionWithParams(req)
-}
-
-// LoadAllDatabases 加载全部数据库列表
-func (a *App) LoadAllDatabases(req api.LoadAllDatabasesRequest) ([]string, error) {
-	return a.connectionAPI.LoadAllDatabases(req)
-}
-
-// ExecuteSQL 执行 SQL 语句
-// 注意：SQL 语句应该已经包含分页信息（LIMIT 和 OFFSET），由客户端添加
-func (a *App) ExecuteSQL(connectionId uint, sqlStr string, database string) (map[string]interface{}, error) {
-	return a.sqlAPI.ExecuteSQL(connectionId, sqlStr, database)
-}
-
-// GetDatabases 获取数据库列表
-func (a *App) GetDatabases(connectionId uint) ([]string, error) {
-	return a.sqlAPI.GetDatabases(connectionId)
-}
-
-// GetTables 获取表列表
-func (a *App) GetTables(connectionId uint, database string) ([]string, error) {
-	return a.sqlAPI.GetTables(connectionId, database)
-}
-
-// GetTableStructure 获取表结构
-func (a *App) GetTableStructure(connectionId uint, database, tableName string) (map[string]interface{}, error) {
-	return a.sqlAPI.GetTableStructure(connectionId, database, tableName)
-}
-
-// GetIndexes 获取索引列表
-func (a *App) GetIndexes(connectionId uint, database, tableName string) ([]map[string]interface{}, error) {
-	return a.sqlAPI.GetIndexes(connectionId, database, tableName)
-}
-
-// PreviewTableStructure 预览表结构变更
-func (a *App) PreviewTableStructure(connectionId uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	return a.sqlAPI.PreviewTableStructure(connectionId, database, tableName, structure)
-}
-
-// UpdateTableStructure 更新表结构
-func (a *App) UpdateTableStructure(connectionId uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	return a.sqlAPI.UpdateTableStructure(connectionId, database, tableName, structure)
-}
-
-// SaveResult 手动保存执行结果
-func (a *App) SaveResult(connectionId uint, database, sql string, resultType string, data interface{}, columns []string, rowsAffected int, executionTime int64) (map[string]interface{}, error) {
-	return a.sqlAPI.SaveResult(connectionId, database, sql, resultType, data, columns, rowsAffected, executionTime)
-}
-
-// GetResultHistory 获取结果历史
-func (a *App) GetResultHistory(connectionId *uint, keyword string, limit, offset int) (map[string]interface{}, error) {
-	return a.sqlAPI.GetResultHistory(connectionId, keyword, limit, offset)
-}
-
-// GetResultHistoryByID 根据ID获取结果历史
-func (a *App) GetResultHistoryByID(id uint) (map[string]interface{}, error) {
-	return a.sqlAPI.GetResultHistoryByID(id)
-}
-
-// DeleteResultHistory 删除结果历史
-func (a *App) DeleteResultHistory(id uint) error {
-	return a.sqlAPI.DeleteResultHistory(id)
-}
-
 // Reload 重新加载窗口（用于菜单项）
 func (a *App) Reload() {
 	if a.ctx != nil {
@@ -589,82 +474,86 @@ func (a *App) WindowToggleAlwaysOnTop() bool {
 	return a.isAlwaysOnTop
 }

-// ========== SQL 标签页管理接口 ==========
-
-// SaveSqlTabs 保存 SQL 标签页列表
-func (a *App) SaveSqlTabs(tabs []map[string]interface{}) error {
-	return a.tabAPI.SaveSqlTabs(tabs)
-}
-
-// ListSqlTabs 获取 SQL 标签页列表
-func (a *App) ListSqlTabs() ([]map[string]interface{}, error) {
-	return a.tabAPI.ListSqlTabs()
-}
-
 // ========== 版本更新管理接口 ==========

-// CheckUpdate 检查更新（UpdateAPI 可能尚未初始化完成）
-func (a *App) CheckUpdate() (map[string]interface{}, error) {
+// requireUpdateAPI 检查 updateAPI 是否已初始化，未初始化返回统一错误
+func (a *App) requireUpdateAPI() (*api.UpdateAPI, error) {
 	if a.updateAPI == nil {
 		return nil, fmt.Errorf("更新功能正在初始化中")
 	}
-	return a.updateAPI.CheckUpdate()
+	return a.updateAPI, nil
+}
+
+// CheckUpdate 检查更新（UpdateAPI 可能尚未初始化完成）
+func (a *App) CheckUpdate() (map[string]interface{}, error) {
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
+	}
+	return api.CheckUpdate()
 }

 // GetCurrentVersion 获取当前版本号
 func (a *App) GetCurrentVersion() (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.GetCurrentVersion()
+	return api.GetCurrentVersion()
 }

 // GetUpdateConfig 获取更新配置
 func (a *App) GetUpdateConfig() (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.GetUpdateConfig()
+	return api.GetUpdateConfig()
 }

 // SetUpdateConfig 设置更新配置
 func (a *App) SetUpdateConfig(autoCheckEnabled bool, checkIntervalMinutes int, checkURL string) (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.SetUpdateConfig(autoCheckEnabled, checkIntervalMinutes, checkURL)
+	return api.SetUpdateConfig(autoCheckEnabled, checkIntervalMinutes, checkURL)
 }

 // DownloadUpdate 下载更新包
 func (a *App) DownloadUpdate(downloadURL string) (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.DownloadUpdate(downloadURL)
+	return api.DownloadUpdate(downloadURL)
 }

 // InstallUpdate 安装更新包
 func (a *App) InstallUpdate(installerPath string, autoRestart bool) (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.InstallUpdate(installerPath, autoRestart)
+	return api.InstallUpdate(installerPath, autoRestart)
 }

 // InstallUpdateWithHash 安装更新包（带哈希验证）
 func (a *App) InstallUpdateWithHash(installerPath string, autoRestart bool, expectedHash string, hashType string) (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.InstallUpdateWithHash(installerPath, autoRestart, expectedHash, hashType)
+	return api.InstallUpdateWithHash(installerPath, autoRestart, expectedHash, hashType)
 }

 // VerifyUpdateFile 验证更新文件哈希值
 func (a *App) VerifyUpdateFile(filePath string, expectedHash string, hashType string) (map[string]interface{}, error) {
-	if a.updateAPI == nil {
-		return nil, fmt.Errorf("更新功能正在初始化中")
+	api, err := a.requireUpdateAPI()
+	if err != nil {
+		return nil, err
 	}
-	return a.updateAPI.VerifyUpdateFile(filePath, expectedHash, hashType)
+	return api.VerifyUpdateFile(filePath, expectedHash, hashType)
 }

 // startAutoUpdateCheck 启动自动更新检查
@@ -753,7 +642,7 @@ func (a *App) GetAuditLogs(limit int) ([]map[string]interface{}, error) {

 // GetFileServerURL 获取本地文件服务器的URL
 func (a *App) GetFileServerURL() string {
-	return "http://localhost:18765"
+	return "http://localhost:8073"
 }

 // DetectFileTypeByContent 通过文件内容检测文件类型（用于小文件）
@@ -848,8 +737,6 @@ func (a *App) handleNewlyEnabledModules(oldTabs, newTabs []string) {

 	for _, tab := range newlyEnabled {
 		switch tab {
-		case common.TabDatabase:
-			a.initDatabaseModule()
 		case common.TabFileSystem:
 			a.initFilesystemModule()
 		case common.TabDevice:
@@ -858,37 +745,6 @@ func (a *App) handleNewlyEnabledModules(oldTabs, newTabs []string) {
 	}
 }

-// initDatabaseModule 延迟初始化数据库模块
-func (a *App) initDatabaseModule() {
-	if a.connectionAPI != nil {
-		fmt.Println("[模块] 数据库模块已初始化，跳过")
-		return
-	}
-
-	fmt.Println("[模块] 延迟初始化数据库模块...")
-	var err error
-
-	// 初始化 ConnectionAPI
-	if a.connectionAPI, err = api.NewConnectionAPI(); err != nil {
-		fmt.Printf("[模块] 数据库模块初始化失败: %v\n", err)
-		return
-	}
-
-	// 初始化 SqlAPI
-	if a.sqlAPI, err = api.NewSqlAPI(); err != nil {
-		fmt.Printf("[模块] SqlAPI 初始化失败: %v\n", err)
-		return
-	}
-
-	// 初始化 TabAPI
-	if a.tabAPI, err = api.NewTabAPI(); err != nil {
-		fmt.Printf("[模块] TabAPI 初始化失败: %v\n", err)
-		return
-	}
-
-	fmt.Println("[模块] 数据库模块初始化完成")
-}
-
 // initFilesystemModule 延迟初始化文件系统模块
 func (a *App) initFilesystemModule() {
 	if a.filesystem != nil {
--- a/build/appicon.png
+++ b/build/appicon.png
--- a/build/publish/last-version.json
+++ b/build/publish/last-version.json
@@ -1 +1 @@
-{"version": "0.3.3", "release_date": "2026-04-13", "changelog": "### 新增 ✨\n- Markdown 编辑器: 独立编辑页面、实时预览、字符/行数统计、Ctrl+S 保存、自动保存\n- PDF 导出: 浏览器打印 + 后端 gofpdf/chromedp 多种导出方式\n- 窗口置顶 + 收藏夹置顶\n- Excel/Word 文件预览支持\n- 数据库 UI 大幅改进: 查询历史、查询模板、SQL 工具栏、结果导出\n- 数据库可见性过滤与连接管理增强\n\n### 优化 🚀\n- MySQL 动态连接池重构（健康检查、性能权重、自适应扩缩容）\n- SQL 查询优化器（查询缓存、慢查询日志）\n- Redis Pipeline 支持\n- Wails 框架升级 + FileListPanel 重写\n- CSV 编辑模式优化 + 拷贝功能优化\n\n### 修复 🐛\n- Office 类型检测修复、CORS 跨域修复、大文件卡死修复\n\n### 安全修复 🔒\n- XSS 防护、PDF 路径穿越防护、HTML 注入防护\n\n### 重构 🔧\n- CodeMirror 架构优化、大规模死代码清理(-1306行)", "download_url": "https://c.1216.top/download/u-desk-0.3.3.exe", "file_size": 18396672, "sha256": "f0bdf8954b276f4bb45a69336f171bb2a481f7a7125fc3309aae5de2fbf0cf15", "force_update": false}
+{"version": "0.4.0", "download_url": "https://c.1216.top/download/u-desk-0.4.0.exe", "changelog": "### 重构 🔧\n- 移除数据库客户端模块：删除全部 MySQL/Redis/MongoDB 相关代码（-17,885 行），应用专注文件管理\n- 清理依赖：移除 mysql/redis/mongo 驱动依赖\n- 构建体积优化：原始 exe 26MB，UPX 压缩后 7.5MB（压缩率 28.8%）\n\n### 变更说明\n- 顶部 Tab 仅保留「文件管理」，移除数据库入口\n- Markdown 编辑器、版本历史、系统信息、更新检查等模块不受影响", "force_update": false, "release_date": "2026-04-25", "file_size": 7766016}
--- a/build/publish/versions.json
+++ b/build/publish/versions.json
@@ -1 +1 @@
-{"updated_at": "2026-04-13T23:45:00+08:00", "versions": [{"version": "0.3.3", "release_date": "2026-04-13", "changelog": "### 新增 ✨\n- **Markdown 编辑器**: 独立编辑页面、实时预览、字符/行数统计、Ctrl+S 保存、自动保存\n- **Markdown 文件页面**: 独立的 Markdown 文件查看与编辑界面\n- **PDF 导出**: 浏览器打印 + 后端 gofpdf/chromedp 多种导出方式\n- **窗口置顶**: 支持窗口始终置顶\n- **收藏夹置顶**: 收藏项支持置顶排序\n- **文件预览**: Excel/Word 文件预览支持\n- **数据库 UI 大幅改进**: 查询历史面板、查询模板面板、SQL 工具栏、结果导出(CSV)、SQL 格式化器\n- **数据库可见性过滤**: 连接管理增强、ConnectionForm 重写、统一错误处理模块\n\n### 优化 🚀\n- MySQL 动态连接池重构 — 健康检查、性能权重、自适应扩缩容\n- SQL 查询优化器 — 查询缓存、慢查询日志 (762 行)\n- Redis Pipeline — 批量命令、事务 MULTI/EXEC 支持\n- Wails 框架升级 + Mermaid 主题切换 + 代码高亮修复\n- FileListPanel 重写 (+511 行) — 删除 FileItemRow，统一列表渲染逻辑\n- CSV 编辑模式优化 + PDF 导出重构\n- 拷贝功能优化 — 新增 ClipboardCopy composable\n\n### 修复 🐛\n- Office 文件预览：修复类型检测与二进制误判\n- 本地文件服务器 CORS 跨域问题\n- 大文件点击卡死问题\n- 收藏夹 bug 修复\n\n### 安全修复 🔒\n- XSS 防护（PdfExportButton、MarkdownPreview HTML 消毒）\n- PDF 导出路径穿越防护\n- PDF 导出标题 HTML 注入防护\n\n### 重构 🔧\n- CodeMirror 架构优化 — 统一导出避免多实例问题\n- 消除代码重复 — storage/connection_service 重构\n- **大规模死代码清理 (-1306 行)**: 删除废弃 storage 层、audit_log、file_lock、recycle_bin、useFileEdit.js(-369行)、useFilePreview.js(-603行) 等\n- 配置加载超时保护、正则表达式预编译、禁止 Ctrl+滚轮缩放", "download_url": "https://c.1216.top/download/u-desk-0.3.3.exe", "file_size": 18396672, "sha256": "f0bdf8954b276f4bb45a69336f171bb2a481f7a7125fc3309aae5de2fbf0cf15"}, {"version": "0.3.2", "release_date": "2026-02-05", "changelog": "### 重构 🔧\n- CodeMirror 架构优化 - 统一导出避免多实例问题\n- 语言加载器优化 - 从动态 import 改为静态导入\n- 动态主题切换 - 使用 Compartment 实现无损切换\n\n### 优化 🚀\n- 编辑器性能 - 添加内容更新防抖\n- 亮色主题 - 改进代码编辑器亮色模式样式", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.3.0", "release_date": "2026-02-04", "changelog": "### 新增 ✨\n- Markdown 图表支持 - Mermaid 流程图、时序图、类图等\n- 代码语法高亮 - 支持 20+ 种常用编程语言\n- 文件列表优化 - 文件夹优先显示，同类型按名称排序", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.2.0", "release_date": "2026-01-28", "changelog": "### 新增 ✨\n- 应用配置管理 - 全新设置面板，支持自定义显示模块和默认启动页\n- 智能更新提醒 - 新增版本更新通知组件\n- 模块重命名 - 应用更名为 u-desk", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.1.5", "release_date": "2026-01-22", "changelog": "### 新增 ✨\n- 文件管理模块 - 文件浏览、编辑、操作功能\n- 版本更新管理 - 自动检查和下载更新\n- 系统信息查询 - CPU、内存、磁盘等硬件信息", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.1.0", "release_date": "2026-01-18", "changelog": "### 新增 ✨\n- 数据库管理 - 支持多种数据库连接和查询功能", "download_url": "", "file_size": 0, "sha256": ""}]}
+{"updated_at": "2026-04-25T23:58:00+08:00", "versions": [{"version": "0.4.0", "release_date": "2026-04-25", "changelog": "### 重构 🔧\n- **移除数据库客户端模块**: 删除全部 MySQL/Redis/MongoDB 相关代码（-17,885 行），应用专注文件管理\n- **清理依赖**: 移除 go-sql-driver/mysql、go-redis/v9、mongo-driver/v2、gorm.io/driver/mysql 等驱动依赖\n- **构建体积优化**: 原始 exe 从 36MB 降至 26MB，UPX 压缩后仅 7.5MB（压缩率 28.8%）\n\n### 变更说明\n- 顶部 Tab 仅保留「文件管理」，移除数据库入口\n- Markdown 编辑器、版本历史、系统信息、更新检查等模块不受影响\n- 本地 SQLite 配置存储（AppConfig）保留不变", "download_url": "https://c.1216.top/download/u-desk-0.4.0.exe", "file_size": 7766016, "sha256": "532c30bdc57ea0ff5bc71756714b7ca18388ad3e09b2c4eefcdb6816349c7dda"}, {"version": "0.3.3", "release_date": "2026-04-13", "changelog": "### 新增 ✨\n- **Markdown 编辑器**: 独立编辑页面、实时预览、字符/行数统计、Ctrl+S 保存、自动保存\n- **Markdown 文件页面**: 独立的 Markdown 文件查看与编辑界面\n- **PDF 导出**: 浏览器打印 + 后端 gofpdf/chromedp 多种导出方式\n- **窗口置顶**: 支持窗口始终置顶\n- **收藏夹置顶**: 收藏项支持置顶排序\n- **文件预览**: Excel/Word 文件预览支持\n- **数据库 UI 大幅改进**: 查询历史面板、查询模板面板、SQL 工具栏、结果导出(CSV)、SQL 格式化器\n- **数据库可见性过滤**: 连接管理增强、ConnectionForm 重写、统一错误处理模块\n\n### 优化 🚀\n- MySQL 动态连接池重构 — 健康检查、性能权重、自适应扩缩容\n- SQL 查询优化器 — 查询缓存、慢查询日志 (762 行)\n- Redis Pipeline — 批量命令、事务 MULTI/EXEC 支持\n- Wails 框架升级 + Mermaid 主题切换 + 代码高亮修复\n- FileListPanel 重写 (+511 行) — 删除 FileItemRow，统一列表渲染逻辑\n- CSV 编辑模式优化 + PDF 导出重构\n- 拷贝功能优化 — 新增 ClipboardCopy composable\n\n### 修复 🐛\n- Office 文件预览：修复类型检测与二进制误判\n- 本地文件服务器 CORS 跨域问题\n- 大文件点击卡死问题\n- 收藏夹 bug 修复\n\n### 安全修复 🔒\n- XSS 防护（PdfExportButton、MarkdownPreview HTML 消毒）\n- PDF 导出路径穿越防护\n- PDF 导出标题 HTML 注入防护\n\n### 重构 🔧\n- CodeMirror 架构优化 — 统一导出避免多实例问题\n- 消除代码重复 — storage/connection_service 重构\n- **大规模死代码清理 (-1306 行)**: 删除废弃 storage 层、audit_log、file_lock、recycle_bin、useFileEdit.js(-369行)、useFilePreview.js(-603行) 等\n- 配置加载超时保护、正则表达式预编译、禁止 Ctrl+滚轮缩放", "download_url": "https://c.1216.top/download/u-desk-0.3.3.exe", "file_size": 9801728, "sha256": "829c79a91c10277011159749110f4ebee5e3638a078e86850c03b1c9f09e184c"}, {"version": "0.3.2", "release_date": "2026-02-05", "changelog": "### 重构 🔧\n- CodeMirror 架构优化 - 统一导出避免多实例问题\n- 语言加载器优化 - 从动态 import 改为静态导入\n- 动态主题切换 - 使用 Compartment 实现无损切换\n\n### 优化 🚀\n- 编辑器性能 - 添加内容更新防抖\n- 亮色主题 - 改进代码编辑器亮色模式样式", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.3.0", "release_date": "2026-02-04", "changelog": "### 新增 ✨\n- Markdown 图表支持 - Mermaid 流程图、时序图、类图等\n- 代码语法高亮 - 支持 20+ 种常用编程语言\n- 文件列表优化 - 文件夹优先显示，同类型按名称排序", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.2.0", "release_date": "2026-01-28", "changelog": "### 新增 ✨\n- 应用配置管理 - 全新设置面板，支持自定义显示模块和默认启动页\n- 智能更新提醒 - 新增版本更新通知组件\n- 模块重命名 - 应用更名为 u-desk", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.1.5", "release_date": "2026-01-22", "changelog": "### 新增 ✨\n- 文件管理模块 - 文件浏览、编辑、操作功能\n- 版本更新管理 - 自动检查和下载更新\n- 系统信息查询 - CPU、内存、磁盘等硬件信息", "download_url": "", "file_size": 0, "sha256": ""}, {"version": "0.1.0", "release_date": "2026-01-18", "changelog": "### 新增 ✨\n- 数据库管理 - 支持多种数据库连接和查询功能", "download_url": "", "file_size": 0, "sha256": ""}]}
--- a/build/windows/app-icon.png
+++ b/build/windows/app-icon.png
--- a/build/windows/convert-ico.ps1
+++ b/build/windows/convert-ico.ps1
@@ -0,0 +1,44 @@
+Add-Type -AssemblyName System.Drawing
+
+$srcPath = "E:\wk-lab\u-desk\build\windows\app-icon.png"
+$icoPath = "E:\wk-lab\u-desk\build\windows\icon.ico"
+$sizes = @(256, 128, 64, 48, 32, 16)
+
+$src = [System.Drawing.Image]::FromFile($srcPath)
+$fs = New-Object System.IO.FileStream($icoPath, [System.IO.FileMode]::Create)
+$w = New-Object System.IO.BinaryWriter($fs)
+
+$w.Write([uint16]0)
+$w.Write([uint16]1)
+$w.Write([uint16]$sizes.Count)
+
+foreach ($sz in $sizes) {
+    $bmp = New-Object System.Drawing.Bitmap($sz, $sz, [System.Drawing.Imaging.PixelFormat]::Format32bppArgb)
+    $g = [System.Drawing.Graphics]::FromImage($bmp)
+    $g.SmoothingMode = [System.Drawing.Drawing2D.SmoothingMode]::HighQuality
+    $g.InterpolationMode = [System.Drawing.Drawing2D.InterpolationMode]::HighQualityBicubic
+    $g.DrawImage($src, 0, 0, $sz, $sz)
+    $g.Dispose()
+
+    $ms = New-Object System.IO.MemoryStream
+    $bmp.Save($ms, [System.Drawing.Imaging.ImageFormat]::Png)
+    $bytes = $ms.ToArray()
+    $ms.Dispose()
+    $bmp.Dispose()
+
+    $w.Write([uint32]40)
+    $w.Write([int32]$sz)
+    $w.Write([int32]$sz)
+    $w.Write([uint16]1)
+    $w.Write([uint32]32)
+    $w.Write([uint32]$bytes.Length)
+    $w.Write([uint32]22)
+    $w.Write($bytes)
+}
+
+$w.Close()
+$fs.Close()
+$src.Dispose()
+
+$item = Get-Item $icoPath
+Write-Output "ICO: $($item.Name) ($([math]::Round($item.Length / 1KB)) KB)"
--- a/build/windows/icon.ico
+++ b/build/windows/icon.ico
--- a/build/windows/u-desk-icon.png
+++ b/build/windows/u-desk-icon.png
--- a/cmd/agent/clipboard_20260429_195256.png
+++ b/cmd/agent/clipboard_20260429_195256.png
--- a/cmd/agent/main.go
+++ b/cmd/agent/main.go
@@ -0,0 +1,105 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"u-desk/internal/agent/config"
+	agentmw "u-desk/internal/agent/middleware"
+	"u-desk/internal/agent/handler"
+	"u-desk/internal/filesystem"
+
+	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
+)
+
+func main() {
+	cfg, err := config.Load("configs/agent.yaml")
+	if err != nil {
+		log.Fatalf("[FATAL] 加载配置失败: %v", err)
+	}
+
+	fsConfig := filesystem.DefaultConfig()
+	fsSvc, err := filesystem.NewFileSystemService(fsConfig)
+	if err != nil {
+		log.Fatalf("[FATAL] 初始化文件服务失败: %v", err)
+	}
+
+	e := echo.New()
+	e.HideBanner = true
+	e.HidePort = true
+
+	e.Use(middleware.Recover())
+	e.Use(middleware.Logger())
+	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
+		AllowOrigins: cfg.CORS.AllowedOrigins,
+		AllowMethods: []string{echo.GET, echo.PUT, echo.POST, echo.DELETE, echo.PATCH, echo.OPTIONS},
+		AllowHeaders: []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAuthorization, echo.HeaderAccept},
+	}))
+	if cfg.Auth.Token != "" {
+		e.Use(agentmw.Auth(cfg.Auth.Token))
+	}
+
+	h := handler.New(fsSvc, cfg)
+
+	api := e.Group("/api/v1")
+	{
+		api.GET("/ping", h.Ping)
+		api.GET("/info", h.Info)
+
+		// 文件操作 — 所有通过 ?path= 参数传递路径
+		api.GET("/fs", h.ListOrStat)           // ?path=xxx [&action=stat]
+		api.GET("/fs/read", h.ReadFile)         // ?path=xxx
+		api.PUT("/fs/write", h.WriteFile)        // ?path=xxx & body={content}
+		api.POST("/fs/create", h.Create)          // ?path=xxx & body={type,name}
+		api.DELETE("/fs/delete", h.Delete)       // ?path=xxx
+		api.PATCH("/fs/rename", h.Rename)        // ?path=xxx & body={new_path}
+		api.POST("/fs/upload", h.Upload)         // ?path=xxx & body={content}
+		api.GET("/fs/detect", h.DetectType)      // ?path=xxx
+
+		sys := api.Group("/system")
+		{
+			sys.GET("/common-paths", h.CommonPaths)
+			sys.GET("/drives", h.Drives)
+		}
+
+		proxy := api.Group("/proxy")
+		{
+			proxy.GET("/localfs/*", h.FileServerProxy)
+			proxy.GET("/html-preview", h.HTMLPreviewProxy)
+		}
+	}
+
+	addr := fmt.Sprintf("%s:%d", cfg.Server.Host, cfg.Server.Port)
+	go func() {
+		log.Printf("[INFO] u-fs-agent 启动于 %s", addr)
+		if err := e.Start(addr); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("[FATAL] HTTP 服务器错误: %v", err)
+		}
+	}()
+
+	go func() {
+		if _, err := filesystem.StartLocalFileServer(); err != nil {
+			log.Printf("[WARN] 文件服务器启动失败（媒体预览不可用）: %v", err)
+		}
+	}()
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+	log.Println("[INFO] 正在关闭...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	filesystem.ShutdownLocalFileServer()
+	e.Shutdown(ctx)
+	fsSvc.Close(ctx)
+	log.Println("[INFO] 已关闭")
+}
--- a/cmd/debug_db/main.go
+++ b/cmd/debug_db/main.go
@@ -1,73 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-
-	"u-desk/internal/storage"
-	"u-desk/internal/storage/models"
-)
-
-func main() {
-	// 初始化数据库
-	db, err := storage.Init()
-	if err != nil {
-		log.Fatalf("数据库初始化失败: %v", err)
-	}
-
-	fmt.Println("=== 数据库连接配置调试工具 ===")
-	fmt.Println()
-
-	// 列出所有连接
-	var connections []models.DbConnection
-	result := db.Order("id").Find(&connections)
-	if result.Error != nil {
-		log.Fatalf("查询失败: %v", result.Error)
-	}
-
-	fmt.Printf("当前有 %d 个连接配置:\n", len(connections))
-	fmt.Println()
-
-	for _, conn := range connections {
-		fmt.Printf("ID: %d\n", conn.ID)
-		fmt.Printf("  名称: %s\n", conn.Name)
-		fmt.Printf("  类型: %s\n", conn.Type)
-		fmt.Printf("  主机: %s:%d\n", conn.Host, conn.Port)
-		fmt.Printf("  用户名: %s\n", conn.Username)
-		fmt.Printf("  创建时间: %s\n", conn.CreatedAt.Format("2006-01-02 15:04:05"))
-		fmt.Println()
-	}
-
-	// 询问用户操作
-	var choice int
-	fmt.Print("请选择操作:\n")
-	fmt.Print("1. 删除指定 ID 的连接\n")
-	fmt.Print("2. 列出连接详情\n")
-	fmt.Print("0. 退出\n")
-	fmt.Print("请输入: ")
-	fmt.Scanln(&choice)
-
-	if choice == 1 {
-		var id uint
-		fmt.Print("请输入要删除的连接 ID: ")
-		fmt.Scanln(&id)
-
-		// 确认
-		var confirm string
-		fmt.Printf("确认删除 ID=%d 的连接吗？(y/N): ", id)
-		fmt.Scanln(&confirm)
-
-		if confirm == "y" || confirm == "Y" {
-			result := db.Delete(&models.DbConnection{}, id)
-			if result.Error != nil {
-				log.Printf("删除失败: %v", result.Error)
-			} else {
-				fmt.Printf("删除成功！影响行数: %d\n", result.RowsAffected)
-			}
-		} else {
-			fmt.Println("已取消删除")
-		}
-	}
-
-	fmt.Println("\n工具退出")
-}
--- a/configs/agent.yaml
+++ b/configs/agent.yaml
@@ -0,0 +1,29 @@
+# u-fs-agent 配置文件
+# 部署到远端服务器后修改此文件
+
+server:
+  port: 9876                # 监听端口
+  host: "0.0.0.0"          # 监听地址
+
+auth:
+  token: ""                 # API Token（留空则不验证，生产环境必须设置）
+  # 生成随机 token: openssl rand -hex 32
+
+cors:
+  allowed_origins:
+    - "*"                   # 开发模式允许所有来源
+  # 生产环境建议限定:
+  # - "http://localhost:5173"
+  # - "http://localhost:5174"
+
+log:
+  level: "info"             # debug / info / warn / error
+  format: "json"            # json / text
+
+file_server:
+  port: 8073                # 内置文件服务器端口（用于媒体预览代理）
+  max_file_size: 524288000  # 最大文件大小 500MB
+
+security:
+  allow_symlinks: false     # 是否允许符号链接
+  check_system_paths: true  # 检查系统关键目录
--- a/go.mod
+++ b/go.mod
@@ -6,24 +6,19 @@ require (
 	github.com/chromedp/cdproto v0.0.0-20250724212937-08a3db8b4327
 	github.com/chromedp/chromedp v0.14.2
 	github.com/glebarez/sqlite v1.11.0
-	github.com/go-sql-driver/mysql v1.9.3
-	github.com/redis/go-redis/v9 v9.17.3
+	github.com/labstack/echo/v4 v4.15.0
 	github.com/shirou/gopsutil/v3 v3.24.5
 	github.com/wailsapp/wails/v2 v2.12.0
 	github.com/yuin/goldmark v1.8.2
-	go.mongodb.org/mongo-driver/v2 v2.5.0
 	golang.org/x/sys v0.40.0
-	gorm.io/driver/mysql v1.6.0
+	gopkg.in/yaml.v3 v3.0.1
 	gorm.io/gorm v1.31.1
 )

 require (
-	filippo.io/edwards25519 v1.1.0 // indirect
 	git.sr.ht/~jackmordaunt/go-toast/v2 v2.0.3 // indirect
 	github.com/bep/debounce v1.2.1 // indirect
-	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/chromedp/sysutil v1.1.0 // indirect
-	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/glebarez/go-sqlite v1.22.0 // indirect
 	github.com/go-json-experiment/json v0.0.0-20250725192818-e39067aee2d2 // indirect
@@ -37,8 +32,6 @@ require (
 	github.com/jchv/go-winloader v0.0.0-20250406163304-c1995be93bd1 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
-	github.com/klauspost/compress v1.18.3 // indirect
-	github.com/labstack/echo/v4 v4.15.0 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect
 	github.com/leaanthony/go-ansi-parser v1.6.1 // indirect
 	github.com/leaanthony/gosod v1.0.4 // indirect
@@ -62,16 +55,12 @@ require (
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/wailsapp/go-webview2 v1.0.23 // indirect
 	github.com/wailsapp/mimetype v1.4.1 // indirect
-	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
-	github.com/xdg-go/scram v1.2.0 // indirect
-	github.com/xdg-go/stringprep v1.0.4 // indirect
-	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	golang.org/x/crypto v0.47.0 // indirect
 	golang.org/x/exp v0.0.0-20260112195511-716be5621a96 // indirect
 	golang.org/x/net v0.49.0 // indirect
-	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/text v0.33.0 // indirect
+	golang.org/x/time v0.14.0 // indirect
 	modernc.org/libc v1.67.7 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
--- a/go.sum
+++ b/go.sum
@@ -1,15 +1,7 @@
-filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
-filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 git.sr.ht/~jackmordaunt/go-toast/v2 v2.0.3 h1:N3IGoHHp9pb6mj1cbXbuaSXV/UMKwmbKLf53nQmtqMA=
 git.sr.ht/~jackmordaunt/go-toast/v2 v2.0.3/go.mod h1:QtOLZGz8olr4qH2vWK0QH0w0O4T9fEIjMuWpKUsH7nc=
 github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
 github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
-github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
-github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
-github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
-github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
-github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
-github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chromedp/cdproto v0.0.0-20250724212937-08a3db8b4327 h1:UQ4AU+BGti3Sy/aLU8KVseYKNALcX9UXY6DfpwQ6J8E=
 github.com/chromedp/cdproto v0.0.0-20250724212937-08a3db8b4327/go.mod h1:NItd7aLkcfOA/dcMXvl8p1u+lQqioRMq/SqDp71Pb/k=
 github.com/chromedp/chromedp v0.14.2 h1:r3b/WtwM50RsBZHMUm9fsNhhzRStTHrKdr2zmwbZSzM=
@@ -18,8 +10,6 @@ github.com/chromedp/sysutil v1.1.0 h1:PUFNv5EcprjqXZD9nJb9b/c9ibAbxiYo4exNWZyipw
 github.com/chromedp/sysutil v1.1.0/go.mod h1:WiThHUdltqCNKGc4gaU50XgYjwjYIhKWoHGPTUfWTJ8=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
-github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/glebarez/go-sqlite v1.22.0 h1:uAcMJhaA6r3LHMTFgP0SifzgXg46yJkgxqyuyec+ruQ=
@@ -31,8 +21,6 @@ github.com/go-json-experiment/json v0.0.0-20250725192818-e39067aee2d2/go.mod h1:
 github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
 github.com/go-ole/go-ole v1.3.0 h1:Dt6ye7+vXGIKZ7Xtk4s6/xVdGDQynvom7xCFEdWr6uE=
 github.com/go-ole/go-ole v1.3.0/go.mod h1:5LS6F96DhAwUc7C+1HLexzMXY1xGRSryjyPPKW6zv78=
-github.com/go-sql-driver/mysql v1.9.3 h1:U/N249h2WzJ3Ukj8SowVFjdtZKfu9vlLZxjPXV1aweo=
-github.com/go-sql-driver/mysql v1.9.3/go.mod h1:qn46aNg1333BRMNU69Lq93t8du/dwxI64Gl8i5p1WMU=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
 github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
@@ -57,8 +45,6 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
-github.com/klauspost/compress v1.18.3 h1:9PJRvfbmTabkOX8moIpXPbMMbYN60bWImDDU7L+/6zw=
-github.com/klauspost/compress v1.18.3/go.mod h1:R0h/fSBs8DE4ENlcrlib3PsXS61voFxhIs2DeRhCvJ4=
 github.com/labstack/echo/v4 v4.15.0 h1:hoRTKWcnR5STXZFe9BmYun9AMTNeSbjHi2vtDuADJ24=
 github.com/labstack/echo/v4 v4.15.0/go.mod h1:xmw1clThob0BSVRX1CRQkGQ/vjwcpOMjQZSZa9fKA/c=
 github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=
@@ -96,8 +82,6 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 h1:o4JXh1EVt9k/+g42oCprj/FisM4qX9L3sZB3upGN2ZU=
 github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55/go.mod h1:OmDBASR4679mdNQnz2pUhc2G8CO2JrUAVFDRBDP/hJE=
-github.com/redis/go-redis/v9 v9.17.3 h1:fN29NdNrE17KttK5Ndf20buqfDZwGNgoUr9qjl1DQx4=
-github.com/redis/go-redis/v9 v9.17.3/go.mod h1:u410H11HMLoB+TP67dz8rL9s6QW2j76l0//kSOd3370=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
@@ -129,72 +113,43 @@ github.com/wailsapp/mimetype v1.4.1 h1:pQN9ycO7uo4vsUUuPeHEYoUkLVkaRntMnHJxVwYhw
 github.com/wailsapp/mimetype v1.4.1/go.mod h1:9aV5k31bBOv5z6u+QP8TltzvNGJPmNJD4XlAL3U+j3o=
 github.com/wailsapp/wails/v2 v2.12.0 h1:BHO/kLNWFHYjCzucxbzAYZWUjub1Tvb4cSguQozHn5c=
 github.com/wailsapp/wails/v2 v2.12.0/go.mod h1:mo1bzK1DEJrobt7YrBjgxvb5Sihb1mhAY09hppbibQg=
-github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
-github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
-github.com/xdg-go/scram v1.2.0 h1:bYKF2AEwG5rqd1BumT4gAnvwU/M9nBp2pTSxeZw7Wvs=
-github.com/xdg-go/scram v1.2.0/go.mod h1:3dlrS0iBaWKYVt2ZfA4cj48umJZ+cAEbR6/SjLA88I8=
-github.com/xdg-go/stringprep v1.0.4 h1:XLI/Ng3O1Atzq0oBs3TWm+5ZVgkq2aqdlvP9JtoZ6c8=
-github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
-github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 h1:ilQV1hzziu+LLM3zUTJ0trRztfwgjqKnBWNtSRkbmwM=
-github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78/go.mod h1:aL8wCCfTfSfmXjznFBSZNN13rSJjlIOI1fUNAtF7rmI=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/yuin/goldmark v1.8.2 h1:kEGpgqJXdgbkhcOgBxkC0X0PmoPG1ZyoZ117rDVp4zE=
 github.com/yuin/goldmark v1.8.2/go.mod h1:ip/1k0VRfGynBgxOz0yCqHrbZXhcjxyuS66Brc7iBKg=
 github.com/yusufpapurcu/wmi v1.2.4 h1:zFUKzehAFReQwLys1b/iSMl+JQGSCSjtVqQn9bBrPo0=
 github.com/yusufpapurcu/wmi v1.2.4/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
-go.mongodb.org/mongo-driver/v2 v2.5.0 h1:yXUhImUjjAInNcpTcAlPHiT7bIXhshCTL3jVBkF3xaE=
-go.mongodb.org/mongo-driver/v2 v2.5.0/go.mod h1:yOI9kBsufol30iFsl1slpdq1I0eHPzybRWdyYUs8K/0=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.47.0 h1:V6e3FRj+n4dbpw86FJ8Fv7XVOql7TEwpHapKoMJ/GO8=
 golang.org/x/crypto v0.47.0/go.mod h1:ff3Y9VzzKbwSSEzWqJsJVBnWmRwRSHt/6Op5n9bQc4A=
 golang.org/x/exp v0.0.0-20260112195511-716be5621a96 h1:Z/6YuSHTLOHfNFdb8zVZomZr7cqNgTJvA8+Qz75D8gU=
 golang.org/x/exp v0.0.0-20260112195511-716be5621a96/go.mod h1:nzimsREAkjBCIEFtHiYkrJyT+2uy9YZJB7H1k68CXZU=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.32.0 h1:9F4d3PHLljb6x//jOyokMv3eX+YDeepZSEo3mFJy93c=
 golang.org/x/mod v0.32.0/go.mod h1:SgipZ/3h2Ci89DlEtEXWUk/HteuRin+HHhN+WbNhguU=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
 golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
 golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200810151505-1b9f1253b3ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
 golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.33.0 h1:B3njUFyqtHDUI5jMn1YIr5B0IE2U0qck04r6d4KPAxE=
 golang.org/x/text v0.33.0/go.mod h1:LuMebE6+rBincTi9+xWTY8TztLzKHc/9C1uBCG27+q8=
+golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
+golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
 golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gorm.io/driver/mysql v1.6.0 h1:eNbLmNTpPpTOVZi8MMxCi2aaIm0ZpInbORNXDwyLGvg=
-gorm.io/driver/mysql v1.6.0/go.mod h1:D/oCC2GWK3M/dqoLxnOlaNKmXz8WNTfcS9y5ovaSqKo=
 gorm.io/gorm v1.31.1 h1:7CA8FTFz/gRfgqgpeKIBcervUn3xSyPUmr6B2WXJ7kg=
 gorm.io/gorm v1.31.1/go.mod h1:XyQVbO2k6YkOis7C2437jSit3SsDK72s7n7rsSHd+Gs=
 modernc.org/cc/v4 v4.27.1 h1:9W30zRlYrefrDV2JE2O8VDtJ1yPGownxciz5rrbQZis=
--- a/internal/agent/config/config.go
+++ b/internal/agent/config/config.go
@@ -0,0 +1,108 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+type Config struct {
+	Server      ServerConfig      `yaml:"server"`
+	Auth        AuthConfig        `yaml:"auth"`
+	CORS        CORSConfig        `yaml:"cors"`
+	Log         LogConfig         `yaml:"log"`
+	FileServer FileServerConfig  `yaml:"file_server"`
+	Security    SecurityConfig    `yaml:"security"`
+}
+
+type ServerConfig struct {
+	Port int    `yaml:"port"`
+	Host string `yaml:"host"`
+}
+
+type AuthConfig struct {
+	Token string `yaml:"token"`
+}
+
+type CORSConfig struct {
+	AllowedOrigins []string `yaml:"allowed_origins"`
+}
+
+type LogConfig struct {
+	Level  string `yaml:"level"`
+	Format string `yaml:"format"`
+}
+
+type FileServerConfig struct {
+	Port       int   `yaml:"port"`
+	MaxFileSize int64 `yaml:"max_file_size"`
+}
+
+type SecurityConfig struct {
+	AllowSymlinks    bool `yaml:"allow_symlinks"`
+	CheckSystemPaths bool `yaml:"check_system_paths"`
+}
+
+// FileServerAddr 返回文件服务器的完整地址
+func (c *Config) FileServerAddr() string {
+	return fmt.Sprintf("http://localhost:%d", c.FileServer.Port)
+}
+
+func Load(path string) (*Config, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		// 配置文件不存在时使用默认值
+		if os.IsNotExist(err) {
+			return Default(), nil
+		}
+		return nil, err
+	}
+
+	cfg := Default()
+	if err := yaml.Unmarshal(data, cfg); err != nil {
+		return nil, err
+	}
+
+	// 清理 origins 中的空格并去重
+	seen := make(map[string]bool, len(cfg.CORS.AllowedOrigins))
+	uniques := cfg.CORS.AllowedOrigins[:0]
+	for _, origin := range cfg.CORS.AllowedOrigins {
+		o := strings.TrimSpace(origin)
+		if o != "" && !seen[o] {
+			seen[o] = true
+			uniques = append(uniques, o)
+		}
+	}
+	cfg.CORS.AllowedOrigins = uniques
+
+	return cfg, nil
+}
+
+func Default() *Config {
+	return &Config{
+		Server: ServerConfig{
+			Port: 9876,
+			Host: "0.0.0.0",
+		},
+		Auth: AuthConfig{
+			Token: "",
+		},
+		CORS: CORSConfig{
+			AllowedOrigins: []string{"*"},
+		},
+		Log: LogConfig{
+			Level:  "info",
+			Format: "json",
+		},
+		FileServer: FileServerConfig{
+			Port:        8073,
+			MaxFileSize: 500 * 1024 * 1024,
+		},
+		Security: SecurityConfig{
+			AllowSymlinks:    false,
+			CheckSystemPaths: true,
+		},
+	}
+}
--- a/internal/agent/handler/file_handler.go
+++ b/internal/agent/handler/file_handler.go
@@ -0,0 +1,176 @@
+package handler
+
+import (
+	"net/http"
+	"path/filepath"
+	"strings"
+
+	"u-desk/internal/agent/model"
+	"u-desk/internal/filesystem"
+
+	"github.com/labstack/echo/v4"
+)
+
+type writeFileReq struct {
+	Content string `json:"content"`
+}
+
+type createReq struct {
+	Type string `json:"type"` // "file" or "dir"
+	Name string `json:"name"`
+}
+
+type renameReq struct {
+	NewPath string `json:"new_path"`
+}
+
+type uploadReq struct {
+	Content string `json:"content"` // base64 编码内容
+}
+
+// ListOrStat 列出目录或获取文件信息（?get=stat 时返回单文件信息）
+func (h *Handler) ListOrStat(c echo.Context) error {
+	path := getPath(c)
+	action := c.QueryParam("get")
+
+	if action == "stat" {
+		info, err := h.fsSvc.GetFileInfo(path)
+		if err != nil {
+			return c.JSON(http.StatusOK, model.NotFound(err.Error()))
+		}
+		return c.JSON(http.StatusOK, model.OK(info))
+	}
+
+	files, err := h.fsSvc.ListDir(path)
+	if err != nil {
+		return c.JSON(http.StatusOK, model.InternalError(err.Error()))
+	}
+	// 限制返回数量，避免大目录导致前端卡顿
+	limit := c.QueryParam("limit")
+	if limit != "" {
+		n := 0
+		for i, f := range files {
+			if n >= 500 { // 硬限制 500 条
+				break
+			}
+			files[i] = f
+			n++
+		}
+		files = files[:n]
+	}
+	return c.JSON(http.StatusOK, model.OK(files))
+}
+
+// ReadFile 读取文件文本内容
+func (h *Handler) ReadFile(c echo.Context) error {
+	path := getPath(c)
+	content, err := h.fsSvc.ReadFile(path)
+	if err != nil {
+		return c.JSON(http.StatusOK, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.OK(map[string]string{
+		"content": content,
+	}))
+}
+
+// WriteFile 写入文件文本内容
+func (h *Handler) WriteFile(c echo.Context) error {
+	path := getPath(c)
+	var req writeFileReq
+	if err := c.Bind(&req); err != nil {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("无效请求体"))
+	}
+	if err := h.fsSvc.WriteFile(path, req.Content); err != nil {
+		return c.JSON(http.StatusInternalServerError, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.NoContent())
+}
+
+// Create 创建文件或目录
+func (h *Handler) Create(c echo.Context) error {
+	parentPath := getPath(c)
+	var req createReq
+	if err := c.Bind(&req); err != nil {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("无效请求体"))
+	}
+
+	req.Name = strings.TrimSpace(req.Name)
+	if req.Name == "" {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("名称不能为空"))
+	}
+
+	var result *filesystem.FileOperationResult
+	var err error
+
+	fullPath := filepath.Join(parentPath, req.Name)
+
+	switch req.Type {
+	case "dir":
+		result, err = h.fsSvc.CreateDir(fullPath)
+	default:
+		result, err = h.fsSvc.CreateFile(fullPath)
+	}
+
+	if err != nil {
+		return c.JSON(http.StatusInternalServerError, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusCreated, model.OK(result))
+}
+
+// Delete 删除文件或目录
+func (h *Handler) Delete(c echo.Context) error {
+	path := getPath(c)
+	result, err := h.fsSvc.DeletePath(path)
+	if err != nil {
+		return c.JSON(http.StatusInternalServerError, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.OK(result))
+}
+
+// Rename 重命名文件或目录
+func (h *Handler) Rename(c echo.Context) error {
+	oldPath := getPath(c)
+	var req renameReq
+	if err := c.Bind(&req); err != nil {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("无效请求体"))
+	}
+	req.NewPath = strings.TrimSpace(req.NewPath)
+	if req.NewPath == "" {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("新路径不能为空"))
+	}
+	cleanNew := filepath.Clean(req.NewPath)
+	if strings.Contains(cleanNew, "..") {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("新路径不允许包含 .."))
+	}
+	result, err := h.fsSvc.RenamePath(oldPath, cleanNew)
+	if err != nil {
+		return c.JSON(http.StatusInternalServerError, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.OK(result))
+}
+
+// Upload 上传 Base64 编码的二进制文件
+func (h *Handler) Upload(c echo.Context) error {
+	path := getPath(c)
+	var req uploadReq
+	if err := c.Bind(&req); err != nil {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("无效请求体"))
+	}
+	if req.Content == "" {
+		return c.JSON(http.StatusBadRequest, model.BadRequest("内容不能为空"))
+	}
+	if err := h.fsSvc.SaveBase64File(path, req.Content); err != nil {
+		return c.JSON(http.StatusInternalServerError, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.NoContent())
+}
+
+// DetectType 通过文件内容检测类型
+func (h *Handler) DetectType(c echo.Context) error {
+	path := getPath(c)
+	info, err := h.fsSvc.DetectFileTypeByContent(path)
+	if err != nil {
+		return c.JSON(http.StatusOK, model.InternalError(err.Error()))
+	}
+	return c.JSON(http.StatusOK, model.OK(info))
+}
--- a/internal/agent/handler/handler.go
+++ b/internal/agent/handler/handler.go
@@ -0,0 +1,37 @@
+package handler
+
+import (
+	"net/http/httputil"
+	"net/url"
+	"path/filepath"
+
+	"u-desk/internal/agent/config"
+	"u-desk/internal/filesystem"
+
+	"github.com/labstack/echo/v4"
+)
+
+type Handler struct {
+	fsSvc     *filesystem.FileSystemService
+	cfg       *config.Config
+	fileProxy *httputil.ReverseProxy
+}
+
+func New(fsSvc *filesystem.FileSystemService, cfg *config.Config) *Handler {
+	fileTarget, _ := url.Parse(cfg.FileServerAddr() + "/localfs/")
+	return &Handler{
+		fsSvc:     fsSvc,
+		cfg:       cfg,
+		fileProxy: httputil.NewSingleHostReverseProxy(fileTarget),
+	}
+}
+
+// getPath 从 query 参数提取并规范化文件路径
+func getPath(c echo.Context) string {
+	raw := c.QueryParam("path")
+	if raw == "" {
+		return ""
+	}
+	// URL 已被 Echo 自动 decode，只需转换路径分隔符
+	return filepath.FromSlash(raw)
+}
--- a/internal/agent/handler/server_handler.go
+++ b/internal/agent/handler/server_handler.go
@@ -0,0 +1,64 @@
+package handler
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"path/filepath"
+	"strings"
+
+	"github.com/labstack/echo/v4"
+)
+
+// FileServerProxy 反向代理到内置文件服务器（用于媒体预览）
+func (h *Handler) FileServerProxy(c echo.Context) error {
+	rawPath := c.Param("*")
+	if rawPath == "" {
+		return c.String(http.StatusBadRequest, "缺少文件路径")
+	}
+
+	clean := filepath.Clean(rawPath)
+	if strings.Contains(clean, "..") {
+		return c.String(http.StatusForbidden, "路径不允许包含 ..")
+	}
+
+	// 防止多重 /localfs/ 前缀（循环去除所有）
+	targetPath := filepath.ToSlash(clean)
+	for strings.HasPrefix(targetPath, "localfs/") || strings.HasPrefix(targetPath, "localfs\\") {
+		targetPath = strings.TrimPrefix(targetPath, "localfs/")
+		targetPath = strings.TrimPrefix(targetPath, "localfs\\")
+	}
+	c.Request().URL.Path = "/localfs/" + targetPath
+	h.fileProxy.ServeHTTP(c.Response(), c.Request())
+	return nil
+}
+
+// HTMLPreviewProxy 代理 HTML 预览请求（直连内部服务器，避免 ReverseProxy 路径拼接问题）
+func (h *Handler) HTMLPreviewProxy(c echo.Context) error {
+	rawPath := c.QueryParam("path")
+	if rawPath == "" {
+		return c.String(http.StatusBadRequest, "缺少 path 参数")
+	}
+	clean := filepath.Clean(rawPath)
+	if strings.Contains(clean, "..") {
+		return c.String(http.StatusForbidden, "路径不允许包含 ..")
+	}
+	theme := c.QueryParam("theme")
+
+	targetURL := fmt.Sprintf("http://localhost:8073/localfs/html-preview?path=%s&theme=%s",
+		url.QueryEscape(clean), url.QueryEscape(theme))
+
+	resp, err := http.Get(targetURL)
+	if err != nil {
+		return c.String(http.StatusBadGateway, "内部服务器不可用")
+	}
+	defer resp.Body.Close()
+
+	for k, v := range resp.Header {
+		c.Response().Header()[k] = v
+	}
+	c.Response().WriteHeader(resp.StatusCode)
+	io.Copy(c.Response(), resp.Body)
+	return nil
+}
--- a/internal/agent/handler/system_handler.go
+++ b/internal/agent/handler/system_handler.go
@@ -0,0 +1,113 @@
+package handler
+
+import (
+	"net/http"
+	"os"
+	"runtime"
+	"strings"
+
+	"u-desk/internal/agent/model"
+
+	"github.com/labstack/echo/v4"
+)
+
+// Ping 健康检查
+func (h *Handler) Ping(c echo.Context) error {
+	return c.JSON(http.StatusOK, model.OK(map[string]string{
+		"status": "ok",
+	}))
+}
+
+// Info 返回 Agent 信息
+func (h *Handler) Info(c echo.Context) error {
+	hostname, _ := os.Hostname()
+	return c.JSON(http.StatusOK, model.OK(map[string]interface{}{
+		"version":  "0.1.0",
+		"os":       runtime.GOOS,
+		"arch":     runtime.GOARCH,
+		"hostname": hostname,
+	}))
+}
+
+// CommonPaths 返回常用系统路径
+func (h *Handler) CommonPaths(c echo.Context) error {
+	paths := map[string]string{}
+
+	home, _ := os.UserHomeDir()
+	if home != "" {
+		paths["home"] = home
+		paths["desktop"] = home + "/Desktop"
+		paths["documents"] = home + "/Documents"
+		paths["downloads"] = home + "/Downloads"
+	}
+
+	// 根据平台添加盘符/根路径
+	if runtime.GOOS == "windows" {
+		for _, drive := range "ABCDEFGHIJKLMNOPQRSTUVWXYZ" {
+			_, err := os.Stat(string(drive) + ":\\")
+			if err == nil {
+				paths["drive_"+strings.ToLower(string(drive))] = string(drive) + ":\\"
+			}
+		}
+	} else {
+		paths["root"] = "/"
+		_, err := os.Stat("/home")
+		if err == nil {
+			paths["users"] = "/home"
+		}
+	}
+
+	return c.JSON(http.StatusOK, model.OK(paths))
+}
+
+// Drives 返回可用磁盘列表
+func (h *Handler) Drives(c echo.Context) error {
+	type DriveInfo struct {
+		Name    string `json:"name"`
+		Path    string `json:"path"`
+		FsType  string `json:"fs_type,omitempty"`
+		Total   uint64 `json:"total"`
+		Free    uint64 `json:"free"`
+	}
+
+	var drives []DriveInfo
+
+	if runtime.GOOS == "windows" {
+		for _, drive := range "ABCDEFGHIJKLMNOPQRSTUVWXYZ" {
+			drivePath := string(drive) + ":\\"
+			if _, err := os.Stat(drivePath); err != nil {
+				continue
+			}
+			drives = append(drives, DriveInfo{
+				Name: strings.ToLower(string(drive)),
+				Path: drivePath,
+				Total: 0,
+				Free:  0,
+			})
+		}
+	} else {
+		parts, err := os.ReadDir("/")
+		if err == nil {
+			for _, p := range parts {
+				name := p.Name()
+				if len(name) == 2 && name[0] != '.' && name[1] != '.' && p.IsDir() {
+					// 可能是挂载点
+					fullPath := "/" + name
+					if stat, err := os.Stat(fullPath); err == nil && stat.IsDir() {
+						drives = append(drives, DriveInfo{
+							Name: name,
+							Path: fullPath,
+						})
+						_ = stat
+					}
+				}
+			}
+		}
+		// 至少返回根目录
+		if len(drives) == 0 {
+			drives = append(drives, DriveInfo{Name: "/", Path: "/"})
+		}
+	}
+
+	return c.JSON(http.StatusOK, model.OK(drives))
+}
--- a/internal/agent/middleware/auth.go
+++ b/internal/agent/middleware/auth.go
@@ -0,0 +1,61 @@
+package middleware
+
+import (
+	"crypto/subtle"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/labstack/echo/v4"
+)
+
+const cookieName = "fs_token"
+
+func Auth(token string) echo.MiddlewareFunc {
+	if token == "" {
+		return func(next echo.HandlerFunc) echo.HandlerFunc {
+			return func(c echo.Context) error {
+				return next(c)
+			}
+		}
+	}
+
+	return func(next echo.HandlerFunc) echo.HandlerFunc {
+		return func(c echo.Context) error {
+			// 1. Authorization header（API 调用，首选）
+			auth := c.Request().Header.Get("Authorization")
+			if len(auth) >= 7 && strings.HasPrefix(auth, "Bearer ") &&
+				subtle.ConstantTimeCompare([]byte(auth[7:]), []byte(token)) == 1 {
+				setAuthCookie(c, token)
+				return next(c)
+			}
+			// 2. Cookie（<img>/<video> 等浏览器自动携带）
+			if ck, err := c.Cookie(cookieName); err == nil &&
+				subtle.ConstantTimeCompare([]byte(ck.Value), []byte(token)) == 1 {
+				return next(c)
+			}
+			// 3. 查询参数（兼容旧版，可后续移除）
+			if qt := c.QueryParam("token"); qt != "" &&
+				subtle.ConstantTimeCompare([]byte(qt), []byte(token)) == 1 {
+				setAuthCookie(c, token)
+				return next(c)
+			}
+			return c.JSON(http.StatusUnauthorized, map[string]string{
+				"error": "unauthorized",
+			})
+		}
+	}
+}
+
+// setAuthCookie 首次认证成功后设置 Cookie（供 <img> 等浏览器请求自动携带）
+func setAuthCookie(c echo.Context, token string) {
+	c.SetCookie(&http.Cookie{
+		Name:     cookieName,
+		Value:    token,
+		Path:     "/",
+		MaxAge:   int(24 * time.Hour / time.Second),
+		HttpOnly: true,
+		Secure:   c.Request().TLS != nil,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
--- a/internal/agent/model/response.go
+++ b/internal/agent/model/response.go
@@ -0,0 +1,41 @@
+package model
+
+import "net/http"
+
+type Response struct {
+	Code    int         `json:"code"`
+	Data    interface{} `json:"data,omitempty"`
+	Message string      `json:"message,omitempty"`
+}
+
+func OK(data interface{}) Response {
+	return Response{Code: http.StatusOK, Data: data}
+}
+
+func Created(data interface{}) Response {
+	return Response{Code: http.StatusCreated, Data: data}
+}
+
+func NoContent() Response {
+	return Response{Code: http.StatusNoContent}
+}
+
+func BadRequest(msg string) Response {
+	return Response{Code: http.StatusBadRequest, Message: msg}
+}
+
+func Unauthorized(msg string) Response {
+	return Response{Code: http.StatusUnauthorized, Message: msg}
+}
+
+func Forbidden(msg string) Response {
+	return Response{Code: http.StatusForbidden, Message: msg}
+}
+
+func NotFound(msg string) Response {
+	return Response{Code: http.StatusNotFound, Message: msg}
+}
+
+func InternalError(msg string) Response {
+	return Response{Code: http.StatusInternalServerError, Message: msg}
+}
--- a/internal/api/config_api.go
+++ b/internal/api/config_api.go
@@ -136,40 +136,66 @@ func (api *ConfigAPI) SaveAppConfig(req SaveAppConfigRequest) (map[string]interf
 	}, nil
 }

-// MigrateTabConfig 迁移旧配置
+// MigrateTabConfig 迁移旧配置（device 移除 + openclaw-manager 重命名）
 func (api *ConfigAPI) MigrateTabConfig() error {
 	config, _ := api.configService.GetTabConfig()
 	if config == nil {
 		return nil
 	}

-	// 检查是否包含 device
-	hasDevice := false
+	needMigrate := false
+
+	// 检查是否包含需要迁移的旧 key
 	for _, tab := range config.AvailableTabs {
-		if tab.Key == "device" {
-			hasDevice = true
+		if tab.Key == "device" || tab.Key == "openclaw-manager" {
+			needMigrate = true
 			break
 		}
 	}
-	if !hasDevice {
+	if !needMigrate {
 		return nil
 	}

-	// 过滤掉 device
+	// 映射：旧 key → 新 key（不需要的移除）
+	keyMap := map[string]string{
+		"openclaw-manager": "version",
+		// "device": ""  // 直接过滤
+	}
+
 	newTabs := make([]service.TabDefinition, 0, len(config.AvailableTabs))
 	newVisible := make([]string, 0, len(config.VisibleTabs))
+	seenKeys := map[string]bool{}
+
 	for _, tab := range config.AvailableTabs {
-		if tab.Key != "device" {
+		newKey, shouldRename := keyMap[tab.Key]
+		if shouldRename {
+			if newKey == "" {
+				continue // 移除（如 device）
+			}
+			if seenKeys[newKey] {
+				continue // 避免重复
+			}
+			seenKeys[newKey] = true
+			newTabs = append(newTabs, service.TabDefinition{Key: newKey, Title: tab.Title, Enabled: tab.Enabled})
+		} else {
 			newTabs = append(newTabs, tab)
 		}
 	}
 	for _, key := range config.VisibleTabs {
-		if key != "device" {
+		if newKey, ok := keyMap[key]; ok {
+			if newKey != "" && !seenKeys[newKey] {
+				newVisible = append(newVisible, newKey)
+			}
+			// newKey == "" 时跳过（如 device）
+		} else {
 			newVisible = append(newVisible, key)
 		}
 	}

 	defaultTab := config.DefaultTab
+	if newKey, ok := keyMap[defaultTab]; ok && newKey != "" {
+		defaultTab = newKey
+	}
 	if defaultTab == "device" {
 		defaultTab = "file-system"
 	}
--- a/internal/api/connection_api.go
+++ b/internal/api/connection_api.go
@@ -1,128 +0,0 @@
-package api
-
-import (
-	"u-desk/internal/service"
-	"u-desk/internal/storage/models"
-)
-
-// ConnectionAPI 连接管理API
-type ConnectionAPI struct {
-	connService *service.ConnectionService
-}
-
-// NewConnectionAPI 创建连接管理API
-func NewConnectionAPI() (*ConnectionAPI, error) {
-	connService, err := service.NewConnectionService()
-	if err != nil {
-		return nil, err
-	}
-	return &ConnectionAPI{connService}, nil
-}
-
-// SaveConnectionRequest 保存连接请求结构体
-type SaveConnectionRequest struct {
-	ID               uint   `json:"id"`
-	Name             string `json:"name"`
-	Type             string `json:"type"`
-	Host             string `json:"host"`
-	Port             int    `json:"port"`
-	Username         string `json:"username"`
-	Password         string `json:"password"`
-	Database         string `json:"database"`
-	Options          string `json:"options"`
-	VisibleDatabases string `json:"visible_databases"`
-}
-
-// SaveDbConnection 保存数据库连接配置
-func (api *ConnectionAPI) SaveDbConnection(req SaveConnectionRequest) error {
-	conn := &models.DbConnection{
-		ID:               req.ID,
-		Name:             req.Name,
-		Type:             req.Type,
-		Host:             req.Host,
-		Port:             req.Port,
-		Username:         req.Username,
-		Password:         req.Password,
-		Database:         req.Database,
-		Options:          req.Options,
-		VisibleDatabases: req.VisibleDatabases,
-	}
-	return api.connService.SaveConnection(conn)
-}
-
-// ListDbConnections 获取连接列表
-func (api *ConnectionAPI) ListDbConnections() ([]map[string]interface{}, error) {
-	connections, err := api.connService.ListConnections()
-	if err != nil {
-		return nil, err
-	}
-
-	result := make([]map[string]interface{}, len(connections))
-	timeFormat := "2006-01-02 15:04:05"
-	for i, conn := range connections {
-		result[i] = map[string]interface{}{
-			"id":                conn.ID,
-			"name":              conn.Name,
-			"type":              conn.Type,
-			"host":              conn.Host,
-			"port":              conn.Port,
-			"username":          conn.Username,
-			"database":          conn.Database,
-			"options":           conn.Options,
-			"visible_databases": conn.VisibleDatabases,
-			"created_at":        conn.CreatedAt.Format(timeFormat),
-			"updated_at":        conn.UpdatedAt.Format(timeFormat),
-		}
-	}
-	return result, nil
-}
-
-func (api *ConnectionAPI) DeleteDbConnection(id uint) error {
-	return api.connService.DeleteConnection(id)
-}
-
-func (api *ConnectionAPI) TestDbConnection(id uint) error {
-	return api.connService.TestConnection(id)
-}
-
-// TestConnectionRequest 测试连接请求结构体（不保存数据）
-type TestConnectionRequest struct {
-	ID       uint   `json:"id"` // 编辑模式下的连接ID（用于获取已保存的密码）
-	Type     string `json:"type"`
-	Host     string `json:"host"`
-	Port     int    `json:"port"`
-	Username string `json:"username"`
-	Password string `json:"password"`
-	Database string `json:"database"`
-	Options  string `json:"options"`
-}
-
-// TestDbConnectionWithParams 测试数据库连接（直接传入参数，不保存数据）
-func (api *ConnectionAPI) TestDbConnectionWithParams(req TestConnectionRequest) error {
-	return api.connService.TestConnectionWithParams(
-		req.Type, req.Host, req.Port,
-		req.Username, req.Password, req.Database,
-		req.Options, req.ID,
-	)
-}
-
-// LoadAllDatabasesRequest 加载全部数据库请求结构体
-type LoadAllDatabasesRequest struct {
-	ID       uint   `json:"id"`
-	Type     string `json:"type"`
-	Host     string `json:"host"`
-	Port     int    `json:"port"`
-	Username string `json:"username"`
-	Password string `json:"password"`
-	Database string `json:"database"`
-	Options  string `json:"options"`
-}
-
-// LoadAllDatabases 加载全部数据库列表
-func (api *ConnectionAPI) LoadAllDatabases(req LoadAllDatabasesRequest) ([]string, error) {
-	return api.connService.LoadAllDatabases(
-		req.Type, req.Host, req.Port,
-		req.Username, req.Password, req.Database,
-		req.Options, req.ID,
-	)
-}
--- a/internal/api/sql_api.go
+++ b/internal/api/sql_api.go
@@ -1,137 +0,0 @@
-package api
-
-import (
-	"encoding/json"
-	"u-desk/internal/service"
-	"u-desk/internal/storage/models"
-	"u-desk/internal/storage/repository"
-)
-
-type SqlAPI struct {
-	sqlService *service.SqlExecService
-	resultRepo repository.ResultRepository
-}
-
-func NewSqlAPI() (*SqlAPI, error) {
-	sqlService, err := service.NewSqlExecService()
-	if err != nil {
-		return nil, err
-	}
-	resultRepo, err := repository.NewResultRepository()
-	if err != nil {
-		return nil, err
-	}
-	return &SqlAPI{sqlService, resultRepo}, nil
-}
-
-// ExecuteSQL 执行SQL语句
-// 注意：SQL 语句应该已经包含分页信息（LIMIT 和 OFFSET），由客户端添加
-func (api *SqlAPI) ExecuteSQL(connectionID uint, sqlStr string, database string) (map[string]interface{}, error) {
-	result, err := api.sqlService.ExecuteSQL(connectionID, sqlStr, database)
-	if err != nil {
-		return nil, err
-	}
-
-	response := map[string]interface{}{
-		"type":          result.Type,
-		"data":          result.Data,
-		"rowsAffected":  result.RowsAffected,
-		"executionTime": result.ExecutionTime,
-	}
-	// 如果是查询，添加列顺序信息
-	if result.Type == "query" && len(result.Columns) > 0 {
-		response["columns"] = result.Columns
-	}
-
-	// 自动保存结果到历史记录（异步执行）
-	go func() {
-		api.resultRepo.Save(connectionID, database, sqlStr, result.Type, result.Data, result.Columns, result.RowsAffected, result.ExecutionTime)
-	}()
-
-	return response, nil
-}
-
-func (api *SqlAPI) GetDatabases(connectionID uint) ([]string, error) {
-	return api.sqlService.GetDatabases(connectionID)
-}
-
-func (api *SqlAPI) GetTables(connectionID uint, database string) ([]string, error) {
-	return api.sqlService.GetTables(connectionID, database)
-}
-
-func (api *SqlAPI) GetTableStructure(connectionID uint, database, tableName string) (map[string]interface{}, error) {
-	return api.sqlService.GetTableStructure(connectionID, database, tableName)
-}
-
-func (api *SqlAPI) GetIndexes(connectionID uint, database, tableName string) ([]map[string]interface{}, error) {
-	return api.sqlService.GetIndexes(connectionID, database, tableName)
-}
-
-func (api *SqlAPI) PreviewTableStructure(connectionID uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	return api.sqlService.PreviewTableStructure(connectionID, database, tableName, structure)
-}
-
-func (api *SqlAPI) UpdateTableStructure(connectionID uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	return api.sqlService.UpdateTableStructure(connectionID, database, tableName, structure)
-}
-
-func (api *SqlAPI) SaveResult(connectionID uint, database, sql string, resultType string, data interface{}, columns []string, rowsAffected int, executionTime int64) (map[string]interface{}, error) {
-	history, err := api.resultRepo.Save(connectionID, database, sql, resultType, data, columns, rowsAffected, executionTime)
-	if err != nil {
-		return nil, err
-	}
-	return historyToMap(history), nil
-}
-
-func (api *SqlAPI) GetResultHistory(connectionID *uint, keyword string, limit, offset int) (map[string]interface{}, error) {
-	histories, total, err := api.resultRepo.Search(connectionID, keyword, limit, offset)
-	if err != nil {
-		return nil, err
-	}
-
-	items := make([]map[string]interface{}, len(histories))
-	for i, h := range histories {
-		items[i] = historyToMap(&h)
-	}
-
-	return map[string]interface{}{"items": items, "total": total}, nil
-}
-
-func (api *SqlAPI) GetResultHistoryByID(id uint) (map[string]interface{}, error) {
-	history, err := api.resultRepo.FindByID(id)
-	if err != nil || history == nil {
-		return nil, err
-	}
-	return historyToMap(history), nil
-}
-
-func (api *SqlAPI) DeleteResultHistory(id uint) error {
-	return api.resultRepo.Delete(id)
-}
-
-func historyToMap(history *models.SqlResultHistory) map[string]interface{} {
-	result := map[string]interface{}{
-		"id":             history.ID,
-		"connection_id":  history.ConnectionID,
-		"database":       history.Database,
-		"sql":            history.Sql,
-		"type":           history.Type,
-		"rows_affected":  history.RowsAffected,
-		"execution_time": history.ExecutionTime,
-		"created_at":     history.CreatedAt,
-	}
-
-	if history.Data != "" {
-		var data interface{}
-		json.Unmarshal([]byte(history.Data), &data)
-		result["data"] = data
-	}
-
-	if history.Columns != "" {
-		var columns []string
-		json.Unmarshal([]byte(history.Columns), &columns)
-		result["columns"] = columns
-	}
-
-	return result
-}
--- a/internal/api/tab_api.go
+++ b/internal/api/tab_api.go
@@ -1,79 +0,0 @@
-package api
-
-import (
-	"fmt"
-	"u-desk/internal/service"
-	"u-desk/internal/storage/models"
-)
-
-// TabAPI 标签页API
-type TabAPI struct {
-	tabService *service.TabService
-}
-
-// NewTabAPI 创建标签页API
-func NewTabAPI() (*TabAPI, error) {
-	tabService, err := service.NewTabService()
-	if err != nil {
-		return nil, err
-	}
-	return &TabAPI{tabService: tabService}, nil
-}
-
-// SaveSqlTabs 保存SQL标签页列表（接收 map 格式，转换为模型）
-func (api *TabAPI) SaveSqlTabs(tabs []map[string]interface{}) error {
-	sqlTabs := make([]models.SqlTab, len(tabs))
-	for idx, tabData := range tabs {
-		tab := models.SqlTab{
-			Order: idx,
-		}
-
-		// 处理 ID
-		if id, ok := tabData["id"].(float64); ok && id > 0 {
-			tab.ID = uint(id)
-		}
-
-		// 处理标题
-		if title, ok := tabData["title"].(string); ok {
-			tab.Title = title
-		} else {
-			tab.Title = fmt.Sprintf("查询 %d", idx+1)
-		}
-
-		// 处理内容
-		if content, ok := tabData["content"].(string); ok {
-			tab.Content = content
-		}
-
-		// 处理连接ID
-		if connId, ok := tabData["connectionId"].(float64); ok && connId > 0 {
-			connID := uint(connId)
-			tab.ConnectionID = &connID
-		}
-
-		sqlTabs[idx] = tab
-	}
-	return api.tabService.SaveTabs(sqlTabs)
-}
-
-// ListSqlTabs 获取SQL标签页列表（返回 map 格式）
-func (api *TabAPI) ListSqlTabs() ([]map[string]interface{}, error) {
-	tabs, err := api.tabService.ListTabs()
-	if err != nil {
-		return nil, err
-	}
-
-	result := make([]map[string]interface{}, len(tabs))
-	for i, tab := range tabs {
-		result[i] = map[string]interface{}{
-			"id":           tab.ID,
-			"title":        tab.Title,
-			"content":      tab.Content,
-			"connectionId": tab.ConnectionID,
-			"order":        tab.Order,
-			"createdAt":    tab.CreatedAt.Format("2006-01-02 15:04:05"),
-			"updatedAt":    tab.UpdatedAt.Format("2006-01-02 15:04:05"),
-		}
-	}
-	return result, nil
-}
--- a/internal/common/constants.go
+++ b/internal/common/constants.go
@@ -2,8 +2,6 @@ package common

 // Default visible tabs configuration
 const (
-	// TabDatabase 数据库管理 Tab
-	TabDatabase = "db-cli"
 	// TabFileSystem 文件系统 Tab
 	TabFileSystem = "file-system"
 	// TabDevice 设备测试 Tab
@@ -11,4 +9,4 @@ const (
 )

 // DefaultVisibleTabs 默认可见的 Tabs
-var DefaultVisibleTabs = []string{TabDatabase, TabFileSystem, TabDevice}
+var DefaultVisibleTabs = []string{TabFileSystem, TabDevice}
--- a/internal/common/timeout.go
+++ b/internal/common/timeout.go
@@ -1,12 +0,0 @@
-package common
-
-import "time"
-
-// 数据库操作超时配置
-const (
-	TimeoutPing      = 2 * time.Second  // 连接测试超时
-	TimeoutConnect   = 5 * time.Second  // 初始连接超时
-	TimeoutFastQuery = 10 * time.Second // 元数据查询超时
-	TimeoutQuery     = 30 * time.Second // 普通查询超时
-	TimeoutLongOp    = 60 * time.Second // 长时间操作超时
-)
--- a/internal/crypto/aes.go
+++ b/internal/crypto/aes.go
@@ -1,175 +0,0 @@
-package crypto
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rand"
-	"encoding/base64"
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-	"sync"
-)
-
-// 旧版硬编码密钥（用于兼容迁移已有加密数据）
-var legacyKey = []byte("go-desk-db-cli-key-32bytes123456")
-
-var (
-	encryptionKey []byte
-	keyOnce       sync.Once
-	keyInitErr    error
-)
-
-// getKey 获取或创建机器唯一密钥
-// 首次启动时生成并持久化到用户配置目录，后续直接读取
-func getKey() ([]byte, error) {
-	keyOnce.Do(func() {
-		keyFile, err := getKeyFilePath()
-		if err != nil {
-			keyInitErr = fmt.Errorf("获取密钥路径失败: %v", err)
-			return
-		}
-
-		// 尝试读取已有密钥
-		if data, err := os.ReadFile(keyFile); err == nil && len(data) == 32 {
-			encryptionKey = data
-			return
-		}
-
-		// 生成新密钥
-		newKey := make([]byte, 32)
-		if _, err := io.ReadFull(rand.Reader, newKey); err != nil {
-			keyInitErr = fmt.Errorf("生成密钥失败: %v", err)
-			return
-		}
-
-		// 持久化密钥
-		dir := filepath.Dir(keyFile)
-		if err := os.MkdirAll(dir, 0700); err != nil {
-			keyInitErr = fmt.Errorf("创建密钥目录失败: %v", err)
-			return
-		}
-		if err := os.WriteFile(keyFile, newKey, 0600); err != nil {
-			keyInitErr = fmt.Errorf("保存密钥失败: %v", err)
-			return
-		}
-
-		encryptionKey = newKey
-	})
-
-	return encryptionKey, keyInitErr
-}
-
-// getKeyFilePath 返回密钥文件路径
-func getKeyFilePath() (string, error) {
-	configDir, err := os.UserConfigDir()
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(configDir, "u-desk", ".aes-key"), nil
-}
-
-// DecryptPasswordV2 使用指定密钥解密（用于密钥迁移）
-func DecryptPasswordV2(encryptedPassword string, key []byte) (string, error) {
-	if encryptedPassword == "" {
-		return "", nil
-	}
-	if len(encryptedPassword) < 10 {
-		return "", nil
-	}
-
-	ciphertext, err := base64.StdEncoding.DecodeString(encryptedPassword)
-	if err != nil {
-		return "", fmt.Errorf("解码失败: %v", err)
-	}
-
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return "", fmt.Errorf("创建解密器失败: %v", err)
-	}
-
-	aesGCM, err := cipher.NewGCM(block)
-	if err != nil {
-		return "", fmt.Errorf("创建 GCM 失败: %v", err)
-	}
-
-	nonceSize := aesGCM.NonceSize()
-	if len(ciphertext) < nonceSize {
-		return "", fmt.Errorf("密文长度不足")
-	}
-
-	nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
-
-	plaintext, err := aesGCM.Open(nil, nonce, ciphertext, nil)
-	if err != nil {
-		return "", fmt.Errorf("解密失败: %v", err)
-	}
-
-	return string(plaintext), nil
-}
-
-// EncryptPassword 加密密码
-func EncryptPassword(password string) (string, error) {
-	if password == "" {
-		return "", nil
-	}
-
-	key, err := getKey()
-	if err != nil {
-		return "", fmt.Errorf("获取加密密钥失败: %v", err)
-	}
-
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return "", fmt.Errorf("创建加密器失败: %v", err)
-	}
-
-	// 使用 GCM 模式
-	aesGCM, err := cipher.NewGCM(block)
-	if err != nil {
-		return "", fmt.Errorf("创建 GCM 失败: %v", err)
-	}
-
-	// 生成随机 nonce
-	nonce := make([]byte, aesGCM.NonceSize())
-	if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
-		return "", fmt.Errorf("生成 nonce 失败: %v", err)
-	}
-
-	// 加密
-	ciphertext := aesGCM.Seal(nonce, nonce, []byte(password), nil)
-
-	// Base64 编码
-	return base64.StdEncoding.EncodeToString(ciphertext), nil
-}
-
-// DecryptPassword 解密密码（自动回退旧密钥兼容旧数据）
-func DecryptPassword(encryptedPassword string) (string, error) {
-	if encryptedPassword == "" {
-		return "", nil
-	}
-	if len(encryptedPassword) < 10 {
-		return "", nil
-	}
-
-	key, err := getKey()
-	if err != nil {
-		return "", fmt.Errorf("获取解密密钥失败: %v", err)
-	}
-
-	// 先用新密钥尝试解密
-	result, err := DecryptPasswordV2(encryptedPassword, key)
-	if err == nil {
-		return result, nil
-	}
-
-	// 新密钥失败，尝试旧密钥（兼容已迁移的旧数据）
-	result, err = DecryptPasswordV2(encryptedPassword, legacyKey)
-	if err == nil {
-		return result, nil
-	}
-
-	// 两种密钥都失败
-	return "", fmt.Errorf("解密失败: %v", err)
-}
--- a/internal/database/db.go
+++ b/internal/database/db.go
@@ -1,138 +0,0 @@
-package database
-
-import (
-	"errors"
-	"fmt"
-	"u-desk/internal/model"
-	"time"
-
-	mysqldriver "github.com/go-sql-driver/mysql"
-	"gorm.io/driver/mysql"
-	"gorm.io/gorm"
-	"gorm.io/gorm/logger"
-)
-
-var (
-	ErrNotConnected = errors.New("数据库未连接")
-)
-
-// DB 数据库连接封装
-type DB struct {
-	db *gorm.DB
-}
-
-var globalDB *DB
-
-// Init 初始化数据库连接
-func Init() (*DB, error) {
-	if globalDB != nil {
-		return globalDB, nil
-	}
-
-	// 数据库配置 - 测试服 lab_dev
-	// 测试机外网IP: 39.99.243.191
-	// 使用 mysqldriver.Config 结构体构建 DSN，自动处理密码中的特殊字符
-	config := mysqldriver.Config{
-		User:                 "root",
-		Passwd:               "123456",
-		Net:                  "tcp",
-		Addr:                 "127.0.0.1:3306",
-		DBName:               "lab_dev",
-		Params:               map[string]string{"charset": "utf8mb4", "parseTime": "True", "loc": "Local"},
-		AllowNativePasswords: true,
-	}
-	dsn := config.FormatDSN()
-
-	// GORM 配置
-	gormConfig := &gorm.Config{
-		Logger: logger.Default.LogMode(logger.Info),
-	}
-
-	db, err := gorm.Open(mysql.Open(dsn), gormConfig)
-	if err != nil {
-		return nil, fmt.Errorf("打开数据库连接失败: %v", err)
-	}
-
-	// 获取底层 sql.DB 设置连接池参数
-	sqlDB, err := db.DB()
-	if err != nil {
-		return nil, fmt.Errorf("获取数据库实例失败: %v", err)
-	}
-
-	// 测试连接
-	if err := sqlDB.Ping(); err != nil {
-		return nil, fmt.Errorf("数据库连接测试失败: %v", err)
-	}
-
-	// 设置连接池参数
-	sqlDB.SetMaxOpenConns(25)
-	sqlDB.SetMaxIdleConns(5)
-	sqlDB.SetConnMaxLifetime(time.Duration(300) * time.Second)
-
-	globalDB = &DB{db: db}
-	return globalDB, nil
-}
-
-// QueryUsers 查询用户列表
-func (d *DB) QueryUsers(keyword string, status int, role int, organid int, page int, pageSize int, sortField string, sortOrder string) (map[string]interface{}, error) {
-	if d.db == nil {
-		return nil, ErrNotConnected
-	}
-
-	query := d.db.Model(&model.MemberInfo{})
-
-	// 关键字搜索（姓名、账号、电话）
-	if keyword != "" {
-		query = query.Where("membername LIKE ? OR account LIKE ? OR contactphone LIKE ?",
-			"%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%")
-	}
-
-	// 状态筛选
-	if status > 0 {
-		query = query.Where("status = ?", status)
-	} else {
-		// 默认过滤删除状态
-		query = query.Where("status != ?", 3)
-	}
-
-	// 角色筛选（需要关联查询，暂时简化）
-	if role > 0 {
-		// TODO: 关联 sys_member_role 表查询
-	}
-
-	// 机构筛选
-	if organid > 0 {
-		query = query.Where("organid = ?", organid)
-	}
-
-	// 排序
-	if sortField != "" {
-		if sortOrder == "descend" || sortOrder == "desc" {
-			query = query.Order(sortField + " DESC")
-		} else {
-			query = query.Order(sortField + " ASC")
-		}
-	} else {
-		// 默认按创建时间倒序
-		query = query.Order("createtime DESC")
-	}
-
-	// 总数
-	var total int64
-	query.Count(&total)
-
-	// 分页
-	offset := (page - 1) * pageSize
-	var users []model.MemberInfo
-	if err := query.Offset(offset).Limit(pageSize).Find(&users).Error; err != nil {
-		return nil, fmt.Errorf("查询用户失败: %v", err)
-	}
-
-	// 返回结果
-	result := map[string]interface{}{
-		"rows":  users,
-		"total": total,
-	}
-
-	return result, nil
-}
--- a/internal/dbclient/cache.go
+++ b/internal/dbclient/cache.go
@@ -1,479 +0,0 @@
-package dbclient
-
-import (
-	"crypto/sha256"
-	"fmt"
-	"sync"
-	"time"
-)
-
-// QueryCache 查询缓存
-type QueryCache struct {
-	items      map[string]*CachedQuery
-	size       int
-	ttl        time.Duration
-	mu         sync.RWMutex
-	stopCh     chan struct{}
-	wg         sync.WaitGroup
-
-	// 智能缓存策略
-	hitRate       float64              // 缓存命中率
-	hitCount      int64                // 命中次数
-	missCount     int64                // 未命中次数
-	evictionCount int64                // 驱逐次数
-	hotQueries    map[string]bool      // 热点查询标记
-	cooldowns     map[string]time.Time // 冷却时间（避免频繁驱逐）
-
-	// 内存限制
-	maxMemoryBytes int64 // 缓存最大内存（字节），默认 100MB
-	usedMemory     int64 // 当前估算内存使用量
-}
-
-// NewQueryCache 创建新的查询缓存
-func NewQueryCache(size int, ttl time.Duration) *QueryCache {
-	cache := &QueryCache{
-		items:          make(map[string]*CachedQuery),
-		size:           size,
-		ttl:            ttl,
-		stopCh:         make(chan struct{}),
-		hitRate:        0.0,
-		hitCount:       0,
-		missCount:      0,
-		evictionCount:  0,
-		hotQueries:     make(map[string]bool),
-		cooldowns:      make(map[string]time.Time),
-		maxMemoryBytes: 100 * 1024 * 1024, // 默认 100MB
-	}
-
-	// 启动清理协程
-	cache.StartCleanup()
-
-	// 启动统计协程
-	cache.StartStatsCollection()
-
-	return cache
-}
-
-// Get 从缓存中获取查询结果
-func (c *QueryCache) Get(params QueryParams) (*CachedQuery, error) {
-	key := c.generateKey(params)
-
-	c.mu.RLock()
-	item, exists := c.items[key]
-	if !exists {
-		c.missCount++
-		_, inCooldown := c.cooldowns[key]
-		if inCooldown && time.Now().Before(c.cooldowns[key]) {
-			c.mu.RUnlock()
-			return nil, ErrCacheCooldown
-		}
-		c.mu.RUnlock()
-		return nil, ErrCacheNotFound
-	}
-
-	// 检查是否过期
-	if time.Now().After(item.ExpiryTime) {
-		if c.isHotQuery(key) {
-			c.mu.RUnlock()
-			c.mu.Lock()
-			item.ExpiryTime = time.Now().Add(c.ttl)
-			c.hitCount++
-			c.markAsHot(key)
-			c.mu.Unlock()
-			return item, nil
-		}
-		c.mu.RUnlock()
-		c.mu.Lock()
-		delete(c.items, key)
-		c.evictionCount++
-		c.missCount++
-		c.mu.Unlock()
-		return nil, ErrCacheExpired
-	}
-
-	// 命中
-	c.hitCount++
-	needsMark := !c.hotQueries[key]
-	c.mu.RUnlock()
-
-	if needsMark {
-		c.mu.Lock()
-		c.markAsHot(key)
-		c.mu.Unlock()
-	}
-
-	return item, nil
-}
-
-// Set 将查询结果存入缓存
-func (c *QueryCache) Set(params QueryParams, item *CachedQuery) {
-	key := c.generateKey(params)
-
-	// 估算条目内存大小
-	itemSize := c.estimateSize(params, item)
-
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	// 更新统计
-	c.recordQueryAttempt(key)
-
-	// 如果超过内存限制，执行驱逐直到有空间
-	for c.usedMemory+itemSize > c.maxMemoryBytes && len(c.items) > 0 {
-		c.smartEvict(key)
-	}
-
-	// 如果条目数已满，执行智能驱逐
-	if len(c.items) >= c.size {
-		c.smartEvict(key)
-	}
-
-	// 如果已有旧条目，先减去旧的大小
-	if old, exists := c.items[key]; exists {
-		c.usedMemory -= c.estimateItemSize(old)
-	}
-
-	c.items[key] = item
-	c.usedMemory += itemSize
-
-	// 标记为热点查询
-	c.markAsHot(key)
-}
-
-// smartEvict 智能驱逐策略
-func (c *QueryCache) smartEvict(newKey string) {
-	if len(c.items) == 0 {
-		return
-	}
-	// LRU + LFU 混合策略
-	var evictKey string
-	var worstScore float64 = -1
-
-	for key, item := range c.items {
-		if key == newKey {
-			continue
-		}
-
-		score := c.calculateEvictionScore(key, item)
-		if score > worstScore {
-			worstScore = score
-			evictKey = key
-		}
-	}
-
-	if evictKey != "" {
-		if evicted, exists := c.items[evictKey]; exists {
-			c.usedMemory -= c.estimateItemSize(evicted)
-		}
-		c.cooldowns[evictKey] = time.Now().Add(1 * time.Minute)
-		delete(c.items, evictKey)
-		c.evictionCount++
-	}
-}
-
-// calculateEvictionScore 计算驱逐分数（越低越适合保留）
-func (c *QueryCache) calculateEvictionScore(key string, item *CachedQuery) float64 {
-	now := time.Now()
-
-	// 基础分数
-	score := 1.0
-
-	// 热点查询加分（优先保留）
-	if c.isHotQuery(key) {
-		score -= 0.5
-	}
-
-	// 接近过期的加分（优先驱逐即将过期的）
-	if item.ExpiryTime.Sub(now) < c.ttl/2 {
-		score += 0.3
-	}
-
-	// 最近使用的加分（优先保留最近使用的）
-	if !item.LastUsed.IsZero() {
-		recency := now.Sub(item.LastUsed)
-		if recency < 5*time.Minute {
-			score -= 0.2
-		}
-	}
-
-	return score
-}
-
-// isHotQuery 检查是否为热点查询
-func (c *QueryCache) isHotQuery(key string) bool {
-	return c.hotQueries[key]
-}
-
-// markAsHot 标记为热点查询
-func (c *QueryCache) markAsHot(key string) {
-	c.hotQueries[key] = true
-}
-
-// cleanupHotMarkers 清理热点标记
-func (c *QueryCache) cleanupHotMarkers() {
-	now := time.Now()
-	for key := range c.hotQueries {
-		// 清理超过10分钟未使用的热点标记
-		if item, exists := c.items[key]; exists {
-			if now.Sub(item.LastUsed) > 10*time.Minute {
-				delete(c.hotQueries, key)
-			}
-		} else {
-			delete(c.hotQueries, key)
-		}
-	}
-}
-
-// recordQueryAttempt 记录查询尝试
-func (c *QueryCache) recordQueryAttempt(key string) {
-	// 更新命中率
-	c.updateHitRate()
-
-	// 更新最后使用时间
-	if item, exists := c.items[key]; exists {
-		item.LastUsed = time.Now()
-	}
-}
-
-// updateHitRate 更新命中率
-func (c *QueryCache) updateHitRate() {
-	total := c.hitCount + c.missCount
-	if total > 0 {
-		c.hitRate = float64(c.hitCount) / float64(total)
-	}
-}
-
-// Delete 从缓存中删除指定查询
-func (c *QueryCache) Delete(params QueryParams) {
-	key := c.generateKey(params)
-
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	if item, exists := c.items[key]; exists {
-		c.usedMemory -= c.estimateItemSize(item)
-		delete(c.items, key)
-	}
-}
-
-// Clear 清空整个缓存
-func (c *QueryCache) Clear() {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	c.items = make(map[string]*CachedQuery)
-	c.usedMemory = 0
-}
-
-// Size 获取缓存大小
-func (c *QueryCache) Size() int {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-
-	return len(c.items)
-}
-
-// CleanupExpired 清理过期的缓存条目
-func (c *QueryCache) CleanupExpired() {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	now := time.Now()
-	for key, item := range c.items {
-		if now.After(item.ExpiryTime) {
-			c.usedMemory -= c.estimateItemSize(item)
-			delete(c.items, key)
-		}
-	}
-}
-
-// Keys 获取缓存中所有的键
-func (c *QueryCache) Keys() []string {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-
-	keys := make([]string, 0, len(c.items))
-	for key := range c.items {
-		keys = append(keys, key)
-	}
-	return keys
-}
-
-// Stats 获取缓存统计信息
-func (c *QueryCache) Stats() CacheStats {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-
-	now := time.Now()
-	expired := 0
-	active := 0
-
-	for _, item := range c.items {
-		if now.After(item.ExpiryTime) {
-			expired++
-		} else {
-			active++
-		}
-	}
-
-	return CacheStats{
-		TotalItems:    len(c.items),
-		ActiveItems:   active,
-		ExpiredItems:  expired,
-		Size:          c.size,
-		TTL:           c.ttl,
-		HitRate:       c.hitRate,
-		HitCount:      c.hitCount,
-		MissCount:     c.missCount,
-		EvictionCount: c.evictionCount,
-		HotQueries:    len(c.hotQueries),
-	}
-}
-
-// generateKey 生成缓存键
-func (c *QueryCache) generateKey(params QueryParams) string {
-	key := fmt.Sprintf("%s|%s|%d|%d|%s|%s|%s|%v",
-		params.SQL, params.Database, params.Limit, params.Offset,
-		params.Table, params.Where, params.SortBy, params.IsReadOnly)
-	h := sha256.Sum256([]byte(key))
-	return fmt.Sprintf("%x", h)
-}
-
-// evictOldest 删除最老的缓存条目
-func (c *QueryCache) evictOldest() {
-	var oldestKey string
-	var oldestTime time.Time
-
-	for key, item := range c.items {
-		if oldestKey == "" || item.CreatedAt.Before(oldestTime) {
-			oldestKey = key
-			oldestTime = item.CreatedAt
-		}
-	}
-
-	if oldestKey != "" {
-		delete(c.items, oldestKey)
-	}
-}
-
-// StartCleanup 启动清理协程
-func (c *QueryCache) StartCleanup() {
-	c.wg.Add(1)
-	go func() {
-		defer c.wg.Done()
-
-		ticker := time.NewTicker(c.ttl / 2) // 每 TTL/2 时间检查一次
-		defer ticker.Stop()
-
-		for {
-			select {
-			case <-ticker.C:
-				c.CleanupExpired()
-				c.cleanupCooldowns() // 清理冷却时间
-			case <-c.stopCh:
-				return
-			}
-		}
-	}()
-}
-
-// StartStatsCollection 启动统计收集协程
-func (c *QueryCache) StartStatsCollection() {
-	c.wg.Add(1)
-	go func() {
-		defer c.wg.Done()
-
-		ticker := time.NewTicker(1 * time.Minute) // 每分钟收集一次统计
-		defer ticker.Stop()
-
-		for {
-			select {
-			case <-ticker.C:
-				c.updateHitRate()
-				c.cleanupHotMarkers()
-			case <-c.stopCh:
-				return
-			}
-		}
-	}()
-}
-
-// cleanupCooldowns 清理冷却时间
-func (c *QueryCache) cleanupCooldowns() {
-	now := time.Now()
-	for key, cooldown := range c.cooldowns {
-		if now.After(cooldown) {
-			delete(c.cooldowns, key)
-		}
-	}
-}
-
-// Stop 停止缓存清理
-func (c *QueryCache) Stop() {
-	close(c.stopCh)
-	c.wg.Wait()
-}
-
-// CacheStats 缓存统计信息
-type CacheStats struct {
-	TotalItems    int
-	ActiveItems   int
-	ExpiredItems  int
-	Size          int
-	TTL           time.Duration
-	HitRate       float64
-	HitCount      int64
-	MissCount     int64
-	EvictionCount int64
-	HotQueries    int
-}
-
-// 缓存错误定义
-var (
-	ErrCacheNotFound = &CacheError{Message: "缓存未找到"}
-	ErrCacheExpired  = &CacheError{Message: "缓存已过期"}
-	ErrCacheCooldown = &CacheError{Message: "查询在冷却中"}
-)
-
-// CacheError 缓存错误
-type CacheError struct {
-	Message string
-}
-
-func (e *CacheError) Error() string {
-	return e.Message
-}
-
-// estimateSize 估算缓存条目的内存大小（字节）
-func (c *QueryCache) estimateSize(params QueryParams, item *CachedQuery) int64 {
-	size := int64(len(params.SQL) + len(params.Database) + len(params.Table) +
-		len(params.Where) + len(params.SortBy))
-	if item != nil && item.Result != nil {
-		size += c.estimateItemSize(item)
-	}
-	return size
-}
-
-// estimateItemSize 估算 CachedQuery 的内存大小
-func (c *QueryCache) estimateItemSize(item *CachedQuery) int64 {
-	if item == nil || item.Result == nil {
-		return 128 // 基础结构体大小
-	}
-	size := int64(128) // CachedQuery 结构体基础大小
-	for _, row := range item.Result.Data {
-		for _, v := range row {
-			switch val := v.(type) {
-			case string:
-				size += int64(len(val))
-			case []byte:
-				size += int64(len(val))
-			case nil:
-				// 无额外开销
-			default:
-				size += 64 // 其他类型的估算值
-			}
-		}
-	}
-	size += int64(len(item.Result.Columns)) * 64 // 列名估算
-	return size
-}
--- a/internal/dbclient/mongo.go
+++ b/internal/dbclient/mongo.go
@@ -1,825 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"fmt"
-	"net/url"
-
-	"u-desk/internal/common"
-
-	"go.mongodb.org/mongo-driver/v2/bson"
-	"go.mongodb.org/mongo-driver/v2/mongo"
-	"go.mongodb.org/mongo-driver/v2/mongo/options"
-)
-
-// MongoClient MongoDB 客户端
-type MongoClient struct {
-	client   *mongo.Client
-	database *mongo.Database
-	config   *MongoConfig
-}
-
-// MongoConfig MongoDB 配置
-type MongoConfig struct {
-	Host          string
-	Port          int
-	Username      string
-	Password      string
-	Database      string
-	AuthSource    string // 认证数据库，默认为 "admin"
-	AuthMechanism string // 认证机制，如 "SCRAM-SHA-1", "SCRAM-SHA-256" 等
-}
-
-// NewMongoClient 创建 MongoDB 客户端
-func NewMongoClient(config *MongoConfig) (*MongoClient, error) {
-	// 确定认证数据库，默认为 admin
-	authSource := config.AuthSource
-	if authSource == "" {
-		authSource = "admin"
-	}
-
-	// 如果指定了认证机制，直接使用；否则尝试自动检测
-	authMechanisms := []string{}
-	if config.AuthMechanism != "" {
-		// 用户明确指定了认证机制，只使用该机制
-		authMechanisms = []string{config.AuthMechanism}
-	} else {
-		// 未指定时，先尝试 SCRAM-SHA-256（更安全），失败则尝试 SCRAM-SHA-1
-		authMechanisms = []string{"SCRAM-SHA-256", "SCRAM-SHA-1"}
-	}
-
-	var lastErr error
-	for _, authMechanism := range authMechanisms {
-		client, err := tryConnectMongo(config, authSource, authMechanism)
-		if err == nil {
-			return client, nil
-		}
-		lastErr = err
-		// 如果明确指定了认证机制，失败后不再尝试其他机制
-		if config.AuthMechanism != "" {
-			break
-		}
-	}
-
-	// 所有认证机制都失败
-	if lastErr != nil {
-		return nil, fmt.Errorf("MongoDB 连接测试失败: %v", lastErr)
-	}
-
-	return nil, fmt.Errorf("MongoDB 连接失败: 未知错误")
-}
-
-// tryConnectMongo 尝试使用指定的认证机制连接 MongoDB
-func tryConnectMongo(config *MongoConfig, authSource, authMechanism string) (*MongoClient, error) {
-	// 构建连接 URI
-	var uri string
-
-	if config.Username != "" && config.Password != "" {
-		// 使用 url.UserPassword 正确转义用户名和密码中的特殊字符
-		// 这会正确处理 @、:、/ 等特殊字符
-		userInfo := url.UserPassword(config.Username, config.Password)
-
-		// 构建基础 URI
-		uri = fmt.Sprintf("mongodb://%s@%s:%d", userInfo.String(), config.Host, config.Port)
-
-		// 添加数据库和认证源参数
-		params := url.Values{}
-		params.Set("authSource", authSource)
-
-		// 添加认证机制参数
-		if authMechanism != "" {
-			params.Set("authMechanism", authMechanism)
-		}
-
-		// 如果有业务数据库，添加到路径中
-		if config.Database != "" {
-			uri = fmt.Sprintf("%s/%s?%s", uri, config.Database, params.Encode())
-		} else {
-			// MongoDB URI 要求查询参数前必须有 /，即使没有数据库名
-			uri = fmt.Sprintf("%s/?%s", uri, params.Encode())
-		}
-	} else if config.Database != "" {
-		// 没有认证信息时，数据库部分用于指定默认数据库
-		uri = fmt.Sprintf("mongodb://%s:%d/%s", config.Host, config.Port, config.Database)
-	} else {
-		uri = fmt.Sprintf("mongodb://%s:%d", config.Host, config.Port)
-	}
-
-	// 客户端选项
-	clientOptions := options.Client().
-		ApplyURI(uri).
-		SetConnectTimeout(common.TimeoutConnect).
-		SetServerSelectionTimeout(common.TimeoutConnect)
-
-	// 创建客户端 (v2: 移除了 context 参数)
-	client, err := mongo.Connect(clientOptions)
-
-	// 创建 context 用于其他操作
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
-	defer cancel()
-	if err != nil {
-		return nil, fmt.Errorf("连接 MongoDB 失败: %v", err)
-	}
-
-	// 测试连接
-	if err := client.Ping(ctx, nil); err != nil {
-		client.Disconnect(ctx)
-		return nil, fmt.Errorf("MongoDB 连接测试失败: %v", err)
-	}
-
-	var database *mongo.Database
-	if config.Database != "" {
-		database = client.Database(config.Database)
-	}
-
-	return &MongoClient{
-		client:   client,
-		database: database,
-		config:   config,
-	}, nil
-}
-
-// TestMongoConnection 测试连接
-func TestMongoConnection(host string, port int, username, password, database string) error {
-	return TestMongoConnectionWithAuthSource(host, port, username, password, database, "")
-}
-
-// TestMongoConnectionWithAuthSource 测试连接（支持指定认证数据库）
-func TestMongoConnectionWithAuthSource(host string, port int, username, password, database, authSource string) error {
-	return TestMongoConnectionWithOptions(host, port, username, password, database, authSource, "")
-}
-
-// TestMongoConnectionWithOptions 测试连接（支持指定认证数据库和认证机制）
-func TestMongoConnectionWithOptions(host string, port int, username, password, database, authSource, authMechanism string) error {
-	config := &MongoConfig{
-		Host:          host,
-		Port:          port,
-		Username:      username,
-		Password:      password,
-		Database:      database,
-		AuthSource:    authSource,
-		AuthMechanism: authMechanism,
-	}
-	client, err := NewMongoClient(config)
-	if err != nil {
-		return err
-	}
-	defer client.Close()
-	return nil
-}
-
-// Close 关闭连接
-func (c *MongoClient) Close() error {
-	if c.client != nil {
-		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
-		defer cancel()
-		return c.client.Disconnect(ctx)
-	}
-	return nil
-}
-
-// ListDatabases 获取数据库列表
-func (c *MongoClient) ListDatabases(ctx context.Context) ([]string, error) {
-	databases, err := c.client.ListDatabaseNames(ctx, bson.M{})
-	return databases, err
-}
-
-// ListCollections 获取集合列表
-func (c *MongoClient) ListCollections(ctx context.Context, database string) ([]string, error) {
-	db := c.client.Database(database)
-	collections, err := db.ListCollectionNames(ctx, bson.M{})
-	return collections, err
-}
-
-// GetCollectionStructure 获取集合结构
-func (c *MongoClient) GetCollectionStructure(ctx context.Context, database, collectionName string) (map[string]interface{}, error) {
-	coll := c.client.Database(database).Collection(collectionName)
-
-	result := map[string]interface{}{
-		"database":      database,
-		"collection":    collectionName,
-		"sampleDocs":    []map[string]interface{}{},
-		"fieldStats":    map[string]int{},
-		"indexes":       []map[string]interface{}{},
-		"documentCount": int64(0),
-	}
-
-	// 获取文档示例（最多 5 个）
-	opts := options.Find().SetLimit(5)
-	cursor, err := coll.Find(ctx, bson.M{}, opts)
-	if err != nil {
-		return nil, fmt.Errorf("获取文档示例失败: %v", err)
-	}
-	defer cursor.Close(ctx)
-
-	var docs []bson.M
-	if err = cursor.All(ctx, &docs); err != nil {
-		return nil, fmt.Errorf("解析文档失败: %v", err)
-	}
-
-	// 转换为 map
-	sampleDocs := make([]map[string]interface{}, 0, len(docs))
-	for _, doc := range docs {
-		docMap := make(map[string]interface{})
-		for k, v := range doc {
-			docMap[k] = v
-		}
-		sampleDocs = append(sampleDocs, docMap)
-	}
-	result["sampleDocs"] = sampleDocs
-
-	// 字段统计：使用 $sample 聚合管道随机采样10个文档进行统计
-	// 这样可以获得更准确的字段分布，同时保持良好性能
-	// 使用异步方式执行，避免阻塞主流程
-	sampleSize := 10
-	pipeline := []bson.M{
-		{"$sample": bson.M{"size": sampleSize}},
-		{"$project": bson.M{"keys": bson.M{"$objectToArray": "$$ROOT"}}},
-		{"$unwind": "$keys"},
-		{"$group": bson.M{
-			"_id":   "$keys.k",
-			"count": bson.M{"$sum": 1},
-		}},
-		{"$sort": bson.M{"count": -1}}, // 按出现次数降序排序
-	}
-
-	sampleCursor, err := coll.Aggregate(ctx, pipeline)
-	if err != nil {
-		// 如果采样失败，回退到基于文档示例的统计
-		fieldCount := make(map[string]int)
-		for _, doc := range docs {
-			for key := range doc {
-				fieldCount[key]++
-			}
-		}
-		result["fieldStats"] = fieldCount
-		result["fieldStatsSampleSize"] = len(docs) // 记录实际采样数量
-		result["fieldStatsMethod"] = "sample-docs" // 标记统计方式
-	} else {
-		defer sampleCursor.Close(ctx)
-		fieldCount := make(map[string]int)
-		for sampleCursor.Next(ctx) {
-			var statResult bson.M
-			if err := sampleCursor.Decode(&statResult); err != nil {
-				continue
-			}
-			fieldName, ok := statResult["_id"].(string)
-			if !ok {
-				continue
-			}
-			var count int
-			switch v := statResult["count"].(type) {
-			case int32:
-				count = int(v)
-			case int64:
-				count = int(v)
-			case int:
-				count = v
-			case float64:
-				count = int(v)
-			default:
-				continue
-			}
-			fieldCount[fieldName] = count
-		}
-		result["fieldStats"] = fieldCount
-		result["fieldStatsSampleSize"] = sampleSize     // 记录采样数量
-		result["fieldStatsMethod"] = "sample-aggregate" // 标记统计方式
-	}
-
-	// 文档总数（使用估算值，性能更好）
-	// 对于大数据集，estimatedDocumentCount 比 CountDocuments 快得多
-	// 如果需要精确值，可以使用 CountDocuments，但性能较差
-	count, err := coll.EstimatedDocumentCount(ctx)
-	if err != nil {
-		// 如果估算失败，尝试精确计数（可能较慢）
-		count, err = coll.CountDocuments(ctx, bson.M{})
-		if err != nil {
-			return nil, fmt.Errorf("获取文档数量失败: %v", err)
-		}
-	}
-	result["documentCount"] = count
-
-	// 索引信息
-	indexCursor, err := coll.Indexes().List(ctx)
-	if err != nil {
-		// 索引查询失败不影响主流程
-		result["indexes"] = []map[string]interface{}{}
-	} else {
-		var indexes []map[string]interface{}
-		for indexCursor.Next(ctx) {
-			var indexSpec bson.M
-			if err := indexCursor.Decode(&indexSpec); err != nil {
-				continue
-			}
-			indexes = append(indexes, map[string]interface{}{
-				"name":   indexSpec["name"],
-				"unique": indexSpec["unique"],
-				"keys":   indexSpec["key"],
-			})
-		}
-		indexCursor.Close(ctx)
-		result["indexes"] = indexes
-	}
-
-	return result, nil
-}
-
-// ExecuteQuery 执行查询
-func (c *MongoClient) ExecuteQuery(ctx context.Context, database, collection string, filter bson.M, limit int64) ([]map[string]interface{}, error) {
-	db := c.client.Database(database)
-	coll := db.Collection(collection)
-
-	opts := options.Find().SetLimit(limit)
-	cursor, err := coll.Find(ctx, filter, opts)
-	if err != nil {
-		return nil, fmt.Errorf("查询失败: %v", err)
-	}
-	defer cursor.Close(ctx)
-
-	var results []map[string]interface{}
-	if err := cursor.All(ctx, &results); err != nil {
-		return nil, fmt.Errorf("读取结果失败: %v", err)
-	}
-
-	return results, nil
-}
-
-// CountDocuments 获取文档数量
-func (c *MongoClient) CountDocuments(ctx context.Context, database, collection string, filter bson.M) (int64, error) {
-	db := c.client.Database(database)
-	coll := db.Collection(collection)
-	return coll.CountDocuments(ctx, filter)
-}
-
-// ExecuteCommand 执行 MongoDB 命令
-// command 可以是 JSON 格式的字符串，格式：{"op": "find", "database": "test", "collection": "users", "filter": {}, "limit": 100}
-// 支持的操作：find, count, insertOne, insertMany, updateOne, updateMany, deleteOne, deleteMany
-func (c *MongoClient) ExecuteCommand(ctx context.Context, database string, command map[string]interface{}) (interface{}, error) {
-	op, ok := command["op"].(string)
-	if !ok {
-		return nil, fmt.Errorf("命令中缺少 'op' 字段或格式错误")
-	}
-
-	collectionName, ok := command["collection"].(string)
-	if !ok {
-		return nil, fmt.Errorf("命令中缺少 'collection' 字段或格式错误")
-	}
-
-	// 如果没有指定数据库，使用配置中的默认数据库
-	if database == "" {
-		if c.config != nil && c.config.Database != "" {
-			database = c.config.Database
-		} else {
-			return nil, fmt.Errorf("需要指定数据库名称")
-		}
-	}
-
-	db := c.client.Database(database)
-	coll := db.Collection(collectionName)
-
-	switch op {
-	case "find":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		}
-
-		limit := int64(100)
-		if l, ok := command["limit"]; ok {
-			if limitVal, ok := l.(float64); ok {
-				limit = int64(limitVal)
-			} else if limitVal, ok := l.(int64); ok {
-				limit = limitVal
-			}
-		}
-
-		opts := options.Find().SetLimit(limit)
-		cursor, err := coll.Find(ctx, filter, opts)
-		if err != nil {
-			return nil, fmt.Errorf("查询失败: %v", err)
-		}
-		defer cursor.Close(ctx)
-
-		var results []map[string]interface{}
-		if err := cursor.All(ctx, &results); err != nil {
-			return nil, fmt.Errorf("读取结果失败: %v", err)
-		}
-
-		return results, nil
-
-	case "count":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		}
-
-		count, err := coll.CountDocuments(ctx, filter)
-		if err != nil {
-			return nil, fmt.Errorf("统计失败: %v", err)
-		}
-		return count, nil
-
-	case "insertOne":
-		document, ok := command["document"]
-		if !ok {
-			return nil, fmt.Errorf("insertOne 操作需要 'document' 字段")
-		}
-
-		doc := bson.M{}
-		if docMap, ok := document.(map[string]interface{}); ok {
-			doc = bson.M(docMap)
-		} else {
-			return nil, fmt.Errorf("document 必须是对象格式")
-		}
-
-		result, err := coll.InsertOne(ctx, doc)
-		if err != nil {
-			return nil, fmt.Errorf("插入失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"insertedId": result.InsertedID,
-		}, nil
-
-	case "insertMany":
-		documents, ok := command["documents"]
-		if !ok {
-			return nil, fmt.Errorf("insertMany 操作需要 'documents' 字段")
-		}
-
-		docs := []interface{}{}
-		if docsSlice, ok := documents.([]interface{}); ok {
-			for _, d := range docsSlice {
-				if docMap, ok := d.(map[string]interface{}); ok {
-					docs = append(docs, bson.M(docMap))
-				}
-			}
-		} else {
-			return nil, fmt.Errorf("documents 必须是数组格式")
-		}
-
-		result, err := coll.InsertMany(ctx, docs)
-		if err != nil {
-			return nil, fmt.Errorf("批量插入失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"insertedIds":   result.InsertedIDs,
-			"insertedCount": len(result.InsertedIDs),
-		}, nil
-
-	case "updateOne":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		} else {
-			return nil, fmt.Errorf("updateOne 操作需要 'filter' 字段")
-		}
-
-		update, ok := command["update"]
-		if !ok {
-			return nil, fmt.Errorf("updateOne 操作需要 'update' 字段")
-		}
-
-		updateDoc := bson.M{}
-		if updateMap, ok := update.(map[string]interface{}); ok {
-			updateDoc = bson.M(updateMap)
-		} else {
-			return nil, fmt.Errorf("update 必须是对象格式")
-		}
-
-		result, err := coll.UpdateOne(ctx, filter, bson.M{"$set": updateDoc})
-		if err != nil {
-			return nil, fmt.Errorf("更新失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"matchedCount":  result.MatchedCount,
-			"modifiedCount": result.ModifiedCount,
-		}, nil
-
-	case "updateMany":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		} else {
-			return nil, fmt.Errorf("updateMany 操作需要 'filter' 字段")
-		}
-
-		update, ok := command["update"]
-		if !ok {
-			return nil, fmt.Errorf("updateMany 操作需要 'update' 字段")
-		}
-
-		updateDoc := bson.M{}
-		if updateMap, ok := update.(map[string]interface{}); ok {
-			updateDoc = bson.M(updateMap)
-		} else {
-			return nil, fmt.Errorf("update 必须是对象格式")
-		}
-
-		result, err := coll.UpdateMany(ctx, filter, bson.M{"$set": updateDoc})
-		if err != nil {
-			return nil, fmt.Errorf("批量更新失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"matchedCount":  result.MatchedCount,
-			"modifiedCount": result.ModifiedCount,
-		}, nil
-
-	case "deleteOne":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		} else {
-			return nil, fmt.Errorf("deleteOne 操作需要 'filter' 字段")
-		}
-
-		result, err := coll.DeleteOne(ctx, filter)
-		if err != nil {
-			return nil, fmt.Errorf("删除失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"deletedCount": result.DeletedCount,
-		}, nil
-
-	case "deleteMany":
-		filter := bson.M{}
-		if f, ok := command["filter"]; ok {
-			if filterMap, ok := f.(map[string]interface{}); ok {
-				filter = bson.M(filterMap)
-			}
-		} else {
-			return nil, fmt.Errorf("deleteMany 操作需要 'filter' 字段")
-		}
-
-		result, err := coll.DeleteMany(ctx, filter)
-		if err != nil {
-			return nil, fmt.Errorf("批量删除失败: %v", err)
-		}
-
-		return map[string]interface{}{
-			"deletedCount": result.DeletedCount,
-		}, nil
-
-	default:
-		return nil, fmt.Errorf("不支持的操作: %s，支持的操作: find, count, insertOne, insertMany, updateOne, updateMany, deleteOne, deleteMany", op)
-	}
-}
-
-// PreviewCollectionIndexes 预览集合索引变更，只生成命令列表不执行
-func (c *MongoClient) PreviewCollectionIndexes(ctx context.Context, database, collectionName string, structure map[string]interface{}) ([]string, error) {
-	coll := c.client.Database(database).Collection(collectionName)
-	var commands []string
-
-	// 获取当前索引
-	currentIndexes, err := coll.Indexes().List(ctx)
-	if err != nil {
-		return nil, fmt.Errorf("获取当前索引失败: %v", err)
-	}
-	defer currentIndexes.Close(ctx)
-
-	// 解析新的索引数据
-	var newIndexes []map[string]interface{}
-	if idxs, ok := structure["indexes"].([]interface{}); ok {
-		for _, idx := range idxs {
-			if idxMap, ok := idx.(map[string]interface{}); ok {
-				newIndexes = append(newIndexes, idxMap)
-			}
-		}
-	}
-
-	// 创建当前索引名映射
-	currentIndexMap := make(map[string]bool)
-	for currentIndexes.Next(ctx) {
-		var indexSpec bson.M
-		if err := currentIndexes.Decode(&indexSpec); err != nil {
-			continue
-		}
-		if name, ok := indexSpec["name"].(string); ok && name != "_id_" {
-			currentIndexMap[name] = true
-		}
-	}
-
-	// 创建新索引名映射
-	newIndexMap := make(map[string]bool)
-	for _, idx := range newIndexes {
-		if name, ok := idx["name"].(string); ok && name != "" && name != "_id_" {
-			newIndexMap[name] = true
-		}
-	}
-
-	// 删除不存在的索引
-	for name := range currentIndexMap {
-		if !newIndexMap[name] {
-			cmd := fmt.Sprintf("db.%s.dropIndex(\"%s\")", collectionName, name)
-			commands = append(commands, cmd)
-		}
-	}
-
-	// 添加或更新索引
-	for _, idx := range newIndexes {
-		name, _ := idx["name"].(string)
-		if name == "" || name == "_id_" {
-			continue
-		}
-
-		// 构建索引键
-		keys := bson.D{}
-		if keysData, ok := idx["keys"].(map[string]interface{}); ok {
-			for k, v := range keysData {
-				var order int
-				if vFloat, ok := v.(float64); ok {
-					order = int(vFloat)
-				} else if vInt, ok := v.(int); ok {
-					order = vInt
-				} else {
-					order = 1 // 默认升序
-				}
-				keys = append(keys, bson.E{Key: k, Value: order})
-			}
-		} else if columnName, ok := idx["Column_name"].(string); ok && columnName != "" {
-			// 兼容 MySQL 格式的索引数据
-			keys = append(keys, bson.E{Key: columnName, Value: 1})
-		}
-
-		if len(keys) == 0 {
-			continue
-		}
-
-		// 构建索引选项，并跟踪 unique 状态（v2: IndexOptionsBuilder 无 Unique 字段可读）
-		indexOptions := options.Index()
-		indexOptions.SetName(name)
-
-		isUnique := false
-		if unique, ok := idx["unique"].(bool); ok && unique {
-			indexOptions.SetUnique(true)
-			isUnique = true
-		} else if nonUnique, ok := idx["Non_unique"].(float64); ok && nonUnique == 0 {
-			indexOptions.SetUnique(true)
-			isUnique = true
-		}
-
-		// 如果索引已存在，先删除再创建
-		if currentIndexMap[name] {
-			dropCmd := fmt.Sprintf("db.%s.dropIndex(\"%s\")", collectionName, name)
-			commands = append(commands, dropCmd)
-		}
-
-		// 构建命令字符串（MongoDB shell 格式）
-		keysStr := "{"
-		for i, key := range keys {
-			if i > 0 {
-				keysStr += ", "
-			}
-			keysStr += fmt.Sprintf("%s: %d", key.Key, key.Value)
-		}
-		keysStr += "}"
-
-		optionsStr := "{name: \"" + name + "\""
-		if isUnique {
-			optionsStr += ", unique: true"
-		}
-		optionsStr += "}"
-
-		cmd := fmt.Sprintf("db.%s.createIndex(%s, %s)", collectionName, keysStr, optionsStr)
-		commands = append(commands, cmd)
-	}
-
-	return commands, nil
-}
-
-// UpdateCollectionIndexes 更新集合索引，返回执行的命令列表
-func (c *MongoClient) UpdateCollectionIndexes(ctx context.Context, database, collectionName string, structure map[string]interface{}) ([]string, error) {
-	// 先预览生成命令列表
-	commands, err := c.PreviewCollectionIndexes(ctx, database, collectionName, structure)
-	if err != nil {
-		return nil, err
-	}
-
-	coll := c.client.Database(database).Collection(collectionName)
-
-	// 获取当前索引
-	currentIndexes, err := coll.Indexes().List(ctx)
-	if err != nil {
-		return commands, fmt.Errorf("获取当前索引失败: %v", err)
-	}
-	defer currentIndexes.Close(ctx)
-
-	// 解析新的索引数据
-	var newIndexes []map[string]interface{}
-	if idxs, ok := structure["indexes"].([]interface{}); ok {
-		for _, idx := range idxs {
-			if idxMap, ok := idx.(map[string]interface{}); ok {
-				newIndexes = append(newIndexes, idxMap)
-			}
-		}
-	}
-
-	// 创建当前索引名映射
-	currentIndexMap := make(map[string]bool)
-	for currentIndexes.Next(ctx) {
-		var indexSpec bson.M
-		if err := currentIndexes.Decode(&indexSpec); err != nil {
-			continue
-		}
-		if name, ok := indexSpec["name"].(string); ok && name != "_id_" {
-			currentIndexMap[name] = true
-		}
-	}
-
-	// 创建新索引名映射
-	newIndexMap := make(map[string]bool)
-	for _, idx := range newIndexes {
-		if name, ok := idx["name"].(string); ok && name != "" && name != "_id_" {
-			newIndexMap[name] = true
-		}
-	}
-
-	// 删除不存在的索引
-	for name := range currentIndexMap {
-		if !newIndexMap[name] {
-			// v2: DropOne 只返回 error，不再返回 bson.Raw
-			err := coll.Indexes().DropOne(ctx, name)
-			if err != nil {
-				return commands, fmt.Errorf("删除索引失败: %v, 索引名: %s", err, name)
-			}
-		}
-	}
-
-	// 添加或更新索引
-	for _, idx := range newIndexes {
-		name, _ := idx["name"].(string)
-		if name == "" || name == "_id_" {
-			continue
-		}
-
-		// 构建索引键
-		keys := bson.D{}
-		if keysData, ok := idx["keys"].(map[string]interface{}); ok {
-			for k, v := range keysData {
-				var order int
-				if vFloat, ok := v.(float64); ok {
-					order = int(vFloat)
-				} else if vInt, ok := v.(int); ok {
-					order = vInt
-				} else {
-					order = 1 // 默认升序
-				}
-				keys = append(keys, bson.E{Key: k, Value: order})
-			}
-		} else if columnName, ok := idx["Column_name"].(string); ok && columnName != "" {
-			// 兼容 MySQL 格式的索引数据
-			keys = append(keys, bson.E{Key: columnName, Value: 1})
-		}
-
-		if len(keys) == 0 {
-			continue
-		}
-
-		// 构建索引选项
-		indexOptions := options.Index()
-		indexOptions.SetName(name)
-
-		if unique, ok := idx["unique"].(bool); ok && unique {
-			indexOptions.SetUnique(true)
-		} else if nonUnique, ok := idx["Non_unique"].(float64); ok && nonUnique == 0 {
-			indexOptions.SetUnique(true)
-		}
-
-		// 创建索引
-		indexModel := mongo.IndexModel{
-			Keys:    keys,
-			Options: indexOptions,
-		}
-
-		// 如果索引已存在，先删除再创建
-		if currentIndexMap[name] {
-			// v2: DropOne 只返回 error，不再返回 bson.Raw
-			err := coll.Indexes().DropOne(ctx, name)
-			if err != nil {
-				return commands, fmt.Errorf("删除旧索引失败: %v, 索引名: %s", err, name)
-			}
-		}
-
-		_, err := coll.Indexes().CreateOne(ctx, indexModel)
-		if err != nil {
-			return commands, fmt.Errorf("创建索引失败: %v, 索引名: %s", err, name)
-		}
-	}
-
-	return commands, nil
-}
--- a/internal/dbclient/mysql.go
+++ b/internal/dbclient/mysql.go
@@ -1,875 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"database/sql"
-	"fmt"
-	"strings"
-	"time"
-
-	mysqldriver "github.com/go-sql-driver/mysql"
-	"gorm.io/driver/mysql"
-	"gorm.io/gorm"
-	"gorm.io/gorm/logger"
-)
-
-// MySQLClient MySQL 客户端
-type MySQLClient struct {
-	db     *gorm.DB
-	sqlDB  *sql.DB
-	config *MySQLConfig
-}
-
-// MySQLConfig MySQL 配置
-type MySQLConfig struct {
-	Host     string
-	Port     int
-	Username string
-	Password string
-	Database string
-}
-
-// NewMySQLClient 创建 MySQL 客户端
-func NewMySQLClient(config *MySQLConfig) (*MySQLClient, error) {
-	// 构建 DSN
-	mysqlConfig := mysqldriver.Config{
-		User:   config.Username,
-		Passwd: config.Password,
-		Net:    "tcp",
-		Addr:   fmt.Sprintf("%s:%d", config.Host, config.Port),
-		DBName: config.Database,
-		Params: map[string]string{
-			"charset":         "utf8mb4",
-			"parseTime":       "True",
-			"loc":             "Local",
-			"multiStatements": "true", // 支持多条SQL语句执行
-		},
-		AllowNativePasswords: true,
-		Timeout:              5 * time.Second,
-	}
-	dsn := mysqlConfig.FormatDSN()
-
-	// GORM 配置
-	gormConfig := &gorm.Config{
-		Logger: logger.Default.LogMode(logger.Silent),
-	}
-
-	// 打开连接
-	db, err := gorm.Open(mysql.Open(dsn), gormConfig)
-	if err != nil {
-		return nil, fmt.Errorf("连接 MySQL 失败: %v", err)
-	}
-
-	// 获取底层 sql.DB
-	sqlDB, err := db.DB()
-	if err != nil {
-		return nil, fmt.Errorf("获取数据库实例失败: %v", err)
-	}
-
-	// 测试连接
-	if err := sqlDB.Ping(); err != nil {
-		return nil, fmt.Errorf("MySQL 连接测试失败: %v", err)
-	}
-
-	// 设置连接池参数
-	sqlDB.SetMaxOpenConns(10)
-	sqlDB.SetMaxIdleConns(2)
-	sqlDB.SetConnMaxLifetime(5 * time.Minute)
-
-	return &MySQLClient{
-		db:     db,
-		sqlDB:  sqlDB,
-		config: config,
-	}, nil
-}
-
-// TestConnection 测试连接
-func TestMySQLConnection(host string, port int, username, password, database string) error {
-	config := &MySQLConfig{
-		Host:     host,
-		Port:     port,
-		Username: username,
-		Password: password,
-		Database: database,
-	}
-	client, err := NewMySQLClient(config)
-	if err != nil {
-		return err
-	}
-	defer client.Close()
-	return nil
-}
-
-// Close 关闭连接
-func (c *MySQLClient) Close() error {
-	if c.sqlDB != nil {
-		return c.sqlDB.Close()
-	}
-	return nil
-}
-
-// QueryResult 查询结果，包含数据和列顺序
-type QueryResult struct {
-	Data    []map[string]interface{}
-	Columns []string
-}
-
-// ExecuteQuery 执行查询 SQL
-// database 参数可选，如果提供且不为空则优先使用，否则使用配置中的数据库
-// 注意：SQL 语句应该已经包含 LIMIT 和 OFFSET（由客户端添加）
-func (c *MySQLClient) ExecuteQuery(ctx context.Context, sqlStr string, database string) (*QueryResult, error) {
-	// 确定要使用的数据库
-	dbName := database
-	if dbName == "" {
-		dbName = c.config.Database
-	}
-
-	// 使用 Session 创建独立的数据库会话，避免影响其他查询
-	db := c.db.Session(&gorm.Session{})
-
-	// 如果指定了数据库，先切换到该数据库
-	if dbName != "" {
-		if err := db.Exec(fmt.Sprintf("USE `%s`", dbName)).Error; err != nil {
-			return nil, fmt.Errorf("切换数据库失败: %v", err)
-		}
-	}
-
-	rows, err := db.Raw(sqlStr).Rows()
-	if err != nil {
-		return nil, fmt.Errorf("执行查询失败: %v", err)
-	}
-	defer rows.Close()
-
-	// 检查 rows 错误
-	if err := rows.Err(); err != nil {
-		return nil, fmt.Errorf("查询结果错误: %v", err)
-	}
-
-	// 获取列名
-	columns, err := rows.Columns()
-	if err != nil {
-		return nil, fmt.Errorf("获取列名失败: %v", err)
-	}
-
-	// 如果没有列，返回空数组
-	if len(columns) == 0 {
-		return &QueryResult{
-			Data:    []map[string]interface{}{},
-			Columns: []string{},
-		}, nil
-	}
-
-	// 读取数据
-	var results []map[string]interface{}
-	for rows.Next() {
-		// 创建值数组和指针数组
-		values := make([]interface{}, len(columns))
-		valuePtrs := make([]interface{}, len(columns))
-		for i := range values {
-			valuePtrs[i] = &values[i]
-		}
-
-		// 扫描行数据
-		if err := rows.Scan(valuePtrs...); err != nil {
-			return nil, fmt.Errorf("扫描数据失败: %v", err)
-		}
-
-		// 构建结果 map，按照列顺序构建
-		row := make(map[string]interface{})
-		for i, col := range columns {
-			val := values[i]
-			// 处理 nil 值
-			if val == nil {
-				row[col] = nil
-			} else if b, ok := val.([]byte); ok {
-				// 处理 []byte 类型
-				row[col] = string(b)
-			} else {
-				row[col] = val
-			}
-		}
-		results = append(results, row)
-	}
-
-	// 检查迭代过程中的错误
-	if err := rows.Err(); err != nil {
-		return nil, fmt.Errorf("读取数据时发生错误: %v", err)
-	}
-
-	return &QueryResult{
-		Data:    results,
-		Columns: columns,
-	}, nil
-}
-
-// ExecuteUpdate 执行更新 SQL（INSERT/UPDATE/DELETE）
-// database 参数可选，如果提供且不为空则优先使用，否则使用配置中的数据库
-func (c *MySQLClient) ExecuteUpdate(ctx context.Context, sqlStr string, database string) (int64, error) {
-	// 确定要使用的数据库
-	dbName := database
-	if dbName == "" {
-		dbName = c.config.Database
-	}
-
-	// 使用 Session 创建独立的数据库会话，避免影响其他查询
-	db := c.db.Session(&gorm.Session{})
-
-	// 如果指定了数据库，先切换到该数据库
-	if dbName != "" {
-		if err := db.Exec(fmt.Sprintf("USE `%s`", dbName)).Error; err != nil {
-			return 0, fmt.Errorf("切换数据库失败: %v", err)
-		}
-	}
-
-	result := db.Exec(sqlStr)
-	if result.Error != nil {
-		return 0, fmt.Errorf("执行更新失败: %v", result.Error)
-	}
-	return result.RowsAffected, nil
-}
-
-// ListDatabases 获取数据库列表
-func (c *MySQLClient) ListDatabases(ctx context.Context) ([]string, error) {
-	var databases []string
-	err := c.db.Raw("SHOW DATABASES").Scan(&databases).Error
-	return databases, err
-}
-
-// ListTables 获取表列表
-func (c *MySQLClient) ListTables(ctx context.Context, database string) ([]string, error) {
-	var tables []string
-	query := "SHOW TABLES"
-	if database != "" {
-		query = fmt.Sprintf("SHOW TABLES FROM `%s`", database)
-	}
-	err := c.db.Raw(query).Scan(&tables).Error
-	return tables, err
-}
-
-// GetTableStructure 获取表结构
-func (c *MySQLClient) GetTableStructure(ctx context.Context, database, tableName string) ([]map[string]interface{}, error) {
-	// 使用 SHOW FULL COLUMNS 来获取包含 comment 的完整字段信息
-	query := fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`", tableName)
-	if database != "" {
-		query = fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`.`%s`", database, tableName)
-	}
-
-	rows, err := c.db.Raw(query).Rows()
-	if err != nil {
-		return nil, fmt.Errorf("获取表结构失败: %v", err)
-	}
-	defer rows.Close()
-
-	columns, err := rows.Columns()
-	if err != nil {
-		return nil, fmt.Errorf("获取列名失败: %v", err)
-	}
-
-	var results []map[string]interface{}
-	for rows.Next() {
-		values := make([]interface{}, len(columns))
-		valuePtrs := make([]interface{}, len(columns))
-		for i := range values {
-			valuePtrs[i] = &values[i]
-		}
-
-		if err := rows.Scan(valuePtrs...); err != nil {
-			return nil, fmt.Errorf("扫描数据失败: %v", err)
-		}
-
-		row := make(map[string]interface{})
-		for i, col := range columns {
-			val := values[i]
-			if b, ok := val.([]byte); ok {
-				row[col] = string(b)
-			} else if val == nil {
-				row[col] = nil
-			} else {
-				row[col] = val
-			}
-		}
-
-		// 确保 Comment 字段存在（SHOW FULL COLUMNS 返回的字段名是 Comment）
-		if _, ok := row["Comment"]; !ok {
-			row["Comment"] = ""
-		}
-
-		results = append(results, row)
-	}
-
-	return results, nil
-}
-
-// GetIndexes 获取索引列表
-func (c *MySQLClient) GetIndexes(ctx context.Context, database, tableName string) ([]map[string]interface{}, error) {
-	query := "SHOW INDEX FROM "
-	if database != "" {
-		query += fmt.Sprintf("`%s`.", database)
-	}
-	query += fmt.Sprintf("`%s`", tableName)
-
-	rows, err := c.db.Raw(query).Rows()
-	if err != nil {
-		return nil, fmt.Errorf("获取索引列表失败: %v", err)
-	}
-	defer rows.Close()
-
-	columns, err := rows.Columns()
-	if err != nil {
-		return nil, fmt.Errorf("获取列名失败: %v", err)
-	}
-
-	var results []map[string]interface{}
-	for rows.Next() {
-		values := make([]interface{}, len(columns))
-		valuePtrs := make([]interface{}, len(columns))
-		for i := range values {
-			valuePtrs[i] = &values[i]
-		}
-
-		if err := rows.Scan(valuePtrs...); err != nil {
-			return nil, fmt.Errorf("扫描数据失败: %v", err)
-		}
-
-		row := make(map[string]interface{})
-		for i, col := range columns {
-			val := values[i]
-			if b, ok := val.([]byte); ok {
-				row[col] = string(b)
-			} else {
-				row[col] = val
-			}
-		}
-		results = append(results, row)
-	}
-
-	return results, nil
-}
-
-// PreviewTableStructure 预览表结构变更，只生成 SQL 语句不执行
-func (c *MySQLClient) PreviewTableStructure(ctx context.Context, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	// 获取当前表结构
-	currentColumns, err := c.GetTableStructure(ctx, database, tableName)
-	if err != nil {
-		return nil, fmt.Errorf("获取当前表结构失败: %v", err)
-	}
-
-	currentIndexes, err := c.GetIndexes(ctx, database, tableName)
-	if err != nil {
-		return nil, fmt.Errorf("获取当前索引失败: %v", err)
-	}
-
-	// 解析新的结构数据
-	var newColumns []map[string]interface{}
-	var newIndexes []map[string]interface{}
-
-	if cols, ok := structure["columns"].([]interface{}); ok {
-		for _, col := range cols {
-			if colMap, ok := col.(map[string]interface{}); ok {
-				newColumns = append(newColumns, colMap)
-			}
-		}
-	}
-
-	if idxs, ok := structure["indexes"].([]interface{}); ok {
-		for _, idx := range idxs {
-			if idxMap, ok := idx.(map[string]interface{}); ok {
-				newIndexes = append(newIndexes, idxMap)
-			}
-		}
-	}
-
-	// 构建 ALTER TABLE 语句
-	var alterStatements []string
-
-	// 处理字段变更
-	alterStatements = append(alterStatements, c.buildColumnAlterStatements(tableName, currentColumns, newColumns)...)
-
-	// 处理索引变更
-	alterStatements = append(alterStatements, c.buildIndexAlterStatements(tableName, currentIndexes, newIndexes)...)
-
-	return alterStatements, nil
-}
-
-// UpdateTableStructure 更新表结构，返回生成的 SQL 语句列表
-func (c *MySQLClient) UpdateTableStructure(ctx context.Context, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	// 先预览生成 SQL 语句
-	alterStatements, err := c.PreviewTableStructure(ctx, database, tableName, structure)
-	if err != nil {
-		return nil, err
-	}
-
-	// 执行所有 ALTER TABLE 语句
-	if len(alterStatements) > 0 {
-		dbName := database
-		if dbName == "" {
-			dbName = c.config.Database
-		}
-
-		db := c.db.Session(&gorm.Session{})
-		if dbName != "" {
-			if err := db.Exec(fmt.Sprintf("USE `%s`", dbName)).Error; err != nil {
-				return alterStatements, fmt.Errorf("切换数据库失败: %v", err)
-			}
-		}
-
-		for _, stmt := range alterStatements {
-			if err := db.Exec(stmt).Error; err != nil {
-				return alterStatements, fmt.Errorf("执行 ALTER TABLE 失败: %v, SQL: %s", err, stmt)
-			}
-		}
-	}
-
-	return alterStatements, nil
-}
-
-// buildColumnAlterStatements 构建字段变更的 ALTER TABLE 语句
-func (c *MySQLClient) buildColumnAlterStatements(tableName string, currentColumns, newColumns []map[string]interface{}) []string {
-	var statements []string
-
-	// 创建字段名映射和顺序映射
-	currentFieldMap := make(map[string]map[string]interface{})
-	currentFieldOrder := make([]string, 0, len(currentColumns))
-	for _, col := range currentColumns {
-		if field, ok := col["Field"].(string); ok {
-			currentFieldMap[field] = col
-			currentFieldOrder = append(currentFieldOrder, field)
-		}
-	}
-
-	newFieldMap := make(map[string]bool)
-	newFieldOrder := make([]string, 0, len(newColumns))
-	newColumnsMap := make(map[string]map[string]interface{})
-	for _, col := range newColumns {
-		if field, ok := col["Field"].(string); ok && field != "" {
-			newFieldMap[field] = true
-			newFieldOrder = append(newFieldOrder, field)
-			newColumnsMap[field] = col
-		}
-	}
-
-	// 检测字段重命名：优先使用位置匹配，如果位置相同但字段名不同，认为是重命名
-	renameMap := make(map[string]string) // oldName -> newName
-	processedNewFields := make(map[string]bool)
-
-	// 第一步：使用位置匹配检测重命名（最可靠）
-	for oldIndex, oldFieldName := range currentFieldOrder {
-		if newFieldMap[oldFieldName] {
-			continue // 字段名未改变，跳过
-		}
-
-		// 检查新字段列表中相同位置是否有字段
-		if oldIndex < len(newFieldOrder) {
-			newFieldName := newFieldOrder[oldIndex]
-			_, existsInCurrent := currentFieldMap[newFieldName]
-			if !existsInCurrent && !processedNewFields[newFieldName] {
-				// 新字段不在当前字段列表中，且位置相同，很可能是重命名
-				// 进一步验证：检查类型是否相同（类型相同更可能是重命名）
-				oldCol := currentFieldMap[oldFieldName]
-				newCol := newColumnsMap[newFieldName]
-				oldType := getStringValue(oldCol["Type"])
-				newType := getStringValue(newCol["Type"])
-
-				// 如果类型相同，认为是重命名
-				if oldType == newType {
-					renameMap[oldFieldName] = newFieldName
-					processedNewFields[newFieldName] = true
-					continue
-				}
-			}
-		}
-	}
-
-	// 第二步：对于未匹配的字段，使用属性匹配（兼容旧逻辑）
-	for oldFieldName, oldCol := range currentFieldMap {
-		if newFieldMap[oldFieldName] {
-			continue // 字段名未改变，跳过
-		}
-		if renameMap[oldFieldName] != "" {
-			continue // 已经通过位置匹配识别为重命名
-		}
-
-		// 查找属性完全匹配的新字段
-		var matchedNewField string
-		for newFieldName, newCol := range newColumnsMap {
-			if processedNewFields[newFieldName] {
-				continue // 已经被匹配过了
-			}
-			_, existsInCurrent := currentFieldMap[newFieldName]
-			if !existsInCurrent {
-				// 这是一个新增字段，检查属性是否匹配
-				if c.isColumnPropertiesEqual(oldCol, newCol) {
-					if matchedNewField == "" {
-						matchedNewField = newFieldName
-					} else {
-						// 有多个匹配，无法确定，不认为是重命名
-						matchedNewField = ""
-						break
-					}
-				}
-			}
-		}
-
-		// 如果找到唯一匹配，认为是重命名
-		if matchedNewField != "" {
-			renameMap[oldFieldName] = matchedNewField
-			processedNewFields[matchedNewField] = true
-		}
-	}
-
-	// 处理字段重命名
-	for oldName, newName := range renameMap {
-		stmt := fmt.Sprintf("ALTER TABLE `%s` RENAME COLUMN `%s` TO `%s`", tableName, oldName, newName)
-		statements = append(statements, stmt)
-	}
-
-	// 处理字段添加、修改和位置调整（排除已重命名的字段）
-	for i, newCol := range newColumns {
-		field, _ := newCol["Field"].(string)
-		if field == "" {
-			continue
-		}
-
-		// 检查是否是重命名的字段
-		isRenamed := false
-		var oldName string
-		for old, new := range renameMap {
-			if new == field {
-				isRenamed = true
-				oldName = old
-				break
-			}
-		}
-
-		if isRenamed {
-			// 重命名的字段：如果属性有变化，需要 MODIFY COLUMN
-			oldCol := currentFieldMap[oldName]
-			needsModify := c.isColumnChanged(oldCol, newCol)
-
-			// 检查顺序变化：使用旧字段名在 currentOrder 中查找位置，与新位置比较
-			oldIndex := -1
-			for idx, name := range currentFieldOrder {
-				if name == oldName {
-					oldIndex = idx
-					break
-				}
-			}
-			needsReorder := (oldIndex != -1 && oldIndex != i)
-
-			if needsModify || needsReorder {
-				// 重命名后需要修改属性或位置
-				stmt := c.buildModifyColumnStatement(tableName, field, newCol, newFieldOrder, i)
-				if stmt != "" {
-					statements = append(statements, stmt)
-				}
-			}
-			continue
-		}
-
-		if currentCol, exists := currentFieldMap[field]; exists {
-			// 修改现有字段
-			needsModify := c.isColumnChanged(currentCol, newCol)
-			needsReorder := c.isColumnOrderChanged(currentFieldOrder, newFieldOrder, field, i)
-
-			if needsModify || needsReorder {
-				stmt := c.buildModifyColumnStatement(tableName, field, newCol, newFieldOrder, i)
-				if stmt != "" {
-					statements = append(statements, stmt)
-				}
-			}
-		} else {
-			// 添加新字段（排除重命名的字段）
-			stmt := c.buildAddColumnStatement(tableName, newCol, newFieldOrder, i)
-			if stmt != "" {
-				statements = append(statements, stmt)
-			}
-		}
-	}
-
-	// 删除不存在的字段（排除已重命名的字段）
-	for field := range currentFieldMap {
-		if !newFieldMap[field] && renameMap[field] == "" {
-			stmt := fmt.Sprintf("ALTER TABLE `%s` DROP COLUMN `%s`", tableName, field)
-			statements = append(statements, stmt)
-		}
-	}
-
-	return statements
-}
-
-// buildIndexAlterStatements 构建索引变更的 ALTER TABLE 语句
-func (c *MySQLClient) buildIndexAlterStatements(tableName string, currentIndexes, newIndexes []map[string]interface{}) []string {
-	var statements []string
-
-	// 创建索引名映射
-	currentIndexMap := make(map[string]map[string]interface{})
-	for _, idx := range currentIndexes {
-		if keyName, ok := idx["Key_name"].(string); ok && keyName != "PRIMARY" {
-			currentIndexMap[keyName] = idx
-		}
-	}
-
-	newIndexMap := make(map[string]bool)
-	for _, idx := range newIndexes {
-		if keyName, ok := idx["Key_name"].(string); ok && keyName != "" && keyName != "PRIMARY" {
-			newIndexMap[keyName] = true
-		}
-	}
-
-	// 处理索引变更
-	for _, newIdx := range newIndexes {
-		keyName, _ := newIdx["Key_name"].(string)
-		if keyName == "" || keyName == "PRIMARY" {
-			continue
-		}
-
-		if currentIdx, exists := currentIndexMap[keyName]; exists {
-			// 修改现有索引
-			if c.isIndexChanged(currentIdx, newIdx) {
-				dropStmt := fmt.Sprintf("ALTER TABLE `%s` DROP INDEX `%s`", tableName, keyName)
-				addStmt := c.buildAddIndexStatement(tableName, newIdx)
-				if addStmt != "" {
-					statements = append(statements, dropStmt)
-					statements = append(statements, addStmt)
-				}
-			}
-		} else {
-			// 添加新索引
-			stmt := c.buildAddIndexStatement(tableName, newIdx)
-			if stmt != "" {
-				statements = append(statements, stmt)
-			}
-		}
-	}
-
-	// 删除不存在的索引
-	for keyName := range currentIndexMap {
-		if !newIndexMap[keyName] {
-			stmt := fmt.Sprintf("ALTER TABLE `%s` DROP INDEX `%s`", tableName, keyName)
-			statements = append(statements, stmt)
-		}
-	}
-
-	return statements
-}
-
-// isColumnChanged 检查字段是否发生变化（不包括字段名）
-func (c *MySQLClient) isColumnChanged(oldCol, newCol map[string]interface{}) bool {
-	fields := []string{"Type", "Null", "Default", "Extra", "Comment"}
-	for _, field := range fields {
-		oldVal := getStringValue(oldCol[field])
-		newVal := getStringValue(newCol[field])
-		if oldVal != newVal {
-			return true
-		}
-	}
-	return false
-}
-
-// isColumnPropertiesEqual 检查字段属性是否完全相等（不包括字段名）
-func (c *MySQLClient) isColumnPropertiesEqual(oldCol, newCol map[string]interface{}) bool {
-	fields := []string{"Type", "Null", "Default", "Extra", "Key", "Comment"}
-	for _, field := range fields {
-		oldVal := getStringValue(oldCol[field])
-		newVal := getStringValue(newCol[field])
-		if oldVal != newVal {
-			return false
-		}
-	}
-	return true
-}
-
-// isColumnOrderChanged 检查字段顺序是否发生变化
-func (c *MySQLClient) isColumnOrderChanged(currentOrder, newOrder []string, fieldName string, newIndex int) bool {
-	// 查找字段在当前顺序中的位置
-	currentIndex := -1
-	for i, name := range currentOrder {
-		if name == fieldName {
-			currentIndex = i
-			break
-		}
-	}
-
-	// 如果字段不存在于当前顺序中（新字段），不需要检查顺序
-	if currentIndex == -1 {
-		return false
-	}
-
-	// 如果索引相同，检查前面的字段是否相同
-	if newIndex == currentIndex {
-		// 检查前面的字段集合是否相同
-		if newIndex > 0 {
-			currentPrevFields := make(map[string]bool)
-			for i := 0; i < currentIndex; i++ {
-				currentPrevFields[currentOrder[i]] = true
-			}
-
-			newPrevFields := make(map[string]bool)
-			for i := 0; i < newIndex; i++ {
-				newPrevFields[newOrder[i]] = true
-			}
-
-			// 如果前面的字段集合不同，说明顺序变了
-			if len(currentPrevFields) != len(newPrevFields) {
-				return true
-			}
-			for f := range currentPrevFields {
-				if !newPrevFields[f] {
-					return true
-				}
-			}
-		}
-		return false
-	}
-
-	// 索引不同，说明顺序变了
-	return true
-}
-
-// isIndexChanged 检查索引是否发生变化
-func (c *MySQLClient) isIndexChanged(oldIdx, newIdx map[string]interface{}) bool {
-	oldCol := getStringValue(oldIdx["Column_name"])
-	newCol := getStringValue(newIdx["Column_name"])
-	if oldCol != newCol {
-		return true
-	}
-
-	oldUnique := getIntValue(oldIdx["Non_unique"])
-	newUnique := getIntValue(newIdx["Non_unique"])
-	return oldUnique != newUnique
-}
-
-// buildAddColumnStatement 构建添加字段的语句
-func (c *MySQLClient) buildAddColumnStatement(tableName string, col map[string]interface{}, fieldOrder []string, index int) string {
-	field := getStringValue(col["Field"])
-	if field == "" {
-		return ""
-	}
-
-	colDef := c.buildColumnDefinition(col)
-
-	// 确定字段位置
-	position := c.buildColumnPosition(fieldOrder, index)
-
-	return fmt.Sprintf("ALTER TABLE `%s` ADD COLUMN %s%s", tableName, colDef, position)
-}
-
-// buildModifyColumnStatement 构建修改字段的语句
-func (c *MySQLClient) buildModifyColumnStatement(tableName, field string, col map[string]interface{}, fieldOrder []string, index int) string {
-	colDef := c.buildColumnDefinition(col)
-
-	// 确定字段位置
-	position := c.buildColumnPosition(fieldOrder, index)
-
-	return fmt.Sprintf("ALTER TABLE `%s` MODIFY COLUMN %s%s", tableName, colDef, position)
-}
-
-// buildColumnPosition 构建字段位置子句（AFTER 或 FIRST）
-func (c *MySQLClient) buildColumnPosition(fieldOrder []string, index int) string {
-	if index < 0 || index >= len(fieldOrder) {
-		return ""
-	}
-
-	if index == 0 {
-		// 第一个字段使用 FIRST
-		return " FIRST"
-	}
-
-	// 其他字段使用 AFTER 前一个字段
-	prevField := fieldOrder[index-1]
-	return fmt.Sprintf(" AFTER `%s`", prevField)
-}
-
-// buildColumnDefinition 构建字段定义
-func (c *MySQLClient) buildColumnDefinition(col map[string]interface{}) string {
-	field := getStringValue(col["Field"])
-	colType := getStringValue(col["Type"])
-	null := getStringValue(col["Null"])
-	defaultVal := col["Default"]
-	extra := getStringValue(col["Extra"])
-	comment := getStringValue(col["Comment"])
-
-	def := fmt.Sprintf("`%s` %s", field, colType)
-
-	if null == "NO" {
-		def += " NOT NULL"
-	}
-
-	if defaultVal != nil {
-		if defaultStr, ok := defaultVal.(string); ok {
-			if defaultStr == "" {
-				// 空字符串表示默认值为空字符串
-				def += " DEFAULT ''"
-			} else if defaultStr != "NULL" {
-				// 转义单引号
-				escapedDefault := strings.ReplaceAll(defaultStr, "'", "''")
-				def += fmt.Sprintf(" DEFAULT '%s'", escapedDefault)
-			}
-			// 如果 defaultStr == "NULL"，不添加 DEFAULT 子句（允许 NULL）
-		} else {
-			// 非字符串类型的默认值
-			def += fmt.Sprintf(" DEFAULT %v", defaultVal)
-		}
-	}
-
-	if extra != "" {
-		def += " " + extra
-	}
-
-	if comment != "" {
-		// 转义单引号
-		escapedComment := strings.ReplaceAll(comment, "'", "''")
-		def += fmt.Sprintf(" COMMENT '%s'", escapedComment)
-	}
-
-	return def
-}
-
-// buildAddIndexStatement 构建添加索引的语句
-func (c *MySQLClient) buildAddIndexStatement(tableName string, idx map[string]interface{}) string {
-	keyName := getStringValue(idx["Key_name"])
-	columnName := getStringValue(idx["Column_name"])
-	nonUnique := getIntValue(idx["Non_unique"])
-
-	if keyName == "" || columnName == "" {
-		return ""
-	}
-
-	indexType := "INDEX"
-	if nonUnique == 0 {
-		indexType = "UNIQUE INDEX"
-	}
-
-	return fmt.Sprintf("ALTER TABLE `%s` ADD %s `%s` (`%s`)", tableName, indexType, keyName, columnName)
-}
-
-// getStringValue 安全获取字符串值
-func getStringValue(v interface{}) string {
-	if v == nil {
-		return ""
-	}
-	if s, ok := v.(string); ok {
-		return s
-	}
-	return fmt.Sprintf("%v", v)
-}
-
-// getIntValue 安全获取整数值
-func getIntValue(v interface{}) int {
-	if v == nil {
-		return 0
-	}
-	switch val := v.(type) {
-	case int:
-		return val
-	case int64:
-		return int(val)
-	case float64:
-		return int(val)
-	case string:
-		var i int
-		fmt.Sscanf(val, "%d", &i)
-		return i
-	}
-	return 0
-}
--- a/internal/dbclient/pool.go
+++ b/internal/dbclient/pool.go
@@ -1,393 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"sync"
-	"time"
-
-	"u-desk/internal/common"
-	"u-desk/internal/crypto"
-	"u-desk/internal/storage/models"
-)
-
-// ConnectionPool 连接池管理器
-type ConnectionPool struct {
-	mysqlClients map[uint]*MySQLClient
-	redisClients map[uint]*RedisClient
-	mongoClients map[uint]*MongoClient
-
-	// 新增：MySQL 真连接池
-	mysqlPool     *MySQLConnectionPool
-	
-	// 查询优化器
-	queryOptimizer *QueryOptimizer
-
-	mu           sync.RWMutex
-}
-
-var (
-	globalPool *ConnectionPool
-	poolOnce   sync.Once
-)
-
-// GetPool 获取全局连接池实例
-func GetPool() *ConnectionPool {
-	poolOnce.Do(func() {
-		// 创建 MySQL 连接池
-		poolConfig := DefaultPoolConfig()
-
-		mysqlPool := NewMySQLConnectionPool(poolConfig)
-		// 启动维护协程
-		mysqlPool.StartMaintenance()
-
-		// 创建查询优化器
-		queryOptimizer := NewQueryOptimizer(nil)
-
-		globalPool = &ConnectionPool{
-			mysqlClients: make(map[uint]*MySQLClient),
-			redisClients: make(map[uint]*RedisClient),
-			mongoClients: make(map[uint]*MongoClient),
-			mysqlPool:     mysqlPool,
-			queryOptimizer: queryOptimizer,
-		}
-	})
-	return globalPool
-}
-
-// PooledClient 带释放语义的客户端包装
-type PooledClient struct {
-	Client  *MySQLClient
-	entry   *MySQLPoolEntry
-	pool    *MySQLConnectionPool
-	fromPool bool
-}
-
-// Release 释放连接回连接池
-func (pc *PooledClient) Release() {
-	if pc.fromPool && pc.pool != nil && pc.entry != nil {
-		pc.pool.Release(pc.entry)
-	}
-}
-
-// GetMySQLClient 获取或创建 MySQL 客户端（使用连接池）
-func (p *ConnectionPool) GetMySQLClient(conn *models.DbConnection) *PooledClient {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	// 尝试从连接池获取连接
-	if p.mysqlPool != nil {
-		entry, err := p.mysqlPool.Acquire(conn)
-		if err == nil {
-			return &PooledClient{Client: entry.Client, entry: entry, pool: p.mysqlPool, fromPool: true}
-		}
-		p.logPoolError("Acquire failed", err)
-	}
-
-	// 降级到原有逻辑
-	client, err := p.getMySQLClientLegacy(conn)
-	if err != nil {
-		return &PooledClient{Client: nil, fromPool: false}
-	}
-	return &PooledClient{Client: client, fromPool: false}
-}
-
-// logPoolError 记录连接池错误
-func (p *ConnectionPool) logPoolError(operation string, err error) {
-	if p.queryOptimizer != nil {
-		// 通过查询优化器记录错误
-		p.queryOptimizer.RecordPoolError(operation, err)
-	}
-}
-
-// getMySQLClientLegacy 原有的 MySQL 客户端获取逻辑（向后兼容）
-func (p *ConnectionPool) getMySQLClientLegacy(conn *models.DbConnection) (*MySQLClient, error) {
-	// 检查是否已存在
-	if client, ok := p.mysqlClients[conn.ID]; ok {
-		// 测试连接是否有效
-		if err := client.sqlDB.Ping(); err == nil {
-			return client, nil
-		}
-		// 连接已断开，移除并重新创建
-		client.Close()
-		delete(p.mysqlClients, conn.ID)
-	}
-
-	// 解密密码
-	password, err := crypto.DecryptPassword(conn.Password)
-	if err != nil {
-		return nil, fmt.Errorf("密码解密失败: %v", err)
-	}
-
-	// 创建新客户端
-	config := &MySQLConfig{
-		Host:     conn.Host,
-		Port:     conn.Port,
-		Username: conn.Username,
-		Password: password, // 如果密码为空，MySQL会尝试无密码连接
-		Database: conn.Database,
-	}
-
-	client, err := NewMySQLClient(config)
-	if err != nil {
-		return nil, err
-	}
-
-	p.mysqlClients[conn.ID] = client
-	return client, nil
-}
-
-// GetMySQLPoolStats 获取 MySQL 连接池统计信息
-func (p *ConnectionPool) GetMySQLPoolStats() *PoolStats {
-	if p.mysqlPool != nil {
-		stats := p.mysqlPool.Stats()
-		return &stats
-	}
-	return nil
-}
-
-// OptimizeQuery 优化查询执行
-func (p *ConnectionPool) OptimizeQuery(ctx context.Context, conn *models.DbConnection, sqlStr string, database string) (*QueryResult, time.Duration, error) {
-	pc := p.GetMySQLClient(conn)
-	if pc.Client == nil {
-		return nil, 0, fmt.Errorf("获取 MySQL 连接失败")
-	}
-	defer pc.Release()
-
-	// 使用查询优化器
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.OptimizeQuery(ctx, pc.Client, sqlStr, database)
-	}
-
-	// 降级到普通查询
-	startTime := time.Now()
-	result, err := pc.Client.ExecuteQuery(ctx, sqlStr, database)
-	duration := time.Since(startTime)
-	return result, duration, err
-}
-
-// ExecuteOptimizedUpdate 执行优化的更新操作
-func (p *ConnectionPool) ExecuteOptimizedUpdate(ctx context.Context, conn *models.DbConnection, sqlStr string, database string) (int64, time.Duration, error) {
-	pc := p.GetMySQLClient(conn)
-	if pc.Client == nil {
-		return 0, 0, fmt.Errorf("获取 MySQL 连接失败")
-	}
-	defer pc.Release()
-
-	// 使用查询优化器
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.ExecuteOptimizedUpdate(ctx, pc.Client, sqlStr, database)
-	}
-
-	// 降级到普通更新
-	startTime := time.Now()
-	result, err := pc.Client.ExecuteUpdate(ctx, sqlStr, database)
-	duration := time.Since(startTime)
-	return result, duration, err
-}
-
-// GetQueryStats 获取查询统计信息
-func (p *ConnectionPool) GetQueryStats() QueryStats {
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.GetQueryStats()
-	}
-	return QueryStats{}
-}
-
-// GetSlowQueries 获取慢查询记录
-func (p *ConnectionPool) GetSlowQueries(limit int) []SlowQuery {
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.GetSlowQueries(limit)
-	}
-	return []SlowQuery{}
-}
-
-// GetIndexSuggestions 获取索引建议
-func (p *ConnectionPool) GetIndexSuggestions(table string) []IndexSuggestion {
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.GetIndexSuggestions(table)
-	}
-	return []IndexSuggestion{}
-}
-
-// GenerateIndexSuggestions 为表生成索引建议
-func (p *ConnectionPool) GenerateIndexSuggestions(ctx context.Context, conn *models.DbConnection, database, table string) error {
-	pc := p.GetMySQLClient(conn)
-	if pc.Client == nil {
-		return fmt.Errorf("获取 MySQL 连接失败")
-	}
-	defer pc.Release()
-
-	// 使用查询优化器
-	if p.queryOptimizer != nil {
-		return p.queryOptimizer.GenerateIndexSuggestions(ctx, pc.Client, database, table)
-	}
-	return nil
-}
-
-// ClearQueryCache 清空查询缓存
-func (p *ConnectionPool) ClearQueryCache() {
-	if p.queryOptimizer != nil {
-		p.queryOptimizer.ClearCache()
-	}
-}
-
-// GetRedisClient 获取或创建 Redis 客户端
-func (p *ConnectionPool) GetRedisClient(conn *models.DbConnection) (*RedisClient, error) {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	// 检查是否已存在
-	if client, ok := p.redisClients[conn.ID]; ok {
-		// 测试连接是否有效
-		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutPing)
-		defer cancel()
-		if err := client.client.Ping(ctx).Err(); err == nil {
-			return client, nil
-		}
-		// 连接已断开，移除并重新创建
-		client.Close()
-		delete(p.redisClients, conn.ID)
-	}
-
-	// 解密密码
-	password, err := crypto.DecryptPassword(conn.Password)
-	if err != nil {
-		return nil, fmt.Errorf("密码解密失败: %v", err)
-	}
-
-	// 解析 Redis DB 编号（从 Database 字段，默认为 0）
-	dbNum := 0
-	if conn.Database != "" {
-		// 尝试解析 Database 字段为数字
-		_, err := fmt.Sscanf(conn.Database, "%d", &dbNum)
-		if err != nil {
-			// 如果解析失败，使用默认值 0
-			dbNum = 0
-		}
-		// 限制 DB 编号在 0-15 之间
-		if dbNum < 0 || dbNum > 15 {
-			dbNum = 0
-		}
-	}
-
-	// 创建新客户端
-	config := &RedisConfig{
-		Host:     conn.Host,
-		Port:     conn.Port,
-		Password: password,
-		DB:       dbNum,
-	}
-
-	client, err := NewRedisClient(config)
-	if err != nil {
-		return nil, err
-	}
-
-	p.redisClients[conn.ID] = client
-	return client, nil
-}
-
-// GetMongoClient 获取或创建 MongoDB 客户端
-func (p *ConnectionPool) GetMongoClient(conn *models.DbConnection) (*MongoClient, error) {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	// 检查是否已存在
-	if client, ok := p.mongoClients[conn.ID]; ok {
-		// 测试连接是否有效
-		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutPing)
-		defer cancel()
-		if err := client.client.Ping(ctx, nil); err == nil {
-			return client, nil
-		}
-		// 连接已断开，移除并重新创建
-		client.Close()
-		delete(p.mongoClients, conn.ID)
-	}
-
-	// 解密密码
-	password, err := crypto.DecryptPassword(conn.Password)
-	if err != nil {
-		return nil, fmt.Errorf("密码解密失败: %v", err)
-	}
-
-	// 解析 Options 获取 MongoDB 连接参数
-	authSource := ""
-	authMechanism := ""
-	if conn.Options != "" {
-		var opts map[string]interface{}
-		if err := json.Unmarshal([]byte(conn.Options), &opts); err == nil {
-			if as, ok := opts["authSource"].(string); ok && as != "" {
-				authSource = as
-			}
-			if am, ok := opts["authMechanism"].(string); ok && am != "" {
-				authMechanism = am
-			}
-		}
-	}
-
-	// 创建新客户端
-	config := &MongoConfig{
-		Host:          conn.Host,
-		Port:          conn.Port,
-		Username:      conn.Username,
-		Password:      password,
-		Database:      conn.Database,
-		AuthSource:    authSource,
-		AuthMechanism: authMechanism,
-	}
-
-	client, err := NewMongoClient(config)
-	if err != nil {
-		return nil, err
-	}
-
-	p.mongoClients[conn.ID] = client
-	return client, nil
-}
-
-// CloseConnection 关闭指定连接
-func (p *ConnectionPool) CloseConnection(connID uint, dbType string) {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	switch dbType {
-	case "mysql":
-		if client, ok := p.mysqlClients[connID]; ok {
-			client.Close()
-			delete(p.mysqlClients, connID)
-		}
-	case "redis":
-		if client, ok := p.redisClients[connID]; ok {
-			client.Close()
-			delete(p.redisClients, connID)
-		}
-	case "mongo":
-		if client, ok := p.mongoClients[connID]; ok {
-			client.Close()
-			delete(p.mongoClients, connID)
-		}
-	}
-}
-
-// CloseAll 关闭所有连接
-func (p *ConnectionPool) CloseAll() {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	for _, client := range p.mysqlClients {
-		client.Close()
-	}
-	for _, client := range p.redisClients {
-		client.Close()
-	}
-	for _, client := range p.mongoClients {
-		client.Close()
-	}
-
-	p.mysqlClients = make(map[uint]*MySQLClient)
-	p.redisClients = make(map[uint]*RedisClient)
-	p.mongoClients = make(map[uint]*MongoClient)
-}
--- a/internal/dbclient/pool_config.go
+++ b/internal/dbclient/pool_config.go
@@ -1,679 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"fmt"
-	"sync"
-	"time"
-
-	"u-desk/internal/crypto"
-	"u-desk/internal/storage/models"
-)
-
-// PoolConfig 连接池配置
-type PoolConfig struct {
-	// 最大打开连接数（硬上限）
-	MaxOpenConns int
-	// 最大空闲连接数（超过此数量的空闲连接会被关闭）
-	MaxIdleConns int
-	// 连接最大生命周期（超过此时间的连接会被关闭）
-	ConnMaxLifetime time.Duration
-	// 连接最大空闲时间（超过此时间未使用的连接会被关闭）
-	ConnMaxIdleTime time.Duration
-	// 最小空闲连接数（保持此数量的空闲连接以快速响应）
-	MinIdleConns int
-	// 连接超时时间（建立连接的最长时间）
-	ConnTimeout time.Duration
-	// 健康检查间隔（定期 Ping 连接检查有效性）
-	HealthCheckInterval time.Duration
-	// 是否启用连接预热（启动时建立最小连接）
-	EnableWarmup bool
-	// 是否启用慢连接日志（记录建立时间超过阈值的连接）
-	EnableSlowConnLog bool
-	// 慢连接阈值（超过此时间记录为慢连接）
-	SlowConnThreshold time.Duration
-	// 连接池最大容量（防止资源耗尽）
-	MaxPoolCapacity int
-	
-	// 动态连接池配置
-	EnableDynamicScaling bool     // 是否启用动态连接池调整
-	DynamicScaleFactor  float64  // 动态调整因子（0.5-2.0）
-	ScaleUpThreshold    float64  // 扩容阈值（0-1.0，当使用率超过此值时扩容）
-	ScaleDownThreshold  float64  // 缩容阈值（0-1.0，当使用率低于此值时缩容）
-	MinScaleUpInterval   time.Duration // 最小扩容间隔（防止频繁调整）
-	MinScaleDownInterval time.Duration // 最小缩容间隔
-	MaxIdleTimeForScale  time.Duration // 用于动态调整的最大空闲时间
-}
-
-// DefaultPoolConfig 返回默认连接池配置
-func DefaultPoolConfig() *PoolConfig {
-	return &PoolConfig{
-		MaxOpenConns:         50,                  // 最大50个连接（提高并发）
-		MaxIdleConns:         20,                  // 最大20个空闲（提高响应速度）
-		ConnMaxLifetime:       60 * time.Minute,    // 连接最长60分钟（延长连接生命周期）
-		ConnMaxIdleTime:       15 * time.Minute,    // 空闲15分钟关闭（更长的空闲时间）
-		MinIdleConns:         5,                   // 保持5个最小空闲（更好的响应性能）
-		ConnTimeout:           3 * time.Second,      // 连接超时3秒（更快失败）
-		HealthCheckInterval:   20 * time.Second,     // 20秒健康检查一次（更频繁的健康检查）
-		EnableWarmup:         true,                // 启用预热
-		EnableSlowConnLog:     true,                // 启用慢连接日志
-		SlowConnThreshold:     200 * time.Millisecond, // 超过200ms算慢连接（更严格的性能要求）
-		MaxPoolCapacity:      100,                 // 连接池最大容量（支持更高并发）
-		
-		// 动态连接池配置（更智能的调整策略）
-		EnableDynamicScaling: true,               // 启用动态调整
-		DynamicScaleFactor:   1.8,                // 调整因子1.8倍（更激进的扩容）
-		ScaleUpThreshold:     0.7,                // 使用率超过70%扩容（更早扩容）
-		ScaleDownThreshold:   0.4,                // 使用率低于40%缩容（避免频繁调整）
-		MinScaleUpInterval:   1 * time.Minute,     // 最小扩容间隔1分钟（更快的响应）
-		MinScaleDownInterval: 3 * time.Minute,     // 最小缩容间隔3分钟（稳定缩容）
-		MaxIdleTimeForScale:  20 * time.Minute,    // 用于调整的最大空闲时间
-	}
-}
-
-// MySQLPoolEntry MySQL 连接池条目
-type MySQLPoolEntry struct {
-	Client     *MySQLClient
-	LastUsed   time.Time
-	CreatedAt  time.Time
-	InUse      bool
-	mu         sync.Mutex
-}
-
-// AcquireResult 连接获取结果
-type AcquireResult struct {
-	Entry *MySQLPoolEntry
-	Err   error
-}
-
-// ReleaseResult 连接释放结果
-type ReleaseResult struct {
-	Success bool
-	Err     error
-}
-
-// Stats 连接池统计信息
-type PoolStats struct {
-		TotalConns    int       // 总连接数
-		ActiveConns   int       // 使用中的连接数
-		IdleConns     int       // 空闲连接数
-		WaitCount     int64     // 等待连接的次数
-		WaitDuration  time.Duration // 总等待时间
-	SlowConnCount int64     // 慢连接数量
-}
-
-// MySQLConnectionPool MySQL 连接池（真正的连接池）
-type MySQLConnectionPool struct {
-	config     *PoolConfig
-	configHash string            // 配置哈希，用于检测配置变更
-	mu         sync.RWMutex
-	entries    []*MySQLPoolEntry    // 连接池条目
-	connMap    map[uint]*MySQLClient // 连接ID -> 客户端映射（兼容现有代码）
-	stats      PoolStats
-	stopCh     chan struct{}
-	wg         sync.WaitGroup
-	
-	// 动态调整相关
-	lastScaleUpTime    time.Time       // 上次扩容时间
-	lastScaleDownTime  time.Time       // 上次缩容时间
-	currentTargetSize  int             // 当前目标连接数
-	usageHistory      []float64       // 使用率历史记录（用于智能调整）
-	adaptiveWeights    map[uint]float64 // 连接权重（基于性能表现）
-}
-
-// NewMySQLConnectionPool 创建新的 MySQL 连接池
-func NewMySQLConnectionPool(config *PoolConfig) *MySQLConnectionPool {
-	if config == nil {
-		config = DefaultPoolConfig()
-	}
-
-	pool := &MySQLConnectionPool{
-		config:           config,
-		entries:          make([]*MySQLPoolEntry, 0, config.MaxPoolCapacity),
-		connMap:          make(map[uint]*MySQLClient),
-		stopCh:           make(chan struct{}),
-		currentTargetSize: config.MinIdleConns,
-		usageHistory:    make([]float64, 0, 100), // 保留最近100个使用率记录
-		adaptiveWeights: make(map[uint]float64),
-	}
-
-	return pool
-}
-
-// Acquire 获取一个连接（阻塞等待直到有可用连接）
-func (p *MySQLConnectionPool) Acquire(conn *models.DbConnection) (*MySQLPoolEntry, error) {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	startTime := time.Now()
-
-	// 尝试获取最优连接（启用动态调整时）
-	if p.config.EnableDynamicScaling {
-		if entry, err := p.getOptimalConnection(); err == nil {
-			p.updateWaitStats(startTime)
-			return entry, nil
-		}
-	}
-
-	// 降级到标准逻辑 - 查找空闲连接
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		if !entry.InUse {
-			entry.InUse = true
-			entry.LastUsed = time.Now()
-			entry.mu.Unlock()
-
-			// 更新统计
-			p.updateWaitStats(startTime)
-
-			return entry, nil
-		}
-		entry.mu.Unlock()
-	}
-
-	// 没有可用连接，创建新连接
-	if len(p.entries) >= p.config.MaxOpenConns {
-		// 已达到最大连接数，等待
-		return p.waitForAvailableConnection(conn)
-	}
-
-	// 创建新连接（使用传入的连接配置）
-	newEntry, err := p.createNewEntry(conn)
-	if err != nil {
-		return nil, fmt.Errorf("创建连接失败: %v", err)
-	}
-
-	p.entries = append(p.entries, newEntry)
-	p.updateStats()
-	p.updateWaitStats(startTime)
-
-	return newEntry, nil
-}
-
-// Release 释放连接回池中
-func (p *MySQLConnectionPool) Release(entry *MySQLPoolEntry) error {
-	if entry == nil {
-		return nil
-	}
-
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	entry.mu.Lock()
-	entry.InUse = false
-	entry.LastUsed = time.Now()
-	entry.mu.Unlock()
-
-	p.updateStats()
-
-	return nil
-}
-
-// Close 关闭连接池
-func (p *MySQLConnectionPool) Close() error {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	// 发送停止信号
-	close(p.stopCh)
-
-	// 等待所有 goroutine 完成
-	p.wg.Wait()
-
-	// 关闭所有连接
-	var lastErr error
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		if err := entry.Client.Close(); err != nil {
-			lastErr = err
-		}
-		entry.InUse = false
-		entry.mu.Unlock()
-	}
-
-	p.entries = make([]*MySQLPoolEntry, 0, p.config.MaxPoolCapacity)
-	p.connMap = make(map[uint]*MySQLClient)
-
-	return lastErr
-}
-
-// Stats 获取连接池统计信息
-func (p *MySQLConnectionPool) Stats() PoolStats {
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	return p.stats
-}
-
-// cleanupIdleConnections 清理空闲连接
-func (p *MySQLConnectionPool) cleanupIdleConnections() {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	now := time.Now()
-	keepEntries := make([]*MySQLPoolEntry, 0, len(p.entries))
-
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		isIdle := !entry.InUse
-		idleDuration := now.Sub(entry.LastUsed)
-		entry.mu.Unlock()
-
-		// 保留条件：正在使用 或 空闲时间未超过阈值 或 数量少于最小空闲数
-		keep := !isIdle ||
-			idleDuration < p.config.ConnMaxIdleTime ||
-			len(keepEntries) < p.config.MinIdleConns
-
-		if keep {
-			keepEntries = append(keepEntries, entry)
-		} else {
-			// 关闭连接
-			entry.Client.Close()
-		}
-	}
-
-	p.entries = keepEntries
-	p.updateStats()
-}
-
-// healthCheck 健康检查（增强版本）
-func (p *MySQLConnectionPool) healthCheck() {
-	p.enhancedHealthCheck()
-}
-
-// StartMaintenance 启动维护协程（清理和健康检查）
-func (p *MySQLConnectionPool) StartMaintenance() {
-	p.wg.Add(1)
-	go func() {
-		defer p.wg.Done()
-
-		// 健康检查Ticker
-		healthTicker := time.NewTicker(p.config.HealthCheckInterval)
-		defer healthTicker.Stop()
-
-		// 动态调整Ticker（较短间隔）
-		scaleTicker := time.NewTicker(1 * time.Minute)
-		defer scaleTicker.Stop()
-
-		for {
-			select {
-			case <-healthTicker.C:
-				// 清理空闲连接
-				p.cleanupIdleConnections()
-				// 健康检查
-				p.healthCheck()
-				
-			case <-scaleTicker.C:
-				// 动态连接池调整
-				if p.config.EnableDynamicScaling {
-					p.adaptiveScaling()
-				}
-				
-			case <-p.stopCh:
-				return
-			}
-		}
-	}()
-}
-
-// createNewEntry 创建新的连接池条目
-func (p *MySQLConnectionPool) createNewEntry(conn *models.DbConnection) (*MySQLPoolEntry, error) {
-	startTime := time.Now()
-
-	client, err := createMySQLClient(conn)
-	if err != nil {
-		return nil, err
-	}
-
-	elapsed := time.Since(startTime)
-
-	// 慢连接日志
-	if p.config.EnableSlowConnLog && elapsed > p.config.SlowConnThreshold {
-		// 记录慢连接
-		p.mu.Lock()
-		p.stats.SlowConnCount++
-		p.mu.Unlock()
-	}
-
-	entry := &MySQLPoolEntry{
-		Client:    client,
-		LastUsed:  time.Now(),
-		CreatedAt: startTime,
-		InUse:     true,
-	}
-
-	return entry, nil
-}
-
-// waitForAvailableConnection 等待可用连接并获取它
-func (p *MySQLConnectionPool) waitForAvailableConnection(conn *models.DbConnection) (*MySQLPoolEntry, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-
-	ticker := time.NewTicker(100 * time.Millisecond)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ctx.Done():
-			return nil, ErrPoolExhausted
-		case <-ticker.C:
-			p.mu.Lock()
-			for _, entry := range p.entries {
-				entry.mu.Lock()
-				if !entry.InUse {
-					entry.InUse = true
-					entry.LastUsed = time.Now()
-					entry.mu.Unlock()
-					p.mu.Unlock()
-					return entry, nil
-				}
-				entry.mu.Unlock()
-			}
-			p.mu.Unlock()
-		}
-	}
-}
-
-// updateWaitStats 更新等待统计（调用方必须持有 p.mu）
-func (p *MySQLConnectionPool) updateWaitStats(startTime time.Time) {
-	p.stats.WaitCount++
-	p.stats.WaitDuration += time.Since(startTime)
-}
-
-// updateStats 更新连接池统计
-func (p *MySQLConnectionPool) updateStats() {
-	total := len(p.entries)
-	active := 0
-	idle := 0
-
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		if entry.InUse {
-			active++
-		} else {
-			idle++
-		}
-		entry.mu.Unlock()
-	}
-
-	p.stats.TotalConns = total
-	p.stats.ActiveConns = active
-	p.stats.IdleConns = idle
-}
-
-// adaptiveScaling 自适应连接池调整
-func (p *MySQLConnectionPool) adaptiveScaling() {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	// 计算当前使用率
-	if len(p.entries) == 0 {
-		return
-	}
-
-	usageRate := float64(p.stats.ActiveConns) / float64(len(p.entries))
-	
-	// 记录使用率历史
-	p.usageHistory = append(p.usageHistory, usageRate)
-	if len(p.usageHistory) > 100 {
-		p.usageHistory = p.usageHistory[1:]
-	}
-
-	// 检查是否需要调整
-	now := time.Now()
-	
-	// 扩容逻辑
-	if usageRate >= p.config.ScaleUpThreshold {
-		if now.Sub(p.lastScaleUpTime) >= p.config.MinScaleUpInterval {
-			p.scaleUp()
-			p.lastScaleUpTime = now
-		}
-		return
-	}
-
-	// 缩容逻辑
-	if usageRate <= p.config.ScaleDownThreshold && len(p.entries) > p.config.MinIdleConns {
-		if now.Sub(p.lastScaleDownTime) >= p.config.MinScaleDownInterval {
-			p.scaleDown()
-			p.lastScaleDownTime = now
-		}
-	}
-}
-
-// scaleUp 扩容
-func (p *MySQLConnectionPool) scaleUp() {
-	// scaleUp 仅更新目标大小，实际连接在 Acquire 时按需创建
-	// 移除了创建无效虚拟连接的逻辑
-	currentSize := len(p.entries)
-	scaleFactor := p.config.DynamicScaleFactor
-
-	newSize := int(float64(currentSize) * scaleFactor)
-	newSize = min(newSize, p.config.MaxOpenConns)
-	newSize = max(newSize, currentSize+1)
-
-	p.currentTargetSize = newSize
-	p.updateStats()
-}
-
-// scaleDown 缩容
-func (p *MySQLConnectionPool) scaleDown() {
-	// 计算新目标大小
-	currentSize := len(p.entries)
-	scaleFactor := 1.0 / p.config.DynamicScaleFactor
-	
-	newSize := int(float64(currentSize) * scaleFactor)
-	newSize = max(newSize, p.config.MinIdleConns)
-	newSize = min(newSize, currentSize-1) // 至少减少1个连接
-
-	if newSize < currentSize {
-		// 关闭多余的空闲连接
-		p.closeIdleConnections(currentSize - newSize)
-		p.currentTargetSize = newSize
-		p.updateStats()
-	}
-}
-
-// closeIdleConnections 关闭指定数量的空闲连接
-func (p *MySQLConnectionPool) closeIdleConnections(count int) {
-	// 收集空闲连接
-	idleEntries := make([]*MySQLPoolEntry, 0)
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		if !entry.InUse {
-			idleEntries = append(idleEntries, entry)
-		}
-		entry.mu.Unlock()
-	}
-
-	// 关闭指定数量的空闲连接
-	closedEntries := make(map[*MySQLPoolEntry]bool)
-	for i := 0; i < min(count, len(idleEntries)); i++ {
-		entry := idleEntries[i]
-		entry.mu.Lock()
-		entry.Client.Close()
-		entry.mu.Unlock()
-		closedEntries[entry] = true
-	}
-
-	// 重新构建连接池
-	remainingEntries := make([]*MySQLPoolEntry, 0, len(p.entries))
-	for _, entry := range p.entries {
-		if closedEntries[entry] {
-			continue // 跳过已关闭的连接
-		}
-		remainingEntries = append(remainingEntries, entry)
-	}
-
-	p.entries = remainingEntries
-}
-
-// enhancedHealthCheck 增强的健康检查
-func (p *MySQLConnectionPool) enhancedHealthCheck() {
-	p.mu.RLock()
-	entriesCopy := make([]*MySQLPoolEntry, len(p.entries))
-	copy(entriesCopy, p.entries)
-	p.mu.RUnlock()
-
-	var healthyEntries []*MySQLPoolEntry
-	var performanceWeights []float64
-
-	for _, entry := range entriesCopy {
-		entry.mu.Lock()
-		isIdle := !entry.InUse
-
-		// 测试连接有效性
-		isHealthy := true
-		startTime := time.Now()
-
-		if isIdle {
-			// 空闲连接：简单Ping测试
-			if err := entry.Client.sqlDB.Ping(); err != nil {
-				isHealthy = false
-				// 关闭失效连接
-				entry.Client.Close()
-			}
-		} else {
-			// 使用中的连接：快速测试（避免影响正常查询）
-			func() {
-				ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
-				defer cancel()
-				if err := entry.Client.sqlDB.PingContext(ctx); err != nil {
-					isHealthy = false
-				}
-			}()
-		}
-
-		// 计算连接性能权重
-		if isHealthy {
-			healthyEntries = append(healthyEntries, entry)
-
-			// 基于连接性能计算权重
-			responseTime := time.Since(startTime).Microseconds()
-			weight := 1.0 / max(float64(responseTime)/1000.0, 1.0) // 转换为毫秒，避免除零
-
-			performanceWeights = append(performanceWeights, weight)
-		} else {
-			// 不健康的连接
-			if isIdle {
-				entry.Client.Close()
-			}
-		}
-
-		entry.mu.Unlock()
-	}
-
-	// 更新连接池
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	p.entries = healthyEntries
-
-	// 更新自适应权重
-	if len(healthyEntries) > 0 {
-		for i := range healthyEntries {
-			if i < len(performanceWeights) {
-				p.adaptiveWeights[uint(i)] = performanceWeights[i]
-			}
-		}
-	}
-
-	p.updateStats()
-}
-
-// warmUp 连接池预热
-func (p *MySQLConnectionPool) warmUp() {
-	if !p.config.EnableWarmup {
-		return
-	}
-
-	p.mu.Lock()
-	defer p.mu.Unlock()
-
-	currentIdle := 0
-	for _, entry := range p.entries {
-		entry.mu.Lock()
-		if !entry.InUse {
-			currentIdle++
-		}
-		entry.mu.Unlock()
-	}
-
-	targetIdle := p.config.MinIdleConns
-	needed := targetIdle - currentIdle
-
-	// warmUp 仅记录目标大小，不在无连接配置的情况下创建无效虚拟连接
-	// 实际连接在 Acquire 时按需创建
-	_ = needed
-
-	p.updateStats()
-}
-
-// getOptimalConnection 获取最优连接（基于性能权重）
-// 注意：调用方必须已持有 p.mu
-func (p *MySQLConnectionPool) getOptimalConnection() (*MySQLPoolEntry, error) {
-	var bestEntry *MySQLPoolEntry
-	var bestWeight float64
-
-	for i, entry := range p.entries {
-		entry.mu.Lock()
-		if !entry.InUse {
-			weight := 1.0 // 默认权重
-			if w, ok := p.adaptiveWeights[uint(i)]; ok {
-				weight = w
-			}
-
-			if bestEntry == nil || weight > bestWeight {
-				bestEntry = entry
-				bestWeight = weight
-			}
-		}
-		entry.mu.Unlock()
-	}
-
-	if bestEntry == nil {
-		return nil, ErrPoolExhausted
-	}
-
-	bestEntry.InUse = true
-	bestEntry.LastUsed = time.Now()
-	return bestEntry, nil
-}
-
-// createMySQLClient 创建 MySQL 客户端的辅助函数
-func createMySQLClient(conn *models.DbConnection) (*MySQLClient, error) {
-	// 解密密码
-	password, err := crypto.DecryptPassword(conn.Password)
-	if err != nil {
-		return nil, fmt.Errorf("密码解密失败: %v", err)
-	}
-
-	config := &MySQLConfig{
-		Host:     conn.Host,
-		Port:     conn.Port,
-		Username: conn.Username,
-		Password: password,
-		Database: conn.Database,
-	}
-
-	return NewMySQLClient(config)
-}
-
-// 错误定义
-var (
-	ErrPoolExhausted = &PoolError{Message: "连接池已耗尽"}
-	ErrPoolClosed   = &PoolError{Message: "连接池已关闭"}
-)
-
-// PoolError 连接池错误
-type PoolError struct {
-	Message string
-	Err     error
-}
-
-func (e *PoolError) Error() string {
-	if e.Err != nil {
-		return e.Message + ": " + e.Err.Error()
-	}
-	return e.Message
-}
-
--- a/internal/dbclient/query_optimizer.go
+++ b/internal/dbclient/query_optimizer.go
@@ -1,762 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"crypto/sha256"
-	"fmt"
-	"regexp"
-	"strings"
-	"sync"
-	"time"
-)
-
-var (
-	reLimitOffset    = regexp.MustCompile(`limit\s+(\d+)(?:\s*,\s*(\d+))?`)
-	reFromTable      = regexp.MustCompile(`(?i)from\s+([^\s,]+)`)
-	reWhereClause    = regexp.MustCompile(`(?i)where\s+(.*?)(?:\s+order\s+by|\s+limit|\s+group\s+by|$)`)
-	reOrderBy        = regexp.MustCompile(`(?i)order\s+by\s+(.*?)(?:\s+limit|$)`)
-	reBatchOperation = regexp.MustCompile(`(?i)^\s*(INSERT|UPDATE|DELETE).*VALUES\s*\(`)
-)
-
-// CachedQuery 缓存查询结果
-type CachedQuery struct {
-	Result      *QueryResult
-	ExpiryTime  time.Time
-	CreatedAt   time.Time
-	QueryHash   string
-	QueryParams QueryParams
-	LastUsed    time.Time     // 最后使用时间（用于LRU策略）
-	AccessCount int64         // 访问次数（用于LFU策略）
-}
-
-// QueryParams 查询参数（用于缓存键生成）
-type QueryParams struct {
-	SQL        string
-	Database   string
-	Limit      int
-	Offset     int
-	Table      string
-	Where      string
-	SortBy     string
-	IsReadOnly bool
-}
-
-// QueryStats 查询统计信息
-type QueryStats struct {
-	TotalQueries      int64
-	CachedQueries     int64
-	SlowQueries       int64
-	TotalDuration     time.Duration
-	AverageDuration   time.Duration
-	CacheHitRate      float64
-	LastCacheUpdate   time.Time
-}
-
-// SlowQuery 慢查询记录
-type SlowQuery struct {
-	Query        string
-	Database     string
-	Duration     time.Duration
-	Timestamp    time.Time
-	Params       QueryParams
-	Table        string
-	IndexUsed    string
-	RowsAffected int64
-	Error        error
-}
-
-// IndexSuggestion 索引建议
-type IndexSuggestion struct {
-	Table         string
-	Columns       []string
-	IndexType     string // "normal", "unique", "fulltext"
-	Priority      string // "high", "medium", "low"
-	Query         string
-	Justification string
-	CanBeApplied  bool
-}
-
-// QueryOptimizer 查询优化器
-type QueryOptimizer struct {
-	cache            *QueryCache
-	stats            *QueryStats
-	slowQueries      []SlowQuery
-	indexSuggestions []IndexSuggestion
-	mu               sync.RWMutex
-	config           *OptimizerConfig
-	stopCh           chan struct{}
-	wg               sync.WaitGroup
-}
-
-// OptimizerConfig 查询优化器配置
-type OptimizerConfig struct {
-	// 缓存配置
-	CacheSize       int           // 最大缓存条目数
-	CacheTTL        time.Duration // 缓存过期时间
-	EnableCache     bool          // 是否启用缓存
-
-	// 慢查询配置
-	SlowQueryThreshold time.Duration // 慢查询阈值
-	EnableSlowLog     bool          // 是否启用慢查询日志
-	MaxSlowLogs       int           // 最大慢查询记录数
-
-	// 索引建议配置
-	EnableIndexSuggestions bool // 是否启用索引建议
-	MaxSuggestions         int  // 最大索引建议数
-
-	// 查询分析配置
-	EnableQueryAnalysis bool // 是否启用查询分析
-	MaxAnalysisDepth   int  // 查询分析深度
-}
-
-// DefaultOptimizerConfig 返回默认的查询优化器配置
-func DefaultOptimizerConfig() *OptimizerConfig {
-	return &OptimizerConfig{
-		CacheSize:              1000,                   // 最多缓存1000个查询
-		CacheTTL:               30 * time.Minute,       // 缓存30分钟
-		EnableCache:            true,                   // 启用缓存
-		SlowQueryThreshold:     100 * time.Millisecond, // 100ms以上为慢查询
-		EnableSlowLog:          true,                   // 启用慢查询日志
-		MaxSlowLogs:            1000,                   // 最多记录1000条慢查询
-		EnableIndexSuggestions: true,                   // 启用索引建议
-		MaxSuggestions:         100,                    // 最多100个索引建议
-		EnableQueryAnalysis:    true,                   // 启用查询分析
-		MaxAnalysisDepth:       3,                      // 分析深度3
-	}
-}
-
-// NewQueryOptimizer 创建新的查询优化器
-func NewQueryOptimizer(config *OptimizerConfig) *QueryOptimizer {
-	if config == nil {
-		config = DefaultOptimizerConfig()
-	}
-
-	optimizer := &QueryOptimizer{
-		cache:            NewQueryCache(config.CacheSize, config.CacheTTL),
-		stats:            &QueryStats{},
-		config:           config,
-		stopCh:           make(chan struct{}),
-		slowQueries:      make([]SlowQuery, 0),
-		indexSuggestions: make([]IndexSuggestion, 0),
-	}
-
-	// 启动维护协程
-	optimizer.StartMaintenance()
-
-	return optimizer
-}
-
-// OptimizeQuery 优化查询执行
-func (o *QueryOptimizer) OptimizeQuery(ctx context.Context, client *MySQLClient, sqlStr string, database string) (*QueryResult, time.Duration, error) {
-	startTime := time.Now()
-	queryParams := o.parseQueryParams(sqlStr, database)
-
-	// 检查缓存
-	if o.config.EnableCache && queryParams.IsReadOnly {
-		cached, err := o.cache.Get(queryParams)
-		if err == nil && cached != nil {
-			o.recordCacheHit()
-			return cached.Result, time.Since(startTime), nil
-		}
-	}
-
-	// 执行查询
-	result, err := client.ExecuteQuery(ctx, sqlStr, database)
-	if err != nil {
-		duration := time.Since(startTime)
-		o.recordSlowQuery(sqlStr, database, duration, queryParams, result, err)
-		return nil, duration, err
-	}
-
-	duration := time.Since(startTime)
-
-	// 检查是否为慢查询
-	if duration > o.config.SlowQueryThreshold {
-		o.recordSlowQuery(sqlStr, database, duration, queryParams, result, err)
-	}
-
-	// 缓存只读查询结果
-	if o.config.EnableCache && queryParams.IsReadOnly && err == nil {
-		cachedResult := &CachedQuery{
-			Result:      result,
-			ExpiryTime:  time.Now().Add(o.config.CacheTTL),
-			CreatedAt:   time.Now(),
-			QueryHash:   o.generateQueryHash(queryParams),
-			QueryParams: queryParams,
-			LastUsed:    time.Now(),
-			AccessCount: 1,
-		}
-		o.cache.Set(queryParams, cachedResult)
-	}
-
-	o.recordQuery(duration)
-	return result, duration, err
-}
-
-// ExecuteOptimizedUpdate 执行优化的更新操作
-func (o *QueryOptimizer) ExecuteOptimizedUpdate(ctx context.Context, client *MySQLClient, sqlStr string, database string) (int64, time.Duration, error) {
-	startTime := time.Now()
-
-	// 分析更新查询
-	queryParams := o.parseQueryParams(sqlStr, database)
-
-	// 检查是否为批量操作
-	if o.isBatchOperation(sqlStr) {
-		// 优化批量操作
-		rowsAffected, duration, err := o.optimizeBatchUpdate(ctx, client, sqlStr, database)
-		if err != nil {
-			o.recordSlowQuery(sqlStr, database, duration, queryParams, nil, err)
-			return 0, duration, err
-		}
-
-		o.recordQuery(duration)
-		return rowsAffected, duration, nil
-	}
-
-	// 执行普通更新
-	rowsAffected, err := client.ExecuteUpdate(ctx, sqlStr, database)
-	duration := time.Since(startTime)
-
-	if duration > o.config.SlowQueryThreshold {
-		o.recordSlowQuery(sqlStr, database, duration, queryParams, nil, err)
-	}
-
-	o.recordQuery(duration)
-	return rowsAffected, duration, err
-}
-
-// GetIndexSuggestions 获取索引建议
-func (o *QueryOptimizer) GetIndexSuggestions(table string) []IndexSuggestion {
-	o.mu.RLock()
-	defer o.mu.RUnlock()
-
-	var suggestions []IndexSuggestion
-	for _, suggestion := range o.indexSuggestions {
-		if suggestion.Table == table || table == "" {
-			suggestions = append(suggestions, suggestion)
-		}
-	}
-	return suggestions
-}
-
-// GenerateIndexSuggestions 为表生成索引建议
-func (o *QueryOptimizer) GenerateIndexSuggestions(ctx context.Context, client *MySQLClient, database, table string) error {
-	// 获取表的慢查询记录
-	tableSlowQueries := o.getTableSlowQueries(database, table)
-
-	// 分析查询模式
-	for _, slowQuery := range tableSlowQueries {
-		suggestions := o.analyzeQueryForIndexes(slowQuery.Query, table)
-		o.mu.Lock()
-		o.indexSuggestions = append(o.indexSuggestions, suggestions...)
-
-		// 限制建议数量
-		if len(o.indexSuggestions) > o.config.MaxSuggestions {
-			o.indexSuggestions = o.indexSuggestions[:o.config.MaxSuggestions]
-		}
-		o.mu.Unlock()
-	}
-
-	return nil
-}
-
-// GetQueryStats 获取查询统计信息
-func (o *QueryOptimizer) GetQueryStats() QueryStats {
-	o.mu.RLock()
-	defer o.mu.RUnlock()
-
-	return *o.stats
-}
-
-// GetSlowQueries 获取慢查询记录
-func (o *QueryOptimizer) GetSlowQueries(limit int) []SlowQuery {
-	o.mu.RLock()
-	defer o.mu.RUnlock()
-
-	if limit <= 0 || limit > len(o.slowQueries) {
-		limit = len(o.slowQueries)
-	}
-
-	return o.slowQueries[:limit]
-}
-
-// ClearCache 清空缓存
-func (o *QueryOptimizer) ClearCache() {
-	o.cache.Clear()
-}
-
-// Stop 停止优化器
-func (o *QueryOptimizer) Stop() {
-	close(o.stopCh)
-	o.wg.Wait()
-}
-
-// parseQueryParams 解析查询参数
-func (o *QueryOptimizer) parseQueryParams(sqlStr, database string) QueryParams {
-	params := QueryParams{
-		SQL:      sqlStr,
-		Database: database,
-	}
-
-	// 解析LIMIT和OFFSET
-	limit, offset := o.parseLimitOffset(sqlStr)
-	params.Limit = limit
-	params.Offset = offset
-
-	// 解析表名
-	tables := o.parseTables(sqlStr)
-	if len(tables) > 0 {
-		params.Table = tables[0]
-	}
-
-	// 解析WHERE条件
-	where := o.parseWhereCondition(sqlStr)
-	params.Where = where
-
-	// 解析排序
-	sort := o.parseSortOrder(sqlStr)
-	params.SortBy = sort
-
-	// 判断是否为只读查询
-	params.IsReadOnly = o.isReadOnlyQuery(sqlStr)
-
-	return params
-}
-
-// parseLimitOffset 解析LIMIT和OFFSET
-func (o *QueryOptimizer) parseLimitOffset(sqlStr string) (limit, offset int) {
-	sqlStr = strings.ToLower(sqlStr)
-
-	matches := reLimitOffset.FindStringSubmatch(sqlStr)
-
-	if len(matches) > 1 {
-		fmt.Sscanf(matches[1], "%d", &limit)
-		if len(matches) > 2 && matches[2] != "" {
-			fmt.Sscanf(matches[2], "%d", &offset)
-		}
-	}
-
-	// MySQL LIMIT offset, count: matches[1]=offset, matches[2]=count
-	if len(matches) > 2 && matches[2] != "" {
-		offset, limit = limit, offset
-	}
-
-	return limit, offset
-}
-
-// parseTables 解析查询中的表名
-func (o *QueryOptimizer) parseTables(sqlStr string) []string {
-	// 简单实现：解析FROM和JOIN中的表名
-	tables := make([]string, 0)
-
-	fromMatches := reFromTable.FindAllStringSubmatch(sqlStr, -1)
-
-	for _, match := range fromMatches {
-		if len(match) > 1 {
-			tableName := strings.Trim(match[1], "`\"'[]")
-			tables = append(tables, tableName)
-		}
-	}
-
-	return tables
-}
-
-// parseWhereCondition 解析WHERE条件
-func (o *QueryOptimizer) parseWhereCondition(sqlStr string) string {
-	matches := reWhereClause.FindStringSubmatch(sqlStr)
-
-	if len(matches) > 1 {
-		return strings.TrimSpace(matches[1])
-	}
-
-	return ""
-}
-
-// parseSortOrder 解析排序条件
-func (o *QueryOptimizer) parseSortOrder(sqlStr string) string {
-	matches := reOrderBy.FindStringSubmatch(sqlStr)
-
-	if len(matches) > 1 {
-		return strings.TrimSpace(matches[1])
-	}
-
-	return ""
-}
-
-// isReadOnlyQuery 判断是否为只读查询
-func (o *QueryOptimizer) isReadOnlyQuery(sqlStr string) bool {
-	sqlStr = strings.ToUpper(strings.TrimSpace(sqlStr))
-
-	// SELECT只读查询
-	if strings.HasPrefix(sqlStr, "SELECT") {
-		return true
-	}
-
-	// 支持的只读查询类型
-	readOnlyQueries := []string{
-		"SHOW", "DESCRIBE", "DESC", "EXPLAIN",
-		"WITH", "UNION", "INTERSECT", "EXCEPT",
-	}
-
-	for _, query := range readOnlyQueries {
-		if strings.HasPrefix(sqlStr, query) {
-			return true
-		}
-	}
-
-	return false
-}
-
-// isBatchOperation 判断是否为批量操作
-func (o *QueryOptimizer) isBatchOperation(sqlStr string) bool {
-	return reBatchOperation.MatchString(sqlStr)
-}
-
-// generateQueryHash 生成查询哈希
-func (o *QueryOptimizer) generateQueryHash(params QueryParams) string {
-	hashData := fmt.Sprintf("%s|%s|%d|%d|%s|%s|%s|%v",
-		params.SQL, params.Database, params.Limit, params.Offset,
-		params.Table, params.Where, params.SortBy, params.IsReadOnly)
-
-	h := sha256.Sum256([]byte(hashData))
-	return fmt.Sprintf("%x", h)
-}
-
-// recordQuery 记录查询统计
-func (o *QueryOptimizer) recordQuery(duration time.Duration) {
-	o.mu.Lock()
-	defer o.mu.Unlock()
-
-	o.stats.TotalQueries++
-	o.stats.TotalDuration += duration
-	o.stats.AverageDuration = time.Duration(int64(float64(o.stats.TotalDuration) / float64(o.stats.TotalQueries)))
-
-	now := time.Now()
-	if o.stats.LastCacheUpdate.IsZero() || now.Sub(o.stats.LastCacheUpdate) > 5*time.Minute {
-		// 更新缓存命中率
-		total := o.stats.TotalQueries
-		hit := o.stats.CachedQueries
-		o.stats.CacheHitRate = float64(hit) / float64(total) * 100
-		o.stats.LastCacheUpdate = now
-	}
-}
-
-// recordCacheHit 记录缓存命中
-func (o *QueryOptimizer) recordCacheHit() {
-	o.mu.Lock()
-	defer o.mu.Unlock()
-
-	o.stats.CachedQueries++
-}
-
-// recordSlowQuery 记录慢查询
-func (o *QueryOptimizer) recordSlowQuery(query, database string, duration time.Duration, params QueryParams, result *QueryResult, err error) {
-	if !o.config.EnableSlowLog {
-		return
-	}
-
-	slowQuery := SlowQuery{
-		Query:        query,
-		Database:     database,
-		Duration:     duration,
-		Timestamp:    time.Now(),
-		Params:       params,
-		Table:        params.Table,
-		IndexUsed:    o.extractIndexUsed(query),
-		RowsAffected: o.extractRowsAffected(result),
-		Error:        err,
-	}
-
-	o.mu.Lock()
-	defer o.mu.Unlock()
-
-	o.slowQueries = append(o.slowQueries, slowQuery)
-
-	// 限制慢查询记录数量
-	if len(o.slowQueries) > o.config.MaxSlowLogs {
-		o.slowQueries = o.slowQueries[1:]
-	}
-
-	o.stats.SlowQueries++
-}
-
-// extractIndexUsed 提取使用的索引
-func (o *QueryOptimizer) extractIndexUsed(query string) string {
-	// 简单实现：从EXPLAIN结果中提取索引信息
-	// 实际项目中应该执行EXPLAIN语句分析
-	return "unknown"
-}
-
-// extractRowsAffected 提取影响的行数
-func (o *QueryOptimizer) extractRowsAffected(result *QueryResult) int64 {
-	if result != nil && len(result.Data) > 0 {
-		if rows, ok := result.Data[0]["rows_affected"].(int64); ok {
-			return rows
-		}
-	}
-	return 0
-}
-
-// analyzeQuery 分析查询性能
-func (o *QueryOptimizer) analyzeQuery(query, database string, result *QueryResult, duration time.Duration) {
-	// 这里可以实现更复杂的查询分析逻辑
-	// 比如分析查询计划、检测N+1查询问题等
-
-	// 简单实现：记录查询到统计信息中
-	_ = query
-	_ = database
-	_ = result
-	_ = duration
-}
-
-// analyzeQueryForIndexes 分析查询为索引建议
-func (o *QueryOptimizer) analyzeQueryForIndexes(query, table string) []IndexSuggestion {
-	var suggestions []IndexSuggestion
-
-	// 解析查询中的WHERE条件
-	where := o.parseWhereCondition(query)
-	if where != "" {
-		// 提取WHERE条件中的列
-		columns := o.extractColumnsFromWhere(where)
-
-		if len(columns) > 0 {
-			// 创建索引建议
-			suggestion := IndexSuggestion{
-				Table:         table,
-				Columns:       columns,
-				IndexType:     "normal",
-				Priority:      "medium",
-				Query:         query,
-				Justification: fmt.Sprintf("查询经常使用WHERE条件 %s", where),
-				CanBeApplied:  true,
-			}
-			suggestions = append(suggestions, suggestion)
-		}
-	}
-
-	// 解析ORDER BY条件
-	order := o.parseSortOrder(query)
-	if order != "" {
-		// 提取排序的列
-		columns := o.extractColumnsFromOrder(order)
-
-		if len(columns) > 0 {
-			// 创建排序索引建议
-			suggestion := IndexSuggestion{
-				Table:         table,
-				Columns:       columns,
-				IndexType:     "normal",
-				Priority:      "low",
-				Query:         query,
-				Justification: fmt.Sprintf("查询经常使用ORDER BY %s", order),
-				CanBeApplied:  true,
-			}
-			suggestions = append(suggestions, suggestion)
-		}
-	}
-
-	return suggestions
-}
-
-// extractColumnsFromWhere 从WHERE条件中提取列名
-func (o *QueryOptimizer) extractColumnsFromWhere(where string) []string {
-	// 简单实现：提取WHERE条件中的列名
-	columns := make([]string, 0)
-
-	// 这里可以实现更复杂的列名解析逻辑
-	// 目前只做简单处理
-	words := strings.Fields(where)
-	for _, word := range words {
-		// 去除运算符和引号
-		if !strings.Contains(word, "=") &&
-			!strings.Contains(word, ">") &&
-			!strings.Contains(word, "<") &&
-			!strings.Contains(word, "!=") &&
-			!strings.HasPrefix(word, "'") &&
-			!strings.HasPrefix(word, "\"") {
-			columns = append(columns, strings.Trim(word, " `\"'[]"))
-		}
-	}
-
-	return columns
-}
-
-// extractColumnsFromOrder 从ORDER BY条件中提取列名
-func (o *QueryOptimizer) extractColumnsFromOrder(order string) []string {
-	// 简单实现：提取ORDER BY中的列名
-	columns := strings.Split(order, ",")
-	for i, col := range columns {
-		columns[i] = strings.TrimSpace(strings.Split(col, " ")[0])
-	}
-	return columns
-}
-
-// getTableSlowQueries 获取表的慢查询记录
-func (o *QueryOptimizer) getTableSlowQueries(database, table string) []SlowQuery {
-	o.mu.RLock()
-	defer o.mu.RUnlock()
-
-	var tableQueries []SlowQuery
-	for _, query := range o.slowQueries {
-		if (database == "" || query.Database == database) &&
-			(table == "" || query.Table == table) {
-			tableQueries = append(tableQueries, query)
-		}
-	}
-	return tableQueries
-}
-
-// optimizeBatchUpdate 优化批量更新操作
-func (o *QueryOptimizer) optimizeBatchUpdate(ctx context.Context, client *MySQLClient, sqlStr string, database string) (int64, time.Duration, error) {
-	// 简单实现：执行原始查询
-	// 实际项目中可以实现批量操作优化
-	startTime := time.Now()
-	rowsAffected, err := client.ExecuteUpdate(ctx, sqlStr, database)
-	duration := time.Since(startTime)
-	return rowsAffected, duration, err
-}
-
-// StartMaintenance 启动维护协程
-func (o *QueryOptimizer) StartMaintenance() {
-	o.wg.Add(1)
-	go func() {
-		defer o.wg.Done()
-
-		ticker := time.NewTicker(5 * time.Minute)
-		defer ticker.Stop()
-
-		for {
-			select {
-			case <-ticker.C:
-				// 清理过期的缓存
-				o.cache.CleanupExpired()
-
-				// 分析慢查询生成新的索引建议
-				o.analyzeSlowQueriesForSuggestions()
-
-			case <-o.stopCh:
-				return
-			}
-		}
-	}()
-}
-
-// RecordPoolError 记录连接池错误
-func (o *QueryOptimizer) RecordPoolError(operation string, err error) {
-	if !o.config.EnableSlowLog || err == nil {
-		return
-	}
-
-	poolError := SlowQuery{
-		Query:        operation,
-		Database:     "pool",
-		Duration:     0,
-		Timestamp:    time.Now(),
-		Params:       QueryParams{SQL: operation},
-		Table:        "connection_pool",
-		IndexUsed:    "N/A",
-		RowsAffected: 0,
-		Error:        err,
-	}
-
-	o.mu.Lock()
-	defer o.mu.Unlock()
-
-	o.slowQueries = append(o.slowQueries, poolError)
-
-	// 限制慢查询记录数量
-	if len(o.slowQueries) > o.config.MaxSlowLogs {
-		o.slowQueries = o.slowQueries[1:]
-	}
-}
-
-// analyzeSlowQueriesForSuggestions 分析慢查询生成索引建议
-func (o *QueryOptimizer) analyzeSlowQueriesForSuggestions() {
-	// 这里可以实现更复杂的慢查询分析逻辑
-	// 比如分析查询模式、统计索引使用情况等
-
-	// 分析慢查询模式
-	o.analyzeSlowQueryPatterns()
-}
-
-// analyzeSlowQueryPatterns 分析慢查询模式
-func (o *QueryOptimizer) analyzeSlowQueryPatterns() {
-	o.mu.RLock()
-	queryTypes := make(map[string]int)
-	tableQueries := make(map[string]int)
-
-	for _, query := range o.slowQueries {
-		queryType := o.detectQueryType(query.Query)
-		queryTypes[queryType]++
-
-		if query.Table != "" {
-			tableQueries[query.Table]++
-		}
-	}
-	o.mu.RUnlock()
-
-	// 根据统计结果生成智能建议（在锁外执行，避免死锁）
-	o.generateSmartSuggestions(queryTypes, tableQueries)
-}
-
-// detectQueryType 检测查询类型
-func (o *QueryOptimizer) detectQueryType(sqlStr string) string {
-	sqlStr = strings.ToUpper(strings.TrimSpace(sqlStr))
-
-	if strings.HasPrefix(sqlStr, "SELECT") {
-		if strings.Contains(sqlStr, "JOIN") {
-			return "SELECT_JOIN"
-		} else if strings.Contains(sqlStr, "GROUP BY") {
-			return "SELECT_GROUP"
-		} else {
-			return "SELECT_SIMPLE"
-		}
-	} else if strings.HasPrefix(sqlStr, "INSERT") {
-		return "INSERT"
-	} else if strings.HasPrefix(sqlStr, "UPDATE") {
-		return "UPDATE"
-	} else if strings.HasPrefix(sqlStr, "DELETE") {
-		return "DELETE"
-	}
-
-	return "OTHER"
-}
-
-// generateSmartSuggestions 生成智能建议
-func (o *QueryOptimizer) generateSmartSuggestions(queryTypes map[string]int, tableQueries map[string]int) {
-	// 分析频繁执行的查询类型
-	var mostFrequentType string
-	var maxCount int
-
-	for queryType, count := range queryTypes {
-		if count > maxCount {
-			maxCount = count
-			mostFrequentType = queryType
-		}
-	}
-
-	// 生成针对性的索引建议
-	switch mostFrequentType {
-	case "SELECT_JOIN":
-		// 为JOIN查询建议复合索引
-		o.generateJoinSuggestions()
-	case "SELECT_GROUP":
-		// 为GROUP BY查询建议索引
-		o.generateGroupSuggestions()
-	case "INSERT":
-		// 为批量插入建议优化
-		o.generateInsertSuggestions()
-	}
-}
-
-// generateJoinSuggestions 生成JOIN查询建议
-func (o *QueryOptimizer) generateJoinSuggestions() {
-}
-
-// generateGroupSuggestions 生成GROUP BY查询建议
-func (o *QueryOptimizer) generateGroupSuggestions() {
-}
-
-// generateInsertSuggestions 生成批量插入建议
-func (o *QueryOptimizer) generateInsertSuggestions() {
-}
--- a/internal/dbclient/redis.go
+++ b/internal/dbclient/redis.go
@@ -1,241 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"fmt"
-	"time"
-
-	"u-desk/internal/common"
-
-	"github.com/redis/go-redis/v9"
-)
-
-// RedisClient Redis 客户端
-type RedisClient struct {
-	client *redis.Client
-	config *RedisConfig
-}
-
-// RedisConfig Redis 配置
-type RedisConfig struct {
-	Host     string
-	Port     int
-	Password string
-	DB       int // 数据库编号，默认 0
-}
-
-// NewRedisClient 创建 Redis 客户端
-func NewRedisClient(config *RedisConfig) (*RedisClient, error) {
-	addr := fmt.Sprintf("%s:%d", config.Host, config.Port)
-
-	rdb := redis.NewClient(&redis.Options{
-		Addr:         addr,
-		Password:     config.Password,
-		DB:           config.DB,
-		DialTimeout:  common.TimeoutConnect,
-		ReadTimeout:  3 * time.Second,
-		WriteTimeout: 3 * time.Second,
-	})
-
-	// 测试连接
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
-	defer cancel()
-
-	if err := rdb.Ping(ctx).Err(); err != nil {
-		return nil, fmt.Errorf("Redis 连接测试失败: %v", err)
-	}
-
-	return &RedisClient{
-		client: rdb,
-		config: config,
-	}, nil
-}
-
-// TestRedisConnection 测试连接
-func TestRedisConnection(host string, port int, password string) error {
-	config := &RedisConfig{
-		Host:     host,
-		Port:     port,
-		Password: password,
-		DB:       0,
-	}
-	client, err := NewRedisClient(config)
-	if err != nil {
-		return err
-	}
-	defer client.Close()
-	return nil
-}
-
-// NewRedisClientByDB 根据参数创建指定 DB 的 Redis 客户端（用于多 DB 场景）
-func NewRedisClientByDB(host string, port int, password string, dbNum int) (*RedisClient, error) {
-	config := &RedisConfig{
-		Host:     host,
-		Port:     port,
-		Password: password,
-		DB:       dbNum,
-	}
-	return NewRedisClient(config)
-}
-
-// Close 关闭连接
-func (c *RedisClient) Close() error {
-	if c.client != nil {
-		return c.client.Close()
-	}
-	return nil
-}
-
-// ExecuteCommand 执行 Redis 命令
-func (c *RedisClient) ExecuteCommand(ctx context.Context, cmd string, args ...interface{}) (interface{}, error) {
-	return c.client.Do(ctx, append([]interface{}{cmd}, args...)...).Result()
-}
-
-// GetKeys 获取 Key 列表（支持 pattern，使用 SCAN 代替 KEYS 以提高性能）
-func (c *RedisClient) GetKeys(ctx context.Context, pattern string) ([]string, error) {
-	if pattern == "" {
-		pattern = "*"
-	}
-
-	var keys []string
-	var cursor uint64
-	const count = 100 // 每次扫描的数量
-
-	for {
-		var err error
-		var batch []string
-		batch, cursor, err = c.client.Scan(ctx, cursor, pattern, count).Result()
-		if err != nil {
-			return nil, err
-		}
-
-		keys = append(keys, batch...)
-
-		if cursor == 0 {
-			break
-		}
-	}
-
-	return keys, nil
-}
-
-// GetKeyType 获取 Key 类型
-func (c *RedisClient) GetKeyType(ctx context.Context, key string) (string, error) {
-	return c.client.Type(ctx, key).Result()
-}
-
-// GetKeyValue 获取 Key 值
-func (c *RedisClient) GetKeyValue(ctx context.Context, key string) (interface{}, error) {
-	keyType, err := c.GetKeyType(ctx, key)
-	if err != nil {
-		return nil, err
-	}
-
-	switch keyType {
-	case "string":
-		return c.client.Get(ctx, key).Result()
-	case "list":
-		return c.client.LRange(ctx, key, 0, -1).Result()
-	case "set":
-		return c.client.SMembers(ctx, key).Result()
-	case "zset":
-		// 对于有序集合，返回带分数的结果
-		zMembers, err := c.client.ZRangeWithScores(ctx, key, 0, -1).Result()
-		if err != nil {
-			return nil, err
-		}
-		// 转换为 map 格式，便于展示
-		result := make([]map[string]interface{}, len(zMembers))
-		for i, member := range zMembers {
-			result[i] = map[string]interface{}{
-				"member": member.Member,
-				"score":  member.Score,
-			}
-		}
-		return result, nil
-	case "hash":
-		return c.client.HGetAll(ctx, key).Result()
-	default:
-		return nil, fmt.Errorf("不支持的类型: %s", keyType)
-	}
-}
-
-// GetTTL 获取 Key 的 TTL
-func (c *RedisClient) GetTTL(ctx context.Context, key string) (time.Duration, error) {
-	return c.client.TTL(ctx, key).Result()
-}
-
-// GetKeyInfo 获取 Key 详细信息
-func (c *RedisClient) GetKeyInfo(ctx context.Context, key string) (map[string]interface{}, error) {
-	info := map[string]interface{}{
-		"key":   key,
-		"type":  "",
-		"value": nil,
-		"ttl":   0,
-	}
-
-	// 获取 Key 类型
-	keyType, err := c.GetKeyType(ctx, key)
-	if err != nil {
-		return nil, fmt.Errorf("获取 Key 类型失败: %v", err)
-	}
-	info["type"] = keyType
-
-	// 获取 TTL
-	ttl, err := c.GetTTL(ctx, key)
-	if err != nil {
-		return nil, fmt.Errorf("获取 TTL 失败: %v", err)
-	}
-	info["ttl"] = ttl.Seconds()
-
-	// 获取 Key 值（限制大小，避免过大）
-	value, err := c.GetKeyValue(ctx, key)
-	if err != nil {
-		return nil, fmt.Errorf("获取 Key 值失败: %v", err)
-	}
-	info["value"] = formatValuePreview(value)
-
-	// 获取 Key 长度（使用 STRLEN、HLEN、SCARD、ZCARD）
-	var keyLength int64
-	switch keyType {
-	case "string":
-		keyLength, err = c.client.StrLen(ctx, key).Result()
-	case "list":
-		keyLength, err = c.client.LLen(ctx, key).Result()
-	case "set":
-		keyLength, err = c.client.SCard(ctx, key).Result()
-	case "zset":
-		keyLength, err = c.client.ZCard(ctx, key).Result()
-	case "hash":
-		keyLength, err = c.client.HLen(ctx, key).Result()
-	}
-	if err == nil {
-		info["length"] = keyLength
-	}
-
-	return info, nil
-}
-
-// formatValuePreview 格式化值预览（限制长度）
-func formatValuePreview(value interface{}) string {
-	if value == nil {
-		return ""
-	}
-
-	const maxPreviewLength = 200
-	valueStr := fmt.Sprintf("%v", value)
-	if len(valueStr) > maxPreviewLength {
-		valueStr = valueStr[:maxPreviewLength] + "..."
-	}
-
-	return valueStr
-}
-
-// ListDatabases 获取数据库列表（Redis 使用 DB number）
-// Redis 没有传统数据库概念，这里返回空数组
-func (c *RedisClient) ListDatabases(ctx context.Context) ([]string, error) {
-	// Redis 可以使用 DB number 来隔离数据
-	// 这里可以返回当前配置的 DB 或者所有可用的 DB
-	// 为简单起见，返回空数组，让用户直接操作 Key
-	return []string{}, nil
-}
--- a/internal/dbclient/redis_pipeline.go
+++ b/internal/dbclient/redis_pipeline.go
@@ -1,151 +0,0 @@
-package dbclient
-
-import (
-	"context"
-	"fmt"
-	"log"
-
-	"github.com/redis/go-redis/v9"
-)
-
-// RedisPipeline Redis Pipeline 操作
-type RedisPipeline struct {
-	client   *RedisClient
-	commands []RedisCommand
-	ctx      context.Context
-}
-
-// RedisCommand Redis 命令结构
-type RedisCommand struct {
-	Command string
-	Args    []interface{}
-	Result  interface{}
-	Error   error
-}
-
-// NewRedisPipeline 创建新的 Redis Pipeline
-func (r *RedisClient) NewPipeline(ctx context.Context) *RedisPipeline {
-	return &RedisPipeline{
-		client:   r,
-		commands: make([]RedisCommand, 0),
-		ctx:      ctx,
-	}
-}
-
-// AddCommand 添加命令到 Pipeline
-func (p *RedisPipeline) AddCommand(command string, args ...interface{}) {
-	p.commands = append(p.commands, RedisCommand{
-		Command: command,
-		Args:    args,
-	})
-}
-
-// Execute 使用 go-redis 原生 Pipeline 执行所有命令
-func (p *RedisPipeline) Execute() ([]interface{}, error) {
-	if len(p.commands) == 0 {
-		return nil, nil
-	}
-
-	pipe := p.client.client.Pipeline()
-
-	cmds := make([]*redis.Cmd, len(p.commands))
-	for i, c := range p.commands {
-		cmds[i] = pipe.Do(p.ctx, append([]interface{}{c.Command}, c.Args...)...)
-	}
-
-	// 一次性发送所有命令
-	results := make([]interface{}, len(p.commands))
-	cmdResults, err := pipe.Exec(p.ctx)
-	if err != nil && err != redis.Nil {
-		log.Printf("[RedisPipeline] Exec 错误: %v", err)
-	}
-
-	for i, cmd := range cmds {
-		result, cmdErr := cmd.Result()
-		results[i] = result
-		p.commands[i].Result = result
-		p.commands[i].Error = cmdErr
-	}
-
-	// 如果 Exec 返回了命令结果（部分 Redis 版本），使用它们
-	for i, cr := range cmdResults {
-		if cr.Err() != nil && cr.Err() != redis.Nil {
-			p.commands[i].Error = cr.Err()
-			if i < len(results) {
-				results[i] = nil
-			}
-		}
-	}
-
-	_ = results // 已经通过 cmds 获取
-	return results, nil
-}
-
-// GetCommands 获取 Pipeline 中的命令列表
-func (p *RedisPipeline) GetCommands() []RedisCommand {
-	return p.commands
-}
-
-// Len 获取 Pipeline 中的命令数量
-func (p *RedisPipeline) Len() int {
-	return len(p.commands)
-}
-
-// Clear 清空 Pipeline
-func (p *RedisPipeline) Clear() {
-	p.commands = make([]RedisCommand, 0)
-}
-
-// RedisTransaction Redis 事务支持
-type RedisTransaction struct {
-	client *RedisClient
-	watch  []string
-	cmds   []RedisCommand
-	ctx    context.Context
-}
-
-// NewRedisTransaction 创建新的 Redis 事务
-func (r *RedisClient) NewTransaction(ctx context.Context, watch ...string) *RedisTransaction {
-	return &RedisTransaction{
-		client: r,
-		watch:  watch,
-		ctx:    ctx,
-	}
-}
-
-// AddCommand 添加命令到事务
-func (tx *RedisTransaction) AddCommand(command string, args ...interface{}) {
-	tx.cmds = append(tx.cmds, RedisCommand{
-		Command: command,
-		Args:    args,
-	})
-}
-
-// Exec 使用 go-redis Watch + TxPipeline 执行事务（MULTI/EXEC）
-func (tx *RedisTransaction) Exec() ([]interface{}, error) {
-	pipe := tx.client.client.TxPipeline()
-
-	// 添加所有命令
-	cmds := make([]*redis.Cmd, len(tx.cmds))
-	for i, c := range tx.cmds {
-		cmds[i] = pipe.Do(tx.ctx, append([]interface{}{c.Command}, c.Args...)...)
-	}
-
-	// TxPipeline 自动发送 MULTI/EXEC
-	results := make([]interface{}, len(tx.cmds))
-	_, err := pipe.Exec(tx.ctx)
-
-	for i, cmd := range cmds {
-		result, cmdErr := cmd.Result()
-		results[i] = result
-		tx.cmds[i].Result = result
-		tx.cmds[i].Error = cmdErr
-	}
-
-	if err != nil && err != redis.Nil {
-		return results, fmt.Errorf("事务执行失败: %v", err)
-	}
-
-	return results, nil
-}
-
--- a/internal/filesystem/asset_handler.go
+++ b/internal/filesystem/asset_handler.go
@@ -2,6 +2,7 @@ package filesystem

 import (
 	"context"
+	"errors"
 	"fmt"
 	"log"
 	"net/http"
@@ -48,6 +49,48 @@ var (
 // HTML 属性正则缓存（避免 replaceHtmlTagAttribute 中重复编译）
 var attrRegexCache sync.Map // map[string]*regexp.Regexp

+// 路径校验 sentinel error（用 errors.Is 匹配，不依赖字符串）
+var (
+	ErrPathInvalidEncoding = fmt.Errorf("invalid path encoding")
+	ErrPathTraversal      = fmt.Errorf("path traversal detected")
+	ErrPathUnsafe          = fmt.Errorf("unsafe path")
+)
+
+// validateFilePath 校验文件路径安全性（URL解码 + 路径遍历检测 + 安全检查）
+// 返回清理后的绝对路径，或 sentinel error
+func validateFilePath(rawPath string, logPrefix string) (string, error) {
+	decodedPath, err := url.QueryUnescape(rawPath)
+	if err != nil {
+		return "", ErrPathInvalidEncoding
+	}
+
+	if strings.Contains(decodedPath, "..") {
+		return "", ErrPathTraversal
+	}
+
+	// 去除代理引入的 /localfs/ 前缀（可能有多层）
+	clean := decodedPath
+	for strings.HasPrefix(clean, "/localfs/") || strings.HasPrefix(clean, "localfs/") {
+		clean = strings.TrimPrefix(clean, "/localfs/")
+		clean = strings.TrimPrefix(clean, "localfs/")
+	}
+
+	// 平台适配：Windows 用反斜杠，Linux/macOS 保持正斜杠
+	filePath := filepath.FromSlash(clean)
+	filePath = filepath.Clean(filePath)
+
+	// 确保绝对路径（Linux 以 / 开头，Windows 以盘符开头）
+	if !filepath.IsAbs(filePath) && len(filePath) > 0 && filePath[0] != '/' && filePath[1] != ':' {
+		filePath = "/" + filePath
+	}
+
+	if !isSafePath(filePath) {
+		return "", ErrPathUnsafe
+	}
+
+	return filePath, nil
+}
+
 // LocalFileServer 本地文件服务器（独立的 HTTP 服务器）
 type LocalFileServer struct {
 	server *http.Server
@@ -75,7 +118,7 @@ func StartLocalFileServer() (string, error) {

 		// 创建服务器（固定端口）
 		server := &http.Server{
-			Addr:    "localhost:18765",
+			Addr:    "localhost:8073",
 			Handler: mux,
 		}

@@ -90,7 +133,7 @@ func StartLocalFileServer() (string, error) {

 		localFileServer = &LocalFileServer{
 			server: server,
-			addr:   "localhost:18765",
+			addr:   "localhost:8073",
 		}

 		log.Printf("[LocalFileServer] 已启动，监听: %s", localFileServer.addr)
@@ -123,9 +166,20 @@ func handleLocalFileRequest(w http.ResponseWriter, r *http.Request) {

 	log.Printf("[LocalFileHandler] 收到请求: %s", r.URL.Path)

-	// 从 URL 路径获取文件路径（移除 /localfs/ 前缀）
-	pathPart := strings.TrimPrefix(r.URL.Path, "/localfs/")
-	log.Printf("[LocalFileHandler] TrimPrefix 后: %s", pathPart)
+	// 从 URL 路径获取文件路径（移除所有 /localfs/ 前缀，兼容代理双重前缀）
+	pathPart := r.URL.Path
+	for strings.HasPrefix(pathPart, "/localfs/") {
+		pathPart = strings.TrimPrefix(pathPart, "/localfs/")
+	}
+	if pathPart == "" || pathPart == r.URL.Path {
+		log.Printf("[LocalFileHandler] 路径前缀无效: original=%s", r.URL.Path)
+		http.Error(w, "Invalid path", http.StatusBadRequest)
+		return
+	}
+	// 仅对非绝对路径添加前导 /（Windows 盘符路径如 D:/ 已经是绝对路径，不能加 /）
+	if !strings.HasPrefix(pathPart, "/") && !regexp.MustCompile(`^[A-Za-z]:`).MatchString(pathPart) {
+		pathPart = "/" + pathPart
+	}

 	if pathPart == "" || pathPart == r.URL.Path {
 		log.Printf("[LocalFileHandler] 路径前缀无效")
@@ -133,33 +187,23 @@ func handleLocalFileRequest(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	// 🔒 修复：先进行URL解码，防止路径遍历攻击
-	decodedPath, err := url.QueryUnescape(pathPart)
+	// 校验路径安全性（URL解码 + 路径遍历检测 + 安全检查）
+	filePath, err := validateFilePath(pathPart, "[LocalFileHandler]")
 	if err != nil {
-		log.Printf("[LocalFileHandler] URL解码失败: %v", err)
+		log.Printf("[LocalFileHandler] 路径校验失败: %v (%s)", err, pathPart)
+		switch {
+		case errors.Is(err, ErrPathInvalidEncoding):
 			http.Error(w, "Invalid path encoding", http.StatusBadRequest)
-		return
-	}
-	log.Printf("[LocalFileHandler] URL解码后: %s", decodedPath)
-
-	// 🔒 修复：在路径转换前检查是否包含危险字符
-	if strings.Contains(decodedPath, "..") {
-		log.Printf("[LocalFileHandler] 检测到路径遍历尝试")
+		case errors.Is(err, ErrPathTraversal):
 			http.Error(w, "Path traversal detected", http.StatusForbidden)
-		return
-	}
-
-	// 路径转换（统一使用反斜杠）
-	filePath := strings.ReplaceAll(decodedPath, "/", "\\")
-	filePath = filepath.Clean(filePath)
-	log.Printf("[LocalFileHandler] 最终路径: %s", filePath)
-
-	// 安全检查
-	if !isSafePath(filePath) {
-		log.Printf("[LocalFileHandler] 路径未通过安全检查: %s", filePath)
+		case errors.Is(err, ErrPathUnsafe):
 			http.Error(w, "Unsafe path", http.StatusForbidden)
+		default:
+			http.Error(w, err.Error(), http.StatusBadRequest)
+		}
 		return
 	}
+	log.Printf("[LocalFileHandler] 最终路径: %s", filePath)

 	// 🔒 文件类型白名单检查
 	ext := strings.ToLower(filepath.Ext(filePath))
@@ -459,33 +503,31 @@ func handleHtmlPreviewRequest(w http.ResponseWriter, r *http.Request) {
 	}

 	// 解析参数
-	filePath := r.URL.Query().Get("path")
-	var err error
-	if filePath, err = url.QueryUnescape(filePath); err != nil {
-		http.Error(w, "Invalid path encoding", http.StatusBadRequest)
-		return
-	}
+	rawPath := r.URL.Query().Get("path")
 	theme := r.URL.Query().Get("theme")
 	if theme == "" {
 		theme = "light"
 	}

-	log.Printf("[HtmlPreview] 收到请求: path=%s, theme=%s", filePath, theme)
-
-	// 安全检查
-	if !isSafePath(filePath) {
-		log.Printf("[HtmlPreview] 路径未通过安全检查: %s", filePath)
-		http.Error(w, "Unsafe path", http.StatusForbidden)
-		return
-	}
-
-	// 检查路径遍历攻击
-	if strings.Contains(filePath, "..") {
-		log.Printf("[HtmlPreview] 检测到路径遍历尝试: %s", filePath)
+	// 校验路径安全性（URL解码 + 路径遍历检测 + 安全检查）
+	filePath, err := validateFilePath(rawPath, "[HtmlPreview]")
+	if err != nil {
+		log.Printf("[HtmlPreview] 路径校验失败: %v (%s)", err, rawPath)
+		switch {
+		case errors.Is(err, ErrPathInvalidEncoding):
+			http.Error(w, "Invalid path encoding", http.StatusBadRequest)
+		case errors.Is(err, ErrPathTraversal):
 			http.Error(w, "Path traversal detected", http.StatusForbidden)
+		case errors.Is(err, ErrPathUnsafe):
+			http.Error(w, "Unsafe path", http.StatusForbidden)
+		default:
+			http.Error(w, err.Error(), http.StatusBadRequest)
+		}
 		return
 	}

+	log.Printf("[HtmlPreview] 收到请求: path=%s, theme=%s", filePath, theme)
+
 	// 读取文件
 	content, err := os.ReadFile(filePath)
 	if err != nil {
--- a/internal/filesystem/file_lock.go
+++ b/internal/filesystem/file_lock.go
@@ -1,3 +1,6 @@
+//go:build windows
+// +build windows
+
 package filesystem

 import (
--- a/internal/filesystem/file_lock_linux.go
+++ b/internal/filesystem/file_lock_linux.go
@@ -0,0 +1,19 @@
+//go:build !windows
+// +build !windows
+
+package filesystem
+
+// FileLockChecker 文件锁检查器（Linux 空实现）
+type FileLockChecker struct{}
+
+func NewFileLockChecker() *FileLockChecker {
+	return &FileLockChecker{}
+}
+
+func (c *FileLockChecker) IsFileLocked(_path string) (bool, string, error) {
+	return false, "", nil
+}
+
+func (c *FileLockChecker) SafeDeleteWithLockCheck(_path string) error {
+	return nil
+}
--- a/internal/model/member_info.go
+++ b/internal/model/member_info.go
@@ -1,26 +0,0 @@
-package model
-
-// MemberInfo 用户信息表
-type MemberInfo struct {
-	Memberid        int    `gorm:"primaryKey;column:memberid;type:int;comment:用户ID" json:"memberid"`
-	Membername      string `gorm:"column:membername;type:varchar(100);comment:姓名" json:"membername"`
-	Account         string `gorm:"column:account;type:varchar(100);comment:账号" json:"account"`
-	Password        string `gorm:"column:password;type:varchar(100);comment:密码" json:"-"`
-	Contactphone    string `gorm:"column:contactphone;type:varchar(50);comment:联系电话" json:"contactphone"`
-	Organid         int    `gorm:"column:organid;type:int;comment:所属机构ID" json:"organid"`
-	Createtime      string `gorm:"column:createtime;type:varchar(50);comment:创建时间" json:"createtime"`
-	Updatetime      string `gorm:"column:updatetime;type:varchar(50);comment:修改时间" json:"updatetime"`
-	Role            int16  `gorm:"column:role;type:smallint;comment:角色类别" json:"role"`
-	Status          int16  `gorm:"column:status;type:smallint;comment:状态 1正常 2停用 3删除" json:"status"`
-	Calluserid      string `gorm:"column:calluserid;type:varchar(100);comment:坐席用户ID" json:"calluserid"`
-	Remainingexport int    `gorm:"column:remainingexport;type:int;comment:本月剩余导出次数" json:"remainingexport"`
-
-	// 虚拟字段（关联查询）
-	Organname string `gorm:"-" json:"organname"` // 机构名称
-	Rolename  string `gorm:"-" json:"rolename"`  // 角色名称
-}
-
-// TableName 指定表名
-func (MemberInfo) TableName() string {
-	return "member_info"
-}
--- a/internal/service/config_service.go
+++ b/internal/service/config_service.go
@@ -42,11 +42,10 @@ type TabConfig struct {
 var defaultTabConfig = TabConfig{
 	AvailableTabs: []TabDefinition{
 		{Key: "file-system", Title: "文件管理", Enabled: true},
-		{Key: "db-cli", Title: "数据库", Enabled: true},
 		{Key: "markdown-editor", Title: "Markdown", Enabled: true},
-		{Key: "openclaw-manager", Title: "OpenClaw", Enabled: true},
+		{Key: "version", Title: "版本历史", Enabled: true},
 	},
-	VisibleTabs: []string{"file-system", "db-cli", "markdown-editor", "openclaw-manager"},
+	VisibleTabs: []string{"file-system", "markdown-editor", "version"},
 	DefaultTab:  "file-system",
 }

--- a/internal/service/connection_service.go
+++ b/internal/service/connection_service.go
@@ -1,268 +0,0 @@
-package service
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"u-desk/internal/crypto"
-	"u-desk/internal/dbclient"
-	"u-desk/internal/storage/models"
-	"u-desk/internal/storage/repository"
-
-	"gorm.io/gorm"
-)
-
-// ConnectionService 连接管理服务
-type ConnectionService struct {
-	repo repository.ConnectionRepository
-}
-
-// NewConnectionService 创建连接服务
-func NewConnectionService() (*ConnectionService, error) {
-	repo, err := repository.NewConnectionRepository()
-	if err != nil {
-		return nil, fmt.Errorf("创建连接仓库失败: %v", err)
-	}
-	return &ConnectionService{repo: repo}, nil
-}
-
-// SaveConnection 保存连接配置
-func (s *ConnectionService) SaveConnection(conn *models.DbConnection) error {
-	// 验证
-	if conn.Name == "" {
-		return fmt.Errorf("连接名称不能为空")
-	}
-	if conn.Type == "" {
-		return fmt.Errorf("数据库类型不能为空")
-	}
-	if conn.Host == "" {
-		return fmt.Errorf("主机地址不能为空")
-	}
-
-	// 检查名称是否重复
-	existing, err := s.repo.FindByName(conn.Name, conn.ID)
-	if err != nil {
-		return fmt.Errorf("检查连接名称失败: %v", err)
-	}
-	if existing != nil {
-		return fmt.Errorf("连接名称已存在")
-	}
-
-	// 处理密码
-	if conn.ID > 0 {
-		if conn.Password == "" {
-			// 更新模式：保留原密码
-			conn.Password, err = s.getPassword(conn.ID)
-			if err != nil {
-				return err
-			}
-		} else {
-			// 加密新密码
-			conn.Password, err = crypto.EncryptPassword(conn.Password)
-			if err != nil {
-				return fmt.Errorf("密码加密失败: %v", err)
-			}
-		}
-	} else {
-		// 新增模式：加密密码
-		conn.Password, err = crypto.EncryptPassword(conn.Password)
-		if err != nil {
-			return fmt.Errorf("密码加密失败: %v", err)
-		}
-	}
-
-	return s.repo.Save(conn)
-}
-
-// getPassword 获取原始密码
-func (s *ConnectionService) getPassword(id uint) (string, error) {
-	existing, err := s.repo.FindByID(id)
-	if err != nil {
-		return "", fmt.Errorf("获取原连接配置失败: %v", err)
-	}
-	return existing.Password, nil
-}
-
-// ListConnections 获取连接列表
-func (s *ConnectionService) ListConnections() ([]models.DbConnection, error) {
-	return s.repo.FindAll()
-}
-
-// GetConnection 获取连接详情
-func (s *ConnectionService) GetConnection(id uint) (*models.DbConnection, error) {
-	return s.repo.FindByID(id)
-}
-
-// DeleteConnection 删除连接配置（含关联数据和连接池清理）
-func (s *ConnectionService) DeleteConnection(id uint) error {
-	conn, err := s.repo.FindByID(id)
-	if err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil // 连接不存在视为成功
-		}
-		return fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	// 关闭连接池中的连接
-	dbclient.GetPool().CloseConnection(id, conn.Type)
-
-	// 删除连接记录
-	return s.repo.Delete(id)
-}
-
-// TestConnection 测试连接（通过已保存的连接ID）
-func (s *ConnectionService) TestConnection(id uint) error {
-	conn, err := s.repo.FindByID(id)
-	if err != nil {
-		return fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	// 解密密码用于测试
-	password, err := crypto.DecryptPassword(conn.Password)
-	if err != nil {
-		return fmt.Errorf("密码解密失败: %v", err)
-	}
-
-	// 根据类型测试连接
-	switch conn.Type {
-	case "mysql":
-		return dbclient.TestMySQLConnection(conn.Host, conn.Port, conn.Username, password, conn.Database)
-	case "redis":
-		return dbclient.TestRedisConnection(conn.Host, conn.Port, password)
-	case "mongo":
-		// 解析 Options 获取 MongoDB 连接参数
-		authSource := ""
-		authMechanism := ""
-		if conn.Options != "" {
-			var opts map[string]interface{}
-			if err := json.Unmarshal([]byte(conn.Options), &opts); err == nil {
-				if as, ok := opts["authSource"].(string); ok && as != "" {
-					authSource = as
-				}
-				if am, ok := opts["authMechanism"].(string); ok && am != "" {
-					authMechanism = am
-				}
-			}
-		}
-		return dbclient.TestMongoConnectionWithOptions(conn.Host, conn.Port, conn.Username, password, conn.Database, authSource, authMechanism)
-	default:
-		return fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// TestConnectionWithParams 测试连接（直接传入参数，不保存数据）
-func (s *ConnectionService) TestConnectionWithParams(connType, host string, port int, username, password, database, options string, existingId uint) error {
-	// 验证必填项
-	if connType == "" {
-		return fmt.Errorf("数据库类型不能为空")
-	}
-	if host == "" {
-		return fmt.Errorf("主机地址不能为空")
-	}
-
-	// 如果是编辑模式且密码为空，尝试获取已保存的密码
-	actualPassword := password
-	if existingId > 0 && password == "" {
-		conn, err := s.repo.FindByID(existingId)
-		if err != nil {
-			return fmt.Errorf("获取原连接配置失败: %v", err)
-		}
-		// 解密原密码
-		actualPassword, err = crypto.DecryptPassword(conn.Password)
-		if err != nil {
-			return fmt.Errorf("密码解密失败: %v", err)
-		}
-	}
-
-	// 根据类型测试连接
-	switch connType {
-	case "mysql":
-		return dbclient.TestMySQLConnection(host, port, username, actualPassword, database)
-	case "redis":
-		return dbclient.TestRedisConnection(host, port, actualPassword)
-	case "mongo":
-		// 解析 Options 获取 MongoDB 连接参数
-		authSource := ""
-		authMechanism := ""
-		if options != "" {
-			var opts map[string]interface{}
-			if err := json.Unmarshal([]byte(options), &opts); err == nil {
-				if as, ok := opts["authSource"].(string); ok && as != "" {
-					authSource = as
-				}
-				if am, ok := opts["authMechanism"].(string); ok && am != "" {
-					authMechanism = am
-				}
-			}
-		}
-		return dbclient.TestMongoConnectionWithOptions(host, port, username, actualPassword, database, authSource, authMechanism)
-	default:
-		return fmt.Errorf("不支持的数据库类型: %s", connType)
-	}
-}
-
-// LoadAllDatabases 加载全部数据库列表
-func (s *ConnectionService) LoadAllDatabases(dbType, host string, port int, username, password, database, options string, existingId uint) ([]string, error) {
-	// 如果是编辑模式且密码为空，尝试获取已保存的密码
-	actualPassword := password
-	if existingId > 0 && password == "" {
-		conn, err := s.repo.FindByID(existingId)
-		if err != nil {
-			return nil, fmt.Errorf("获取原连接配置失败: %v", err)
-		}
-		actualPassword, err = crypto.DecryptPassword(conn.Password)
-		if err != nil {
-			return nil, fmt.Errorf("密码解密失败: %v", err)
-		}
-	}
-
-	// 解析 MongoDB 选项
-	authSource := ""
-	authMechanism := ""
-	if options != "" {
-		var opts map[string]interface{}
-		if err := json.Unmarshal([]byte(options), &opts); err == nil {
-			authSource, _ = opts["authSource"].(string)
-			authMechanism, _ = opts["authMechanism"].(string)
-		}
-	}
-
-	switch dbType {
-	case "mysql":
-		return loadDatabasesForMySQL(host, port, username, actualPassword, database)
-	case "mongo":
-		return loadDatabasesForMongo(host, port, username, actualPassword, database, authSource, authMechanism)
-	case "redis":
-		return []string{}, nil
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", dbType)
-	}
-}
-
-func loadDatabasesForMySQL(host string, port int, username, password, defaultDatabase string) ([]string, error) {
-	config := &dbclient.MySQLConfig{
-		Host: host, Port: port, Username: username,
-		Password: password, Database: defaultDatabase,
-	}
-	client, err := dbclient.NewMySQLClient(config)
-	if err != nil {
-		return nil, err
-	}
-	defer client.Close()
-	return client.ListDatabases(context.Background())
-}
-
-func loadDatabasesForMongo(host string, port int, username, password, defaultDatabase, authSource, authMechanism string) ([]string, error) {
-	config := &dbclient.MongoConfig{
-		Host: host, Port: port, Username: username,
-		Password: password, Database: defaultDatabase,
-		AuthSource: authSource, AuthMechanism: authMechanism,
-	}
-	client, err := dbclient.NewMongoClient(config)
-	if err != nil {
-		return nil, err
-	}
-	defer client.Close()
-	return client.ListDatabases(context.Background())
-}
--- a/internal/service/sql_exec_service.go
+++ b/internal/service/sql_exec_service.go
@@ -1,475 +0,0 @@
-package service
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"strings"
-	"time"
-
-	"u-desk/internal/common"
-	"u-desk/internal/dbclient"
-	"u-desk/internal/storage/models"
-	"u-desk/internal/storage/repository"
-)
-
-// SqlExecService SQL执行服务
-type SqlExecService struct {
-	connRepo repository.ConnectionRepository
-	pool     *dbclient.ConnectionPool
-}
-
-// NewSqlExecService 创建SQL执行服务
-func NewSqlExecService() (*SqlExecService, error) {
-	connRepo, err := repository.NewConnectionRepository()
-	if err != nil {
-		return nil, err
-	}
-	return &SqlExecService{
-		connRepo: connRepo,
-		pool:     dbclient.GetPool(),
-	}, nil
-}
-
-// SqlResult SQL执行结果
-type SqlResult struct {
-	Type          string      `json:"type"`          // query/update/command
-	Data          interface{} `json:"data"`          // 查询结果数据
-	Columns       []string    `json:"columns"`       // 列顺序（仅查询时有效）
-	RowsAffected  int         `json:"rowsAffected"`  // 影响行数
-	ExecutionTime int64       `json:"executionTime"` // 执行时间（毫秒）
-}
-
-// ExecuteSQL 执行SQL语句
-// 注意：SQL 语句应该已经包含分页信息（LIMIT 和 OFFSET），由客户端添加
-func (s *SqlExecService) ExecuteSQL(connectionID uint, sqlStr string, database string) (*SqlResult, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	startTime := time.Now()
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutQuery)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		return s.executeMySQL(ctx, conn, sqlStr, database, startTime)
-	case "redis":
-		return s.executeRedis(ctx, conn, sqlStr, startTime)
-	case "mongo":
-		return s.executeMongo(ctx, conn, sqlStr, database, startTime)
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// executeMySQL 执行MySQL SQL
-func (s *SqlExecService) executeMySQL(ctx context.Context, conn *models.DbConnection, sqlStr string, database string, startTime time.Time) (*SqlResult, error) {
-	pc := s.pool.GetMySQLClient(conn)
-	if pc.Client == nil {
-		return nil, fmt.Errorf("获取 MySQL 客户端失败")
-	}
-	defer pc.Release()
-
-	sqlStr = strings.TrimSpace(sqlStr)
-	sqlUpper := strings.ToUpper(sqlStr)
-
-	// 获取数据库参数
-	dbName := database
-	if dbName == "" {
-		dbName = conn.Database
-	}
-
-	result := &SqlResult{
-		ExecutionTime: time.Since(startTime).Milliseconds(),
-	}
-
-	// 判断是查询还是更新
-	if strings.HasPrefix(sqlUpper, "SELECT") || strings.HasPrefix(sqlUpper, "SHOW") ||
-		strings.HasPrefix(sqlUpper, "DESCRIBE") || strings.HasPrefix(sqlUpper, "DESC") ||
-		strings.HasPrefix(sqlUpper, "EXPLAIN") {
-		// 查询语句
-		queryResult, err := pc.Client.ExecuteQuery(ctx, sqlStr, dbName)
-		if err != nil {
-			return nil, err
-		}
-		result.Type = "query"
-		result.Data = queryResult.Data
-		result.Columns = queryResult.Columns
-		result.RowsAffected = len(queryResult.Data)
-	} else {
-		// 更新语句
-		rowsAffected, err := pc.Client.ExecuteUpdate(ctx, sqlStr, dbName)
-		if err != nil {
-			return nil, err
-		}
-		result.Type = "update"
-		result.RowsAffected = int(rowsAffected)
-		result.Data = nil
-	}
-
-	return result, nil
-}
-
-// executeRedis 执行Redis命令
-func (s *SqlExecService) executeRedis(ctx context.Context, conn *models.DbConnection, sqlStr string, startTime time.Time) (*SqlResult, error) {
-	client, err := s.pool.GetRedisClient(conn)
-	if err != nil {
-		return nil, fmt.Errorf("获取 Redis 客户端失败: %v", err)
-	}
-
-	// 解析Redis命令
-	parts := parseRedisCommand(sqlStr)
-	if len(parts) == 0 {
-		return nil, fmt.Errorf("Redis 命令不能为空")
-	}
-
-	cmd := strings.ToUpper(parts[0])
-	args := make([]interface{}, 0)
-	for i := 1; i < len(parts); i++ {
-		args = append(args, parts[i])
-	}
-
-	data, err := client.ExecuteCommand(ctx, cmd, args...)
-	if err != nil {
-		return nil, err
-	}
-
-	return &SqlResult{
-		Type:          "command",
-		Data:          data,
-		RowsAffected:  1,
-		ExecutionTime: time.Since(startTime).Milliseconds(),
-	}, nil
-}
-
-// executeMongo 执行MongoDB命令
-func (s *SqlExecService) executeMongo(ctx context.Context, conn *models.DbConnection, sqlStr string, database string, startTime time.Time) (*SqlResult, error) {
-	client, err := s.pool.GetMongoClient(conn)
-	if err != nil {
-		return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-	}
-
-	// 解析MongoDB命令（JSON格式）
-	var command map[string]interface{}
-	sqlStr = strings.TrimSpace(sqlStr)
-	if err := json.Unmarshal([]byte(sqlStr), &command); err != nil {
-		return nil, fmt.Errorf("MongoDB 命令必须是有效的 JSON 格式: %v", err)
-	}
-
-	// 确定数据库
-	dbName := conn.Database
-	if db, ok := command["database"].(string); ok && db != "" {
-		dbName = db
-	}
-	if database != "" {
-		dbName = database
-	}
-	if dbName == "" {
-		return nil, fmt.Errorf("需要指定数据库名称")
-	}
-
-	// 执行命令
-	data, err := client.ExecuteCommand(ctx, dbName, command)
-	if err != nil {
-		return nil, err
-	}
-
-	result := &SqlResult{
-		Type:          "command",
-		Data:          data,
-		ExecutionTime: time.Since(startTime).Milliseconds(),
-	}
-
-	// 根据操作类型确定影响行数
-	if op, ok := command["op"].(string); ok {
-		switch op {
-		case "find":
-			if results, ok := data.([]map[string]interface{}); ok {
-				result.RowsAffected = len(results)
-			}
-		case "count":
-			if count, ok := data.(int64); ok {
-				result.RowsAffected = int(count)
-			}
-		case "insertOne", "deleteOne":
-			result.RowsAffected = 1
-		case "insertMany":
-			if resultMap, ok := data.(map[string]interface{}); ok {
-				if count, ok := resultMap["insertedCount"].(int); ok {
-					result.RowsAffected = count
-				}
-			}
-		default:
-			result.RowsAffected = 0
-		}
-	}
-
-	return result, nil
-}
-
-// GetDatabases 获取数据库列表
-func (s *SqlExecService) GetDatabases(connectionID uint) ([]string, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutFastQuery)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		return pc.Client.ListDatabases(ctx)
-	case "redis":
-		databases := make([]string, 16)
-		for i := 0; i < 16; i++ {
-			databases[i] = fmt.Sprintf("%d", i)
-		}
-		return databases, nil
-	case "mongo":
-		client, err := s.pool.GetMongoClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-		}
-		return client.ListDatabases(ctx)
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// GetTables 获取表列表（MySQL/MongoDB）或Key列表（Redis）
-func (s *SqlExecService) GetTables(connectionID uint, database string) ([]string, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutFastQuery)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		return pc.Client.ListTables(ctx, database)
-	case "redis":
-		client, err := s.pool.GetRedisClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 Redis 客户端失败: %v", err)
-		}
-		return client.GetKeys(ctx, database)
-	case "mongo":
-		client, err := s.pool.GetMongoClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-		}
-		return client.ListCollections(ctx, database)
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// parseRedisCommand 解析Redis命令
-func parseRedisCommand(cmd string) []string {
-	cmd = strings.TrimSpace(cmd)
-	if cmd == "" {
-		return []string{}
-	}
-
-	var parts []string
-	var current strings.Builder
-	inQuotes := false
-	quoteChar := byte(0)
-
-	for i := 0; i < len(cmd); i++ {
-		char := cmd[i]
-		if !inQuotes {
-			if char == '"' || char == '\'' {
-				inQuotes = true
-				quoteChar = char
-			} else if char == ' ' || char == '\t' {
-				if current.Len() > 0 {
-					parts = append(parts, current.String())
-					current.Reset()
-				}
-			} else {
-				current.WriteByte(char)
-			}
-		} else {
-			if char == quoteChar {
-				inQuotes = false
-				quoteChar = byte(0)
-			} else {
-				current.WriteByte(char)
-			}
-		}
-	}
-
-	if current.Len() > 0 {
-		parts = append(parts, current.String())
-	}
-	return parts
-}
-
-// GetTableStructure 获取表结构
-func (s *SqlExecService) GetTableStructure(connectionID uint, database, tableName string) (map[string]interface{}, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutQuery)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		structure, err := pc.Client.GetTableStructure(ctx, database, tableName)
-		if err != nil {
-			return nil, err
-		}
-		return map[string]interface{}{
-			"type":     "mysql",
-			"database": database,
-			"table":    tableName,
-			"columns":  structure,
-		}, nil
-
-	case "mongo":
-		client, err := s.pool.GetMongoClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-		}
-		structure, err := client.GetCollectionStructure(ctx, database, tableName)
-		if err != nil {
-			return nil, err
-		}
-		return map[string]interface{}{
-			"type":       "mongo",
-			"database":   database,
-			"collection": tableName,
-			"structure":  structure,
-		}, nil
-
-	case "redis":
-		client, err := s.pool.GetRedisClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 Redis 客户端失败: %v", err)
-		}
-		info, err := client.GetKeyInfo(ctx, tableName)
-		if err != nil {
-			return nil, err
-		}
-		return map[string]interface{}{
-			"type": "redis",
-			"key":  tableName,
-			"info": info,
-		}, nil
-
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// GetIndexes 获取索引列表
-func (s *SqlExecService) GetIndexes(connectionID uint, database, tableName string) ([]map[string]interface{}, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutQuery)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		return pc.Client.GetIndexes(ctx, database, tableName)
-
-	case "mongo", "redis":
-		return []map[string]interface{}{}, nil
-
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// PreviewTableStructure 预览表结构变更
-func (s *SqlExecService) PreviewTableStructure(connectionID uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutLongOp)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		return pc.Client.PreviewTableStructure(ctx, database, tableName, structure)
-
-	case "mongo":
-		client, err := s.pool.GetMongoClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-		}
-		return client.PreviewCollectionIndexes(ctx, database, tableName, structure)
-
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
-
-// UpdateTableStructure 更新表结构
-func (s *SqlExecService) UpdateTableStructure(connectionID uint, database, tableName string, structure map[string]interface{}) ([]string, error) {
-	conn, err := s.connRepo.FindByID(connectionID)
-	if err != nil {
-		return nil, fmt.Errorf("获取连接配置失败: %v", err)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutLongOp)
-	defer cancel()
-
-	switch conn.Type {
-	case "mysql":
-		pc := s.pool.GetMySQLClient(conn)
-		if pc.Client == nil {
-			return nil, fmt.Errorf("获取 MySQL 客户端失败")
-		}
-		defer pc.Release()
-		return pc.Client.UpdateTableStructure(ctx, database, tableName, structure)
-
-	case "mongo":
-		client, err := s.pool.GetMongoClient(conn)
-		if err != nil {
-			return nil, fmt.Errorf("获取 MongoDB 客户端失败: %v", err)
-		}
-		return client.UpdateCollectionIndexes(ctx, database, tableName, structure)
-
-	default:
-		return nil, fmt.Errorf("不支持的数据库类型: %s", conn.Type)
-	}
-}
--- a/internal/service/tab_service.go
+++ b/internal/service/tab_service.go
@@ -1,31 +0,0 @@
-package service
-
-import (
-	"fmt"
-	"u-desk/internal/storage/models"
-	"u-desk/internal/storage/repository"
-)
-
-// TabService 标签页管理服务
-type TabService struct {
-	repo repository.TabRepository
-}
-
-// NewTabService 创建标签页服务
-func NewTabService() (*TabService, error) {
-	repo, err := repository.NewTabRepository()
-	if err != nil {
-		return nil, fmt.Errorf("创建标签页仓库失败: %v", err)
-	}
-	return &TabService{repo: repo}, nil
-}
-
-// SaveTabs 保存标签页列表
-func (s *TabService) SaveTabs(tabs []models.SqlTab) error {
-	return s.repo.SaveAll(tabs)
-}
-
-// ListTabs 获取标签页列表
-func (s *TabService) ListTabs() ([]models.SqlTab, error) {
-	return s.repo.FindAll()
-}
--- a/internal/service/version.go
+++ b/internal/service/version.go
@@ -15,7 +15,7 @@ import (
 // ==================== 常量定义 ====================

 // AppVersion 应用版本号（发布时直接修改此处）
-const AppVersion = "0.3.3"
+const AppVersion = "0.4.0"

 // 版本号缓存
 var (
--- a/internal/storage/models/connection.go
+++ b/internal/storage/models/connection.go
@@ -1,26 +0,0 @@
-package models
-
-import (
-	"time"
-)
-
-// DbConnection 数据库连接配置
-type DbConnection struct {
-	ID               uint      `gorm:"primaryKey" json:"id"`
-	Name             string    `gorm:"type:varchar(100);not null" json:"name"` // 连接名称
-	Type             string    `gorm:"type:varchar(20);not null" json:"type"`  // 数据库类型: mysql/redis/mongo
-	Host             string    `gorm:"type:varchar(255);not null" json:"host"` // 主机地址
-	Port             int       `gorm:"not null" json:"port"`                   // 端口
-	Username         string    `gorm:"type:varchar(100)" json:"username"`      // 用户名
-	Password         string    `gorm:"type:varchar(500)" json:"-"`             // 密码（加密存储，不返回）
-	Database         string    `gorm:"type:varchar(100)" json:"database"`      // 数据库名（MySQL/MongoDB）
-	Options          string    `gorm:"type:text" json:"options"`               // 额外选项（JSON格式）
-	VisibleDatabases string    `gorm:"type:text" json:"visible_databases"`     // 可见数据库列表（JSON数组，为空则全部可见）
-	CreatedAt        time.Time `json:"created_at"`
-	UpdatedAt        time.Time `json:"updated_at"`
-}
-
-// TableName 指定表名
-func (DbConnection) TableName() string {
-	return "db_connection"
-}
--- a/internal/storage/models/sql_result_history.go
+++ b/internal/storage/models/sql_result_history.go
@@ -1,24 +0,0 @@
-package models
-
-import (
-	"time"
-)
-
-// SqlResultHistory SQL 执行结果历史
-type SqlResultHistory struct {
-	ID            uint      `gorm:"primaryKey" json:"id"`
-	ConnectionID  uint      `gorm:"index;not null" json:"connection_id"`   // 连接ID
-	Database      string    `gorm:"type:varchar(100)" json:"database"`     // 数据库名
-	Sql           string    `gorm:"type:text;not null" json:"sql"`         // SQL语句
-	Type          string    `gorm:"type:varchar(20);not null" json:"type"` // 结果类型: query/update/command
-	Data          string    `gorm:"type:text" json:"data"`                 // 结果数据(JSON)
-	Columns       string    `gorm:"type:text" json:"columns"`              // 列信息(JSON)
-	RowsAffected  int       `gorm:"default:0" json:"rows_affected"`        // 影响行数
-	ExecutionTime int64     `gorm:"default:0" json:"execution_time"`       // 执行时间(毫秒)
-	CreatedAt     time.Time `json:"created_at"`
-}
-
-// TableName 指定表名
-func (SqlResultHistory) TableName() string {
-	return "sql_result_history"
-}
--- a/internal/storage/models/sql_tab.go
+++ b/internal/storage/models/sql_tab.go
@@ -1,21 +0,0 @@
-package models
-
-import (
-	"time"
-)
-
-// SqlTab SQL 编辑器标签页
-type SqlTab struct {
-	ID           uint      `gorm:"primaryKey" json:"id"`
-	Title        string    `gorm:"type:varchar(100);not null" json:"title"` // 标签页标题
-	Content      string    `gorm:"type:text" json:"content"`                // SQL 内容
-	ConnectionID *uint     `gorm:"index" json:"connection_id"`              // 关联的连接ID（可为空）
-	Order        int       `gorm:"default:0" json:"order"`                  // 排序顺序
-	CreatedAt    time.Time `json:"created_at"`
-	UpdatedAt    time.Time `json:"updated_at"`
-}
-
-// TableName 指定表名
-func (SqlTab) TableName() string {
-	return "sql_tab"
-}
--- a/internal/storage/repository/connection_repo.go
+++ b/internal/storage/repository/connection_repo.go
@@ -1,70 +0,0 @@
-package repository
-
-import (
-	"u-desk/internal/storage"
-	"u-desk/internal/storage/models"
-
-	"gorm.io/gorm"
-)
-
-type ConnectionRepository interface {
-	Save(conn *models.DbConnection) error
-	FindAll() ([]models.DbConnection, error)
-	FindByID(id uint) (*models.DbConnection, error)
-	Delete(id uint) error
-	FindByName(name string, excludeID uint) (*models.DbConnection, error)
-}
-
-type connectionRepository struct {
-	db *gorm.DB
-}
-
-func NewConnectionRepository() (ConnectionRepository, error) {
-	db := storage.GetDB()
-	if db == nil {
-		var err error
-		db, err = storage.Init()
-		if err != nil {
-			return nil, err
-		}
-	}
-	return &connectionRepository{db}, nil
-}
-
-func (r *connectionRepository) Save(conn *models.DbConnection) error {
-	if conn.ID > 0 {
-		return r.db.Model(&models.DbConnection{}).Where("id = ?", conn.ID).Updates(conn).Error
-	}
-	return r.db.Create(conn).Error
-}
-
-func (r *connectionRepository) FindAll() ([]models.DbConnection, error) {
-	var connections []models.DbConnection
-	return connections, r.db.Order("created_at DESC").Find(&connections).Error
-}
-
-func (r *connectionRepository) FindByID(id uint) (*models.DbConnection, error) {
-	var conn models.DbConnection
-	err := r.db.First(&conn, id).Error
-	if err == gorm.ErrRecordNotFound {
-		return nil, nil
-	}
-	return &conn, err
-}
-
-func (r *connectionRepository) Delete(id uint) error {
-	return r.db.Delete(&models.DbConnection{}, id).Error
-}
-
-func (r *connectionRepository) FindByName(name string, excludeID uint) (*models.DbConnection, error) {
-	var conn models.DbConnection
-	query := r.db.Where("name = ?", name)
-	if excludeID > 0 {
-		query = query.Where("id != ?", excludeID)
-	}
-	err := query.First(&conn).Error
-	if err == gorm.ErrRecordNotFound {
-		return nil, nil
-	}
-	return &conn, err
-}
--- a/internal/storage/repository/result_repo.go
+++ b/internal/storage/repository/result_repo.go
@@ -1,90 +0,0 @@
-package repository
-
-import (
-	"encoding/json"
-	"u-desk/internal/storage"
-	"u-desk/internal/storage/models"
-	"gorm.io/gorm"
-)
-
-type ResultRepository interface {
-	Save(connectionID uint, database, sql string, resultType string, data interface{}, columns []string, rowsAffected int, executionTime int64) (*models.SqlResultHistory, error)
-	FindByID(id uint) (*models.SqlResultHistory, error)
-	Search(connectionID *uint, keyword string, limit, offset int) ([]models.SqlResultHistory, int64, error)
-	Delete(id uint) error
-}
-
-type resultRepository struct {
-	db *gorm.DB
-}
-
-func NewResultRepository() (ResultRepository, error) {
-	db := storage.GetDB()
-	if db == nil {
-		var err error
-		db, err = storage.Init()
-		if err != nil {
-			return nil, err
-		}
-	}
-	return &resultRepository{db}, nil
-}
-
-func (r *resultRepository) Save(connectionID uint, database, sql string, resultType string, data interface{}, columns []string, rowsAffected int, executionTime int64) (*models.SqlResultHistory, error) {
-	dataJSON, _ := json.Marshal(data)
-	columnsJSON, _ := json.Marshal(columns)
-
-	history := &models.SqlResultHistory{
-		ConnectionID:  connectionID,
-		Database:      database,
-		Sql:           sql,
-		Type:          resultType,
-		Data:          string(dataJSON),
-		Columns:       string(columnsJSON),
-		RowsAffected:  rowsAffected,
-		ExecutionTime: executionTime,
-	}
-
-	return history, r.db.Create(history).Error
-}
-
-func (r *resultRepository) FindByID(id uint) (*models.SqlResultHistory, error) {
-	var history models.SqlResultHistory
-	err := r.db.First(&history, id).Error
-	if err == gorm.ErrRecordNotFound {
-		return nil, nil
-	}
-	return &history, err
-}
-
-func (r *resultRepository) Search(connectionID *uint, keyword string, limit, offset int) ([]models.SqlResultHistory, int64, error) {
-	query := r.db.Model(&models.SqlResultHistory{})
-
-	if connectionID != nil {
-		query = query.Where("connection_id = ?", *connectionID)
-	}
-	if keyword != "" {
-		query = query.Where("sql LIKE ? OR database LIKE ?", "%"+keyword+"%", "%"+keyword+"%")
-	}
-
-	var total int64
-	if err := query.Count(&total).Error; err != nil {
-		return nil, 0, err
-	}
-
-	var histories []models.SqlResultHistory
-	query = query.Order("created_at DESC")
-	if limit > 0 {
-		query = query.Limit(limit)
-	}
-	if offset > 0 {
-		query = query.Offset(offset)
-	}
-
-	return histories, total, query.Find(&histories).Error
-}
-
-func (r *resultRepository) Delete(id uint) error {
-	return r.db.Delete(&models.SqlResultHistory{}, id).Error
-}
-
--- a/internal/storage/repository/tab_repo.go
+++ b/internal/storage/repository/tab_repo.go
@@ -1,51 +0,0 @@
-package repository
-
-import (
-	"u-desk/internal/storage"
-	"u-desk/internal/storage/models"
-	"gorm.io/gorm"
-)
-
-type TabRepository interface {
-	SaveAll(tabs []models.SqlTab) error
-	FindAll() ([]models.SqlTab, error)
-	Delete(id uint) error
-}
-
-type tabRepository struct {
-	db *gorm.DB
-}
-
-func NewTabRepository() (TabRepository, error) {
-	db := storage.GetDB()
-	if db == nil {
-		var err error
-		db, err = storage.Init()
-		if err != nil {
-			return nil, err
-		}
-	}
-	return &tabRepository{db}, nil
-}
-
-func (r *tabRepository) SaveAll(tabs []models.SqlTab) error {
-	return r.db.Transaction(func(tx *gorm.DB) error {
-		if err := tx.Where("1=1").Delete(&models.SqlTab{}).Error; err != nil {
-			return err
-		}
-		if len(tabs) > 0 {
-			return tx.Create(&tabs).Error
-		}
-		return nil
-	})
-}
-
-func (r *tabRepository) FindAll() ([]models.SqlTab, error) {
-	var tabs []models.SqlTab
-	return tabs, r.db.Order("`order` ASC, created_at ASC").Find(&tabs).Error
-}
-
-func (r *tabRepository) Delete(id uint) error {
-	return r.db.Delete(&models.SqlTab{}, id).Error
-}
-
--- a/internal/storage/sqlite.go
+++ b/internal/storage/sqlite.go
@@ -62,9 +62,6 @@ func InitFast() (*gorm.DB, error) {
 	// AutoMigrate 在启动时执行，但只在表结构不存在时创建
 	// SQLite 的 AutoMigrate 很快，不会造成明显延迟
 	if err := db.AutoMigrate(
-		&models.DbConnection{},
-		&models.SqlTab{},
-		&models.SqlResultHistory{},
 		&models.AppConfig{},
 	); err != nil {
 		return nil, err
--- a/wails.json
+++ b/wails.json
@@ -1,7 +1,7 @@
 {
  "name": "u-desk",
  "outputfilename": "u-desk",
-  "version": "0.3.3",
+  "version": "0.4.0",
  "frontend:install": "npm install",
  "frontend:build": "npm run build",
  "author": {
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -25,6 +25,7 @@
        "@codemirror/lang-yaml": "^6.1.2",
        "@codemirror/language": "^6.12.1",
        "@codemirror/legacy-modes": "^6.5.2",
+        "@codemirror/search": "^6.6.0",
        "@codemirror/state": "^6.5.3",
        "@codemirror/theme-one-dark": "^6.1.3",
        "@codemirror/view": "^6.39.8",
@@ -414,6 +415,17 @@
        "crelt": "^1.0.5"
      }
    },
+    "node_modules/@codemirror/search": {
+      "version": "6.6.0",
+      "resolved": "https://registry.npmmirror.com/@codemirror/search/-/search-6.6.0.tgz",
+      "integrity": "sha512-koFuNXcDvyyotWcgOnZGmY7LZqEOXZaaxD/j6n18TCLx2/9HieZJ5H6hs1g8FiRxBD0DNfs0nXn17g872RmYdw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.37.0",
+        "crelt": "^1.0.5"
+      }
+    },
    "node_modules/@codemirror/state": {
      "version": "6.5.3",
      "resolved": "https://registry.npmmirror.com/@codemirror/state/-/state-6.5.3.tgz",
--- a/web/package.json
+++ b/web/package.json
@@ -25,6 +25,7 @@
    "@codemirror/lang-yaml": "^6.1.2",
    "@codemirror/language": "^6.12.1",
    "@codemirror/legacy-modes": "^6.5.2",
+    "@codemirror/search": "^6.6.0",
    "@codemirror/state": "^6.5.3",
    "@codemirror/theme-one-dark": "^6.1.3",
    "@codemirror/view": "^6.39.8",
--- a/web/package.json.md5
+++ b/web/package.json.md5
@@ -1 +1 @@
-0e1fafcbb6b28922a38f6c5316932015
+c0e9e27e045c6118704c87fcf34a03de
--- a/web/src/App.vue
+++ b/web/src/App.vue
@@ -57,7 +57,7 @@
    <a-layout-content class="content">
      <!-- 动态渲染 Tab 内容 -->
      <!-- 使用 KeepAlive 缓存组件状态，避免切换时重新加载 -->
-      <KeepAlive include="FileSystem,DbCli">
+      <KeepAlive include="FileSystem">
        <component :is="getComponent(activeTab)"/>
      </KeepAlive>
    </a-layout-content>
@@ -94,19 +94,19 @@
 import {computed, onMounted, onUnmounted, ref, watch} from 'vue'
 import {IconSettings, IconPushpin} from '@arco-design/web-vue/es/icon'
 import MarkdownEditor from './views/markdown-editor/index.vue'
-import DbCli from './views/db-cli/index.vue'
 import VersionHistory from './views/version/index.vue'
 import ThemeToggle from './components/ThemeToggle.vue'
 import FileSystem from './components/FileSystem/index.vue'
 import SettingsPanel from './components/SettingsPanel.vue'
 import UpdateNotification from './components/UpdateNotification.vue'
 import {useUpdateStore} from './stores/update'
-import {useConfigStore} from './stores/config'
+import {useConfigStore, type AppConfig} from './stores/config'

 // 存储键
 const ACTIVE_TAB_STORAGE_KEY = 'app-active-tab'

 // 从 localStorage 恢复上次打开的区域，默认为 'file-system'
+// 兼容旧版：'user' 是 v0.2.x 之前的 tab key，已废弃需迁移
 const savedTab = localStorage.getItem(ACTIVE_TAB_STORAGE_KEY)
 const activeTab = ref((savedTab === 'user' ? 'file-system' : savedTab) || 'file-system')
 const showSettings = ref(false)
@@ -125,7 +125,7 @@ const appConfig = computed(() => configStore.appConfig)
 const visibleTabs = computed(() => configStore.visibleTabs)

 // 保存配置
-const handleSaveConfig = async (config) => {
+const handleSaveConfig = async (config: AppConfig) => {
  try {
    await configStore.saveConfig(config)
    showSettings.value = false
@@ -148,10 +148,9 @@ const loadConfig = async () => {
 }

 // 获取组件
-const getComponent = (key) => {
+const getComponent = (key: string) => {
  const components = {
    'file-system': FileSystem,
-    'db-cli': DbCli,
    'markdown-editor': MarkdownEditor
  }
  return components[key] || null
@@ -376,4 +375,9 @@ watch(activeTab, (newTab) => {
 .arco-tooltip {
  --wails-draggable: no-drag;
 }
+
+/* 桌面应用：禁止 html/body 级别滚动条，所有滚动由内部组件自行处理 */
+html, body {
+  overflow: hidden !important;
+}
 </style>
--- a/web/src/api/connection-manager.ts
+++ b/web/src/api/connection-manager.ts
@@ -0,0 +1,199 @@
+/**
+ * 连接管理器 — 管理本地/远程传输层切换
+ */
+
+import type { FsTransport } from './transport'
+import { WailsTransport } from './wails-transport'
+import { HttpTransport } from './http-transport'
+
+export type ConnectionType = 'local' | 'remote'
+
+export interface ConnectionProfile {
+  id: string
+  name: string
+  host: string
+  port: number
+  token: string
+  type: ConnectionType
+  lastConnected?: number
+}
+
+export type ConnectionState = 'disconnected' | 'connecting' | 'connected' | 'error'
+
+const PROFILES_KEY = 'fs_connection_profiles'
+const ACTIVE_KEY = 'fs_active_connection'
+
+class ConnectionManagerImpl {
+  private _transport: FsTransport | null = null
+  private _profiles: ConnectionProfile[] = []
+  private _activeId: string | null = null
+  private _state: ConnectionState = 'disconnected'
+  private _stateChangeCallbacks: ((state: ConnectionState) => void)[] = []
+  private _connectSeq = 0
+
+  constructor() {
+    this.loadProfiles()
+    this.initDefaultLocal()
+  }
+
+  private initDefaultLocal() {
+    const localProfile: ConnectionProfile = {
+      id: 'local-default',
+      name: '本地',
+      host: '',
+      port: 0,
+      token: '',
+      type: 'local',
+    }
+    if (!this._profiles.find(p => p.id === localProfile.id)) {
+      this._profiles.unshift(localProfile)
+    }
+    // 默认连接本地
+    if (!this._activeId) {
+      this._activeId = localProfile.id
+    }
+    this.applyActive()
+  }
+
+  private loadProfiles() {
+    try {
+      const raw = localStorage.getItem(PROFILES_KEY)
+      if (raw) this._profiles = JSON.parse(raw)
+      this._activeId = localStorage.getItem(ACTIVE_KEY)
+    } catch { /* 首次使用 */ }
+  }
+
+  private saveProfiles() {
+    localStorage.setItem(PROFILES_KEY, JSON.stringify(this._profiles))
+    if (this._activeId) {
+      localStorage.setItem(ACTIVE_KEY, this._activeId)
+    }
+  }
+
+  private setState(state: ConnectionState) {
+    this._state = state
+    this.notifyChange()
+  }
+
+  private notifyChange() {
+    this._stateChangeCallbacks.forEach(cb => cb(this._state))
+  }
+
+  onStateChange(cb: (state: ConnectionState) => void) {
+    this._stateChangeCallbacks.push(cb)
+  }
+
+  get state(): ConnectionState {
+    return this._state
+  }
+
+  get profiles(): ConnectionProfile[] {
+    return [...this._profiles]
+  }
+
+  get activeProfile(): ConnectionProfile | null {
+    return this._profiles.find(p => p.id === this._activeId) ?? null
+  }
+
+  getTransport(): FsTransport {
+    if (!this._transport) {
+      this.applyActive()
+    }
+    return this._transport!
+  }
+
+  getFileServerBaseURL(): string {
+    if (this._transport instanceof HttpTransport) {
+      const profile = this.activeProfile
+      if (!profile) return ''
+      const scheme = profile.port === 443 ? 'https' : 'http'
+      const port = (profile.port === 80 || profile.port === 443) ? '' : `:${profile.port}`
+      return `${scheme}://${profile.host}${port}`
+    }
+    // Wails 模式返回空字符串，让 useFilePreview 走原有逻辑
+    return ''
+  }
+
+  isRemote(): boolean {
+    return this.activeProfile?.type === 'remote'
+  }
+
+  connect(profileId: string): void {
+    const profile = this._profiles.find(p => p.id === profileId)
+    if (!profile) return
+
+    this._activeId = profileId
+    this.saveProfiles()
+    this.applyActive()
+  }
+
+  disconnect(): void {
+    this._activeId = 'local-default'
+    this.saveProfiles()
+    this.applyActive()
+  }
+
+  addProfile(profile: Omit<ConnectionProfile, 'id'>): ConnectionProfile {
+    const newProfile: ConnectionProfile = {
+      ...profile,
+      id: crypto.randomUUID(),
+    }
+    this._profiles.push(newProfile)
+    this.saveProfiles()
+    this.notifyChange()
+    return newProfile
+  }
+
+  updateProfile(id: string, updates: Partial<ConnectionProfile>): void {
+    const idx = this._profiles.findIndex(p => p.id === id)
+    if (idx >= 0) {
+      this._profiles[idx] = { ...this._profiles[idx], ...updates }
+      this.saveProfiles()
+      // 仅当连接参数变化时重新应用（避免 lastConnected 等元数据更新触发死循环）
+      const REAPPLY_KEYS = ['host', 'port', 'token'] as const
+      const needsReapply = REAPPLY_KEYS.some(k => k in updates)
+      if (needsReapply && id === this._activeId) {
+        this.applyActive()
+      }
+      this.notifyChange()
+    }
+  }
+
+  removeProfile(id: string): void {
+    if (id === 'local-default') return // 不允许删除本地配置
+    this._profiles = this._profiles.filter(p => p.id !== id)
+    if (this._activeId === id) {
+      this._activeId = 'local-default'
+    }
+    this.saveProfiles()
+    this.applyActive()
+    this.notifyChange()
+  }
+
+  private applyActive() {
+    const profile = this.activeProfile
+    const seq = ++this._connectSeq
+    if (!profile || profile.type === 'local') {
+      this._transport = new WailsTransport()
+      this.setState('connected')
+    } else {
+      this.setState('connecting')
+      try {
+        this._transport = new HttpTransport(profile.host, profile.port, profile.token)
+        // 快速连通性检查（用轻量 ping 代替 getCommonPaths）
+        this._transport.getFileInfo('/').then(() => {
+          if (seq !== this._connectSeq) return // 已被后续连接覆盖
+          this.setState('connected')
+          this.updateProfile(profile.id!, { lastConnected: Date.now() })
+        }).catch(() => {
+          if (seq !== this._connectSeq) return
+          this.setState('error')
+        })
+      } catch {
+        this.setState('error')
+      }
+    }
+  }
+}
+
+export const connectionManager = new ConnectionManagerImpl()
--- a/web/src/api/connection.ts
+++ b/web/src/api/connection.ts
@@ -1,25 +0,0 @@
-/**
- * 连接相关 API
- */
-
-import type { Connection } from './types'
-
-/**
- * 获取连接列表
- */
-export async function listConnections(): Promise<Connection[]> {
-  if (!window.go?.main?.App?.ListDbConnections) {
-    throw new Error('ListDbConnections API 不可用')
-  }
-  return await window.go.main.App.ListDbConnections()
-}
-
-/**
- * 删除连接
- */
-export async function deleteConnection(id: number): Promise<void> {
-  if (!window.go?.main?.App?.DeleteDbConnection) {
-    throw new Error('DeleteDbConnection API 不可用')
-  }
-  await window.go.main.App.DeleteDbConnection(id)
-}
--- a/web/src/api/database.ts
+++ b/web/src/api/database.ts
@@ -1,25 +0,0 @@
-/**
- * 数据库和表相关 API
- */
-
-import type { Database, Table } from './types'
-
-/**
- * 获取数据库列表
- */
-export async function getDatabases(connectionId: number): Promise<Database[]> {
-  if (!window.go?.main?.App?.GetDatabases) {
-    throw new Error('GetDatabases API 不可用')
-  }
-  return await window.go.main.App.GetDatabases(connectionId)
-}
-
-/**
- * 获取表列表
- */
-export async function getTables(connectionId: number, database: string): Promise<Table[]> {
-  if (!window.go?.main?.App?.GetTables) {
-    throw new Error('GetTables API 不可用')
-  }
-  return await window.go.main.App.GetTables(connectionId, database)
-}
--- a/web/src/api/http-transport.ts
+++ b/web/src/api/http-transport.ts
@@ -0,0 +1,136 @@
+/**
+ * Http Transport — 远程文件操作（通过 u-fs-agent REST API）
+ */
+
+import type { FsTransport, FileItem, FileOperationResult, DetectTypeResult } from './transport'
+
+const CONTENT_TYPE = 'application/json'
+
+export class HttpTransport implements FsTransport {
+  private baseUrl: string
+  private token: string
+
+  constructor(host: string, port: number, token: string) {
+    const scheme = port === 443 ? 'https' : 'http'
+    this.baseUrl = `${scheme}://${host}${port === 80 || port === 443 ? '' : ':' + port}`
+    this.token = token
+  }
+
+  private headers(): HeadersInit {
+    const h: Record<string, string> = { 'Content-Type': CONTENT_TYPE }
+    if (this.token) h['Authorization'] = `Bearer ${this.token}`
+    return h
+  }
+
+  private async request<T>(method: string, path: string, params?: Record<string, string>, body?: any): Promise<T> {
+    const url = `${this.baseUrl}${path}`
+    const searchParams = params ? '?' + new URLSearchParams(params).toString() : ''
+    const opts: RequestInit = {
+      method,
+      headers: this.headers(),
+    }
+    if (body !== undefined) opts.body = JSON.stringify(body)
+
+    const res = await fetch(url + searchParams, opts)
+    if (!res.ok) {
+      const text = await res.text().catch(() => '')
+      throw new Error(`HTTP ${res.status}: ${text.slice(0, 200)}`)
+    }
+    const data = await res.json()
+
+    if (data.code >= 400) {
+      throw new Error(data.message || `请求失败 (code=${data.code})`)
+    }
+    return data.data ?? data
+  }
+
+  async listDir(path: string): Promise<FileItem[]> {
+    return this.request<FileItem[]>('GET', '/api/v1/fs', { path })
+  }
+
+  async getFileInfo(path: string): Promise<Record<string, any>> {
+    return this.request<Record<string, any>>('GET', '/api/v1/fs', { path, get: 'stat' })
+  }
+
+  async readFile(path: string): Promise<string> {
+    const data = await this.request<{ content: string }>('GET', '/api/v1/fs/read', { path })
+    return data.content
+  }
+
+  async writeFile(path: string, content: string): Promise<void> {
+    await this.request('PUT', '/api/v1/fs/write', { path }, { content })
+  }
+
+  async saveBase64File(path: string, content: string): Promise<void> {
+    if (!content) throw new Error('无效的 base64 内容')
+    await this.request('POST', '/api/v1/fs/upload', { path }, { content })
+  }
+
+  async createFile(dirPath: string, filename: string): Promise<FileOperationResult> {
+    return this.request<FileOperationResult>('POST', '/api/v1/fs/create', { path: dirPath }, { type: 'file', name: filename })
+  }
+
+  async createDir(parentPath: string, dirname: string): Promise<FileOperationResult> {
+    return this.request<FileOperationResult>('POST', '/api/v1/fs/create', { path: parentPath }, { type: 'dir', name: dirname })
+  }
+
+  async deletePath(path: string): Promise<FileOperationResult> {
+    return this.request<FileOperationResult>('DELETE', '/api/v1/fs/delete', { path })
+  }
+
+  async renamePath(oldPath: string, newPath: string): Promise<FileOperationResult> {
+    return this.request<FileOperationResult>('PATCH', '/api/v1/fs/rename', { path: oldPath }, { new_path: newPath })
+  }
+
+  async listZipContents(zipPath: string): Promise<FileItem[]> {
+    // Wave 3 实现
+    throw new Error('ZIP 操作在远程模式暂未实现')
+  }
+
+  async extractFileFromZip(_zipPath: string, _filePath: string): Promise<string> {
+    throw new Error('ZIP 操作在远程模式暂未实现')
+  }
+
+  async extractFileFromZipToTemp(_zipPath: string, _filePath: string): Promise<string> {
+    throw new Error('ZIP 操作在远程模式暂未实现')
+  }
+
+  async getZipFileInfo(_zipPath: string, _filePath: string): Promise<FileItem> {
+    throw new Error('ZIP 操作在远程模式暂未实现')
+  }
+
+  async openPath(_path: string): Promise<void> {
+    throw new Error('远程模式不支持打开本地路径')
+  }
+
+  async getFileServerURL(): Promise<string> {
+    return `${this.baseUrl}/api/v1/proxy/localfs`
+  }
+
+  /** 远程模式预览用的认证 token（拼接到 URL query） */
+  getPreviewToken(): string {
+    return this.token
+  }
+
+  async resolveShortcut(_lnkPath: string): Promise<any> {
+    return null
+  }
+
+  async detectFileTypeByContent(path: string): Promise<DetectTypeResult> {
+    return this.request<DetectTypeResult>('GET', '/api/v1/fs/detect', { path })
+  }
+
+  async getCommonPaths(): Promise<Record<string, string>> {
+    return this.request<Record<string, string>>('GET', '/api/v1/system/common-paths')
+  }
+
+  async getRecycleBinEntries(): Promise<any[]> {
+    return []
+  }
+
+  async restoreFromRecycleBin(_path: string): Promise<void> {}
+
+  async deletePermanently(_path: string): Promise<void> {}
+
+  async emptyRecycleBin(): Promise<void> {}
+}
--- a/web/src/api/index.ts
+++ b/web/src/api/index.ts
@@ -3,9 +3,4 @@
 */

 export * from './types'
-export * from './connection'
-export * from './database'
-export * from './structure'
-export * from './query'
-export * from './tab'
 export * from './system'
--- a/web/src/api/query.ts
+++ b/web/src/api/query.ts
@@ -1,21 +0,0 @@
-/**
- * SQL 查询相关 API
- */
-
-import type { QueryResult } from './types'
-
-/**
- * 执行 SQL 查询
- */
-export async function executeQuery(
-  connectionId: number,
-  sql: string,
-  database?: string,
-  page?: number,
-  pageSize?: number
-): Promise<QueryResult> {
-  if (!window.go?.main?.App?.ExecuteSQL) {
-    throw new Error('ExecuteSQL API 不可用')
-  }
-  return await window.go.main.App.ExecuteSQL(connectionId, sql, database, page, pageSize)
-}
--- a/web/src/api/structure.ts
+++ b/web/src/api/structure.ts
@@ -1,19 +0,0 @@
-/**
- * 表结构相关 API
- */
-
-import type { Structure } from './types'
-
-/**
- * 获取表结构
- */
-export async function getTableStructure(
-  connectionId: number,
-  database: string,
-  table: string
-): Promise<Structure> {
-  if (!window.go?.main?.App?.GetTableStructure) {
-    throw new Error('GetTableStructure API 不可用')
-  }
-  return await window.go.main.App.GetTableStructure(connectionId, database, table)
-}
--- a/web/src/api/system.ts
+++ b/web/src/api/system.ts
@@ -1,306 +1,110 @@
 /**
- * 系统信息相关 API
+ * 系统信息相关 API — 委托给 Transport 层
+ * 本地模式走 Wails IPC，远程模式走 HTTP REST API
 */

-import type { SystemInfo, CPU, Memory, Disk, File } from './types'
-import { debugError } from '@/utils/debugLog'
+import type { File } from './types'
+import { connectionManager } from './connection-manager'

 /**
 * 转换后端文件数据格式（蛇形 → 驼峰）
- * 后端返回 is_dir，前端使用 isDir
 */
 function transformFile(file: any): File {
-  return {
-    ...file,
-    isDir: file.is_dir,
-    modified_time: file.mod_time
-  }
+  return { ...file, isDir: file.is_dir, modified_time: file.mod_time }
 }

-/**
- * 批量转换文件列表
- */
 function transformFileList(files: any[]): File[] {
  return files.map(transformFile)
 }

-/**
- * 获取系统信息
- */
-export async function getSystemInfo(): Promise<SystemInfo> {
-  if (!window.go?.main?.App?.GetSystemInfo) {
-    throw new Error('GetSystemInfo API 不可用')
-  }
-  return await window.go.main.App.GetSystemInfo()
+const t = () => connectionManager.getTransport()
+
+export async function getSystemInfo() { return t().getFileInfo('/') }
+
+export async function getCPUInfo() {
+  if (connectionManager.isRemote()) return {}
+  try { return await (window.go?.main?.App?.GetCPUInfo?.()) ?? {} } catch { return {} }
 }

-/**
- * 获取 CPU 信息
- */
-export async function getCPUInfo(): Promise<CPU> {
-  if (!window.go?.main?.App?.GetCPUInfo) {
-    throw new Error('GetCPUInfo API 不可用')
-  }
-  return await window.go.main.App.GetCPUInfo()
+export async function getMemoryInfo() {
+  if (connectionManager.isRemote()) return {}
+  try { return await (window.go?.main?.App?.GetMemoryInfo?.()) ?? {} } catch { return {} }
 }

-/**
- * 获取内存信息
- */
-export async function getMemoryInfo(): Promise<Memory> {
-  if (!window.go?.main?.App?.GetMemoryInfo) {
-    throw new Error('GetMemoryInfo API 不可用')
-  }
-  return await window.go.main.App.GetMemoryInfo()
+export async function getDiskInfo() {
+  if (connectionManager.isRemote()) return {}
+  try { return await (window.go?.main?.App?.GetDiskInfo?.()) ?? {} } catch { return {} }
 }

-/**
- * 获取磁盘信息
- */
-export async function getDiskInfo(): Promise<Disk> {
-  if (!window.go?.main?.App?.GetDiskInfo) {
-    throw new Error('GetDiskInfo API 不可用')
-  }
-  return await window.go.main.App.GetDiskInfo()
-}
-
-/**
- * 列出目录文件
- */
 export async function listDir(path: string): Promise<File[]> {
-  if (!window.go?.main?.App?.ListDir) {
-    throw new Error('ListDir API 不可用')
-  }
-
-  const files = await window.go.main.App.ListDir(path)
-  return transformFileList(files)
+  return transformFileList(await t().listDir(path))
 }

-/**
- * 读取文件
- */
 export async function readFile(path: string): Promise<string> {
-  if (!window.go?.main?.App?.ReadFile) {
-    throw new Error('ReadFile API 不可用')
-  }
-  return await window.go.main.App.ReadFile(path)
+  return t().readFile(path)
 }

-/**
- * 写入文件
- */
 export async function writeFile(path: string, content: string): Promise<void> {
-  if (!window.go?.main?.App?.WriteFile) {
-    throw new Error('WriteFile API 不可用')
-  }
-  // 确保传递的是字符串类型
-  await window.go.main.App.WriteFile({
-    path: String(path),
-    content: String(content)
-  })
+  await t().writeFile(path, String(content))
 }

-/**
- * 保存 Base64 编码的二进制文件（图片等）
- */
 export async function saveBase64File(path: string, base64Content: string): Promise<void> {
-  if (!window.go?.main?.App?.SaveBase64File) {
-    throw new Error('SaveBase64File API 不可用')
-  }
-  if (!base64Content) {
-    throw new Error('无效的 base64 内容')
-  }
-  await window.go.main.App.SaveBase64File({
-    path: String(path),
-    content: base64Content
-  })
+  if (!base64Content) throw new Error('无效的 base64 内容')
+  await t().saveBase64File(path, base64Content)
 }

-/**
- * 删除文件或目录
- */
 export async function deletePath(path: string): Promise<any> {
-  if (!window.go?.main?.App?.DeletePath) {
-    throw new Error('DeletePath API 不可用')
-  }
-  return await window.go.main.App.DeletePath(path)
+  return t().deletePath(path)
 }

-/**
- * 创建目录（parentPath + dirname 拼接为完整路径）
- */
 export async function createDir(parentPath: string, dirname: string): Promise<any> {
-  if (!window.go?.main?.App?.CreateDir) {
-    throw new Error('CreateDir API 不可用')
-  }
-  const fullPath = parentPath.replace(/\/$/, '') + '/' + dirname
-  return await window.go.main.App.CreateDir(fullPath)
+  return t().createDir(parentPath, dirname)
 }

-/**
- * 创建文件（dirPath + filename 拼接为完整路径）
- */
 export async function createFile(dirPath: string, filename: string): Promise<any> {
-  if (!window.go?.main?.App?.CreateFile) {
-    throw new Error('CreateFile API 不可用')
-  }
-  const fullPath = dirPath.replace(/\/$/, '') + '/' + filename
-  return await window.go.main.App.CreateFile(fullPath)
+  return t().createFile(dirPath, filename)
 }

-/**
- * 重命名文件或目录
- */
 export async function renamePath(oldPath: string, newPath: string): Promise<any> {
-  if (!window.go?.main?.App?.RenamePath) {
-    throw new Error('RenamePath API 不可用')
-  }
-  return await window.go.main.App.RenamePath({
-    oldPath: String(oldPath),
-    newPath: String(newPath)
-  })
+  return t().renamePath(oldPath, String(newPath))
 }

-/**
- * 获取环境变量
- */
 export async function getEnvVars(): Promise<Record<string, string>> {
-  if (!window.go?.main?.App?.GetEnvVars) {
-    throw new Error('GetEnvVars API 不可用')
-  }
-  return await window.go.main.App.GetEnvVars()
+  try { return await (window.go?.main?.App?.GetEnvVars?.()) ?? {} } catch { return {} }
 }

-/**
- * 列出 zip 文件内容
- */
 export async function listZipContents(zipPath: string): Promise<File[]> {
-  if (!window.go?.main?.App?.ListZipContents) {
-    throw new Error('ListZipContents API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.ListZipContents(zipPath)
-    return transformFileList(result)
-  } catch (error) {
-    debugError('[API] listZipContents 错误:', error)
-    throw error
-  }
+  return transformFileList(await t().listZipContents(zipPath))
 }

-/**
- * 从 zip 文件中提取单个文件内容
- */
 export async function extractFileFromZip(zipPath: string, filePath: string): Promise<string> {
-  if (!window.go?.main?.App?.ExtractFileFromZip) {
-    throw new Error('ExtractFileFromZip API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.ExtractFileFromZip(zipPath, filePath)
-    return result
-  } catch (error) {
-    debugError('[API] extractFileFromZip 错误:', error)
-    throw error
-  }
+  return t().extractFileFromZip(zipPath, filePath)
 }

-/**
- * 从 zip 文件中提取单个文件到临时目录
- * 返回临时文件的完整路径，适用于图片等二进制文件
- */
 export async function extractFileFromZipToTemp(zipPath: string, filePath: string): Promise<string> {
-  if (!window.go?.main?.App?.ExtractFileFromZipToTemp) {
-    throw new Error('ExtractFileFromZipToTemp API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.ExtractFileFromZipToTemp(zipPath, filePath)
-    return result
-  } catch (error) {
-    debugError('[API] extractFileFromZipToTemp 错误:', error)
-    throw error
-  }
+  return t().extractFileFromZipToTemp(zipPath, filePath)
 }

-/**
- * 获取 zip 文件中特定文件的信息
- */
 export async function getZipFileInfo(zipPath: string, filePath: string): Promise<File> {
-  if (!window.go?.main?.App?.GetZipFileInfo) {
-    throw new Error('GetZipFileInfo API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.GetZipFileInfo(zipPath, filePath)
-    return transformFile(result)
-  } catch (error) {
-    debugError('[API] getZipFileInfo 错误:', error)
-    throw error
-  }
+  return transformFile(await t().getZipFileInfo(zipPath, filePath))
 }

-/**
- * 使用系统默认程序打开文件或目录
- */
 export async function openPath(path: string): Promise<void> {
-  if (!window.go?.main?.App?.OpenPath) {
-    throw new Error('OpenPath API 不可用')
-  }
-  try {
-    await window.go.main.App.OpenPath(path)
-  } catch (error) {
-    debugError('[API] openPath 错误:', error)
-    throw error
-  }
+  await t().openPath(path)
 }

-/**
- * 获取本地文件服务器URL
- */
 export async function getFileServerURL(): Promise<string> {
-  if (!window.go?.main?.App?.GetFileServerURL) {
-    throw new Error('GetFileServerURL API 不可用')
-  }
-  return await window.go.main.App.GetFileServerURL()
+  return t().getFileServerURL()
 }

-/**
- * 解析快捷方式文件，返回目标路径信息
- */
-export async function resolveShortcut(lnkPath: string): Promise<{
-  success: boolean
-  message?: string
-  targetPath?: string
-  targetExists?: boolean
-  targetAccessible?: boolean
-  targetInfo?: any
-}> {
-  if (!window.go?.main?.App?.ResolveShortcut) {
-    throw new Error('ResolveShortcut API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.ResolveShortcut(lnkPath)
-    return result
-  } catch (error) {
-    debugError('[API] resolveShortcut 错误:', error)
-    throw error
-  }
+export async function resolveShortcut(lnkPath: string): Promise<any> {
+  return t().resolveShortcut(lnkPath)
 }

-/**
- * 通过文件内容检测文件类型（用于小文件，500KB以内）
- */
-export async function detectFileTypeByContent(path: string): Promise<{
-  extension: string
-  category: string  // 'image' | 'text' | 'binary' | 'pdf' | 'archive' | 'unknown'
-  mime_type: string
-  confidence: number
-}> {
-  if (!window.go?.main?.App?.DetectFileTypeByContent) {
-    throw new Error('DetectFileTypeByContent API 不可用')
-  }
-  try {
-    const result = await window.go.main.App.DetectFileTypeByContent(path)
-    return result as any
-  } catch (error) {
-    debugError('[API] detectFileTypeByContent 错误:', error)
-    throw error
-  }
+export async function detectFileTypeByContent(path: string) {
+  return t().detectFileTypeByContent(path)
+}
+
+export async function getCommonPaths() {
+  return t().getCommonPaths()
 }
--- a/web/src/api/tab.ts
+++ b/web/src/api/tab.ts
@@ -1,25 +0,0 @@
-/**
- * 标签页相关 API
- */
-
-import type { Tab } from './types'
-
-/**
- * 保存标签页
- */
-export async function saveTabs(tabs: Tab[]): Promise<void> {
-  if (!window.go?.main?.App?.SaveSqlTabs) {
-    throw new Error('SaveSqlTabs API 不可用')
-  }
-  await window.go.main.App.SaveSqlTabs(tabs)
-}
-
-/**
- * 获取标签页列表
- */
-export async function listTabs(): Promise<Tab[]> {
-  if (!window.go?.main?.App?.ListSqlTabs) {
-    throw new Error('ListSqlTabs API 不可用')
-  }
-  return await window.go.main.App.ListSqlTabs()
-}
--- a/web/src/api/transport.ts
+++ b/web/src/api/transport.ts
@@ -0,0 +1,71 @@
+/**
+ * 文件系统传输层接口
+ * 本地模式走 Wails IPC，远程模式走 HTTP REST API
+ * Composable 和组件不感知底层差异
+ */
+
+export type FileItem = {
+  name: string
+  path: string
+  size: number
+  size_str?: string
+  is_dir: boolean
+  mod_time?: string
+  mode?: string
+}
+
+export type FileOperationResult = {
+  path: string
+  name: string
+  size: number
+  size_str?: string
+  is_dir: boolean
+  mod_time?: string
+  mode?: string
+  old_path?: string
+  deleted?: boolean
+}
+
+export type DetectTypeResult = {
+  extension: string
+  category: string
+  mime_type: string
+  confidence: number
+}
+
+export interface FsTransport {
+  // 文件列表与信息
+  listDir(path: string): Promise<FileItem[]>
+  getFileInfo(path: string): Promise<Record<string, any>>
+
+  // 文件读写
+  readFile(path: string): Promise<string>
+  writeFile(path: string, content: string): Promise<void>
+  saveBase64File(path: string, content: string): Promise<void>
+
+  // 文件操作
+  createFile(dirPath: string, filename: string): Promise<FileOperationResult>
+  createDir(parentPath: string, dirname: string): Promise<FileOperationResult>
+  deletePath(path: string): Promise<FileOperationResult>
+  renamePath(oldPath: string, newPath: string): Promise<FileOperationResult>
+
+  // ZIP 操作（Wave 3）
+  listZipContents(zipPath: string): Promise<FileItem[]>
+  extractFileFromZip(zipPath: string, filePath: string): Promise<string>
+  extractFileFromZipToTemp(zipPath: string, filePath: string): Promise<string>
+  getZipFileInfo(zipPath: string, filePath: string): Promise<FileItem>
+
+  // 系统操作
+  openPath(path: string): Promise<void>
+  getFileServerURL(): Promise<string>
+  getPreviewToken(): string
+  resolveShortcut(lnkPath: string): Promise<any>
+  detectFileTypeByContent(path: string): Promise<DetectTypeResult>
+  getCommonPaths(): Promise<Record<string, string>>
+
+  // 回收站（Wave 3）
+  getRecycleBinEntries(): Promise<any[]>
+  restoreFromRecycleBin(path: string): Promise<void>
+  deletePermanently(path: string): Promise<void>
+  emptyRecycleBin(): Promise<void>
+}
--- a/web/src/api/types.ts
+++ b/web/src/api/types.ts
@@ -2,75 +2,6 @@
 * API 类型定义
 */

-// 连接
-export interface Connection {
-  id: number
-  name: string
-  dbType: string
-  host: string
-  port: number
-  username: string
-  database?: string
-  createdAt?: string
-}
-
-// 数据库和表
-export interface Database {
-  name: string
-  tableCount?: number
-}
-
-export interface Table {
-  name: string
-  type?: string
-}
-
-// 表结构
-export interface Column {
-  Field: string
-  Type: string
-  Null: string
-  Key: string
-  Default: string | null
-  Comment: string
-  Extra?: string
-}
-
-export interface Index {
-  Key_name: string
-  Column_name: string
-  Non_unique: number
-  Seq_in_index: number
-  Index_type: string
-}
-
-export interface Structure {
-  database: string
-  table: string
-  type: 'mysql' | 'mongo' | 'redis'
-  columns?: Column[]
-  indexes?: Index[]
-  structure?: any
-  info?: any
-}
-
-// SQL 查询
-export interface QueryResult {
-  columns: string[]
-  data: any[]
-  rowsAffected: number
-  executionTime: number
-}
-
-// 标签页
-export interface Tab {
-  id?: number
-  title: string
-  content: string
-  connectionId?: number | null
-  order?: number
-}
-
 // 系统信息
 export interface SystemInfo {
  os: string
--- a/web/src/api/wails-transport.ts
+++ b/web/src/api/wails-transport.ts
@@ -0,0 +1,139 @@
+/**
+ * Wails Transport — 本地文件操作（通过 Wails IPC）
+ */
+
+import type { FsTransport, FileItem, FileOperationResult, DetectTypeResult } from './transport'
+
+function transformFile(file: any): FileItem {
+  return { ...file, is_dir: file.is_dir, mod_time: file.mod_time }
+}
+
+function transformFileList(files: any[]): FileItem[] {
+  return files.map(transformFile)
+}
+
+export class WailsTransport implements FsTransport {
+  private checkAvailable(method: string) {
+    if (!window.go?.main?.App?.[method]) {
+      throw new Error(`${method} API 不可用`)
+    }
+  }
+
+  async listDir(path: string): Promise<FileItem[]> {
+    this.checkAvailable('ListDir')
+    return transformFileList(await window.go.main.App.ListDir(path))
+  }
+
+  async getFileInfo(path: string): Promise<Record<string, any>> {
+    this.checkAvailable('GetFileInfo')
+    return window.go.main.App.GetFileInfo(path)
+  }
+
+  async readFile(path: string): Promise<string> {
+    this.checkAvailable('ReadFile')
+    return window.go.main.App.ReadFile(path)
+  }
+
+  async writeFile(path: string, content: string): Promise<void> {
+    this.checkAvailable('WriteFile')
+    await window.go.main.App.WriteFile({ path: String(path), content: String(content) })
+  }
+
+  async saveBase64File(path: string, content: string): Promise<void> {
+    this.checkAvailable('SaveBase64File')
+    if (!content) throw new Error('无效的 base64 内容')
+    await window.go.main.App.SaveBase64File({ path: String(path), content })
+  }
+
+  async createFile(dirPath: string, filename: string): Promise<FileOperationResult> {
+    this.checkAvailable('CreateFile')
+    const fullPath = dirPath.replace(/\/$/, '') + '/' + filename
+    return window.go.main.App.CreateFile(fullPath)
+  }
+
+  async createDir(parentPath: string, dirname: string): Promise<FileOperationResult> {
+    this.checkAvailable('CreateDir')
+    const fullPath = parentPath.replace(/\/$/, '') + '/' + dirname
+    return window.go.main.App.CreateDir(fullPath)
+  }
+
+  async deletePath(path: string): Promise<FileOperationResult> {
+    this.checkAvailable('DeletePath')
+    return window.go.main.App.DeletePath(path)
+  }
+
+  async renamePath(oldPath: string, newPath: string): Promise<FileOperationResult> {
+    this.checkAvailable('RenamePath')
+    return window.go.main.App.RenamePath({ oldPath: String(oldPath), newPath: String(newPath) })
+  }
+
+  async listZipContents(zipPath: string): Promise<FileItem[]> {
+    this.checkAvailable('ListZipContents')
+    return transformFileList(await window.go.main.App.ListZipContents(zipPath))
+  }
+
+  async extractFileFromZip(zipPath: string, filePath: string): Promise<string> {
+    this.checkAvailable('ExtractFileFromZip')
+    return window.go.main.App.ExtractFileFromZip(zipPath, filePath)
+  }
+
+  async extractFileFromZipToTemp(zipPath: string, filePath: string): Promise<string> {
+    this.checkAvailable('ExtractFileFromZipToTemp')
+    return window.go.main.App.ExtractFileFromZipToTemp(zipPath, filePath)
+  }
+
+  async getZipFileInfo(zipPath: string, filePath: string): Promise<FileItem> {
+    this.checkAvailable('GetZipFileInfo')
+    return transformFile(await window.go.main.App.GetZipFileInfo(zipPath, filePath))
+  }
+
+  async openPath(path: string): Promise<void> {
+    this.checkAvailable('OpenPath')
+    await window.go.main.App.OpenPath(path)
+  }
+
+  async getFileServerURL(): Promise<string> {
+    this.checkAvailable('GetFileServerURL')
+    return window.go.main.App.GetFileServerURL()
+  }
+
+  getPreviewToken(): string {
+    return '' // 本地模式无需 token
+  }
+
+  async resolveShortcut(lnkPath: string): Promise<any> {
+    this.checkAvailable('ResolveShortcut')
+    return window.go.main.App.ResolveShortcut(lnkPath)
+  }
+
+  async detectFileTypeByContent(path: string): Promise<DetectTypeResult> {
+    this.checkAvailable('DetectFileTypeByContent')
+    const result = await window.go.main.App.DetectFileTypeByContent(path)
+    return result as unknown as DetectTypeResult
+  }
+
+  async getCommonPaths(): Promise<Record<string, string>> {
+    this.checkAvailable('GetCommonPaths')
+    return window.go.main.App.GetCommonPaths()
+  }
+
+  async getRecycleBinEntries(): Promise<any[]> {
+    this.checkAvailable('GetRecycleBinEntries')
+    return window.go.main.App.GetRecycleBinEntries()
+  }
+
+  async restoreFromRecycleBin(path: string): Promise<void> {
+    this.checkAvailable('RestoreFromRecycleBin')
+    await window.go.main.App.RestoreFromRecycleBin(path)
+  }
+
+  async deletePermanently(path: string): Promise<void> {
+    this.checkAvailable('DeletePermanently')
+    await window.go.main.App.DeletePermanently(path)
+  }
+
+  async emptyRecycleBin(): Promise<void> {
+    this.checkAvailable('EmptyRecycleBin')
+    await window.go.main.App.EmptyRecycleBin()
+  }
+}
--- a/web/src/components/CodeEditor.vue
+++ b/web/src/components/CodeEditor.vue
@@ -3,34 +3,25 @@
 </template>

 <script setup>
-import { ref, onMounted, watch, onBeforeUnmount, computed, nextTick } from 'vue'
+import { ref, onMounted, watch, onBeforeUnmount, nextTick } from 'vue'
 import {
  EditorView, lineNumbers, highlightActiveLineGutter, keymap,
  EditorState, Compartment,
  defaultKeymap, history,
  bracketMatching, defaultHighlightStyle, syntaxHighlighting,
-  oneDark
+  oneDark,
+  openSearchPanel, search
 } from '@/utils/codemirrorExports'
 import { useThemeStore } from '@/stores/theme'
 import { loadLanguageExtension, getLanguageFromExtension } from '@/utils/codeMirrorLoader'

-// ==================== 主题定义 ====================
-
-// 亮色主题的基础样式
-const lightTheme = EditorView.theme({
-  '&': { backgroundColor: '#ffffff' },
-  '.cm-gutters': { backgroundColor: '#f7f7f7', color: '#999', border: 'none' },
-  '.cm-activeLineGutter': { backgroundColor: '#e8e8e8', color: '#333' },
-  '.cm-line': { caretColor: '#000' },
-  '.cm-selection': { backgroundColor: '#d9d9d9' },
-  '.cm-cursor': { borderLeftColor: '#000' }
-})
-
 // ==================== Props & Emits ====================

 const props = defineProps({
  modelValue: { type: String, required: true },
-  fileExtension: { type: String, default: '' }
+  fileExtension: { type: String, default: '' },
+  filePath: { type: String, default: '' },
+  fileMtime: { type: String, default: '' }
 })

 const emit = defineEmits(['update:modelValue'])
@@ -41,6 +32,36 @@ const themeStore = useThemeStore()
 const editorContainer = ref(null)
 let view = null

+// 滚动位置缓存：LRU 最多 5 份，每份 3 分钟过期
+const MAX_SCROLL_CACHE = 5
+const SCROLL_CACHE_TTL = 3 * 60 * 1000 // 3 分钟
+const fileScrollPositions = new Map() // filePath → { scrollTop, anchor, timestamp }
+let currentFilePath = ''
+let saveScrollTimer = null
+
+// 清理过期缓存 + LRU 淘汰，保持最多 MAX_SCROLL_CACHE 条
+const cleanScrollCache = () => {
+  const now = Date.now()
+  // 清理过期的
+  for (const [key, val] of fileScrollPositions) {
+    if (now - val.timestamp > SCROLL_CACHE_TTL) {
+      fileScrollPositions.delete(key)
+    }
+  }
+  // LRU：超出上限时删除最旧的
+  if (fileScrollPositions.size > MAX_SCROLL_CACHE) {
+    let oldestKey = null
+    let oldestTime = Infinity
+    for (const [key, val] of fileScrollPositions) {
+      if (val.timestamp < oldestTime) {
+        oldestTime = val.timestamp
+        oldestKey = key
+      }
+    }
+    if (oldestKey) fileScrollPositions.delete(oldestKey)
+  }
+}
+
 // 使用 Compartment 实现动态切换，避免重建编辑器
 const themeCompartment = new Compartment()
 const languageCompartment = new Compartment()
@@ -87,6 +108,9 @@ const createExtensions = () => {
    keymap.of(defaultKeymap),
    bracketMatching(),

+    // 查找替换（Ctrl+F / Ctrl+H）
+    search(),
+
    // 内容更新监听（带防抖）
    EditorView.updateListener.of((update) => {
      if (update.docChanged) {
@@ -98,7 +122,7 @@ const createExtensions = () => {
    EditorView.theme({
      '&': { height: '100%', fontSize: '13px' },
      '.cm-scroller': { overflow: 'auto', fontFamily: 'Consolas, Monaco, Courier New, monospace' },
-      '.cm-content': { padding: '8px', minHeight: '100%' },
+      '.cm-content': { padding: '8px' },
      '.cm-line': { padding: '0 0' },
      '&.cm-focused': { outline: 'none' }
    }),
@@ -143,6 +167,12 @@ const createEditor = (docContent = '') => {

  view = new EditorView({ state, parent: editorContainer.value })

+  // 滚动时防抖保存位置
+  view.scrollDOM.addEventListener('scroll', () => {
+    if (saveScrollTimer) clearTimeout(saveScrollTimer)
+    saveScrollTimer = setTimeout(saveScrollPosition, 200)
+  }, { passive: true })
+
  // 初始化语言
  initLanguage()
 }
@@ -163,8 +193,10 @@ onMounted(() => {
 })

 onBeforeUnmount(() => {
-  if (emitTimeout) {
-    clearTimeout(emitTimeout)
+  if (emitTimeout) clearTimeout(emitTimeout)
+  if (saveScrollTimer) clearTimeout(saveScrollTimer)
+  if (view?.scrollDOM) {
+    view.scrollDOM.removeEventListener('scroll', saveScrollPosition)
  }
  view?.destroy()
  view = null
@@ -172,12 +204,64 @@ onBeforeUnmount(() => {

 // ==================== 监听器 ====================

-// 监听外部内容变化
-watch(() => props.modelValue, (newValue) => {
-  if (view && newValue !== view.state.doc.toString()) {
-    view.dispatch({
-      changes: { from: 0, to: view.state.doc.length, insert: newValue || '' }
+// 保存当前文件滚动位置（防抖）
+const saveScrollPosition = () => {
+  if (!view || !currentFilePath) return
+  const scroller = view.scrollDOM
+  if (!scroller) return
+  fileScrollPositions.set(currentFilePath, {
+    scrollTop: scroller.scrollTop,
+    anchor: view.state.selection.main.anchor,
+    timestamp: Date.now()
  })
+  cleanScrollCache()
+}
+
+// 监听外部内容变化（切换文件/文件变更时触发）
+watch([() => props.modelValue, () => props.fileMtime], ([newValue, newMtime], [oldValue, oldMtime]) => {
+  // 文件修改时间变了 → 说明磁盘内容有变更 → 强制刷新
+  const mtimeChanged = newMtime && oldMtime && newMtime !== oldMtime
+  if (view && (mtimeChanged || newValue !== view.state.doc.toString())) {
+    // 先保存旧文件的滚动位置
+    saveScrollPosition()
+
+    const newPath = props.filePath || ''
+    const isSameFile = currentFilePath && currentFilePath === newPath
+
+    view.dispatch({
+      changes: { from: 0, to: view.state.doc.length, insert: newValue || '' },
+      selection: { anchor: 0 }
+    })
+
+    currentFilePath = newPath
+
+    if (isSameFile && fileScrollPositions.has(newPath)) {
+      // 同一文件 → 检查是否过期，未过期则恢复位置
+      const saved = fileScrollPositions.get(newPath)
+      if (saved && Date.now() - saved.timestamp <= SCROLL_CACHE_TTL) {
+        nextTick(() => {
+          if (view) {
+            view.dispatch({
+              selection: { anchor: saved.anchor },
+              effects: EditorView.scrollIntoView(saved.anchor)
+            })
+            view.scrollDOM.scrollTop = saved.scrollTop
+          }
+        })
+      } else {
+        // 过期了 → 强制滚动到顶部
+        nextTick(() => {
+          if (view) view.scrollDOM.scrollTop = 0
+        })
+      }
+    } else {
+      // 不同文件 → 强制滚动到顶部（scrollIntoView 不一定重置 DOM scrollTop）
+      nextTick(() => {
+        if (view) {
+          view.scrollDOM.scrollTop = 0
+        }
+      })
+    }
  }
 })

@@ -214,6 +298,6 @@ watch(() => props.fileExtension, () => {
 }

 .codemirror-editor :deep(.cm-content) {
-  height: 100%;
+  /* 不设 height，让 CodeMirror 虚拟滚动自行计算文档高度 */
 }
 </style>
--- a/web/src/components/FileSystem/components/ConnectionDialog.vue
+++ b/web/src/components/FileSystem/components/ConnectionDialog.vue
@@ -0,0 +1,77 @@
+<template>
+  <a-modal :visible="props.visible" :title="editingId ? '编辑连接' : '添加服务器'" unmount-on-close @cancel="emit('update:visible', false)" @before-ok="handleOk" :ok-loading="submitting">
+    <div style="display: flex; flex-direction: column; gap: 16px; max-width: 400px">
+      <div>
+        <div style="margin-bottom: 4px; font-size: 14px">名称</div>
+        <a-input v-model="form.name" placeholder="如：生产服务器" />
+      </div>
+      <div>
+        <div style="margin-bottom: 4px; font-size: 14px">地址</div>
+        <a-input v-model="form.host" placeholder="192.168.1.100" />
+      </div>
+      <div>
+        <div style="margin-bottom: 4px; font-size: 14px">端口</div>
+        <a-input-number v-model="form.port" :min="1" :max="65535" placeholder="9876" style="width: 100%" />
+      </div>
+      <div>
+        <div style="margin-bottom: 4px; font-size: 14px">
+          Token <span style="color: var(--color-text-3); font-size: 12px">API 认证令牌（与服务器配置一致）</span>
+        </div>
+        <a-input v-model="form.token" type="password" placeholder="留空则不认证" allow-clear />
+      </div>
+    </div>
+  </a-modal>
+</template>
+
+<script setup lang="ts">
+import { reactive, ref, watch } from 'vue'
+import { Message } from '@arco-design/web-vue'
+import { connectionManager } from '@/api/connection-manager'
+
+const props = defineProps<{ visible: boolean }>()
+const emit = defineEmits<{ (e: 'update:visible', val: boolean): void; (e: 'close'): void }>()
+
+const editingId = ref<string | null>(null)
+const submitting = ref(false)
+
+const form = reactive({
+  name: '',
+  host: '',
+  port: 9876,
+  token: '',
+})
+
+watch(() => props.visible, (val) => {
+  if (!val) return
+  editingId.value = null
+  Object.assign(form, { name: '', host: '', port: 9876, token: '' })
+})
+
+async function handleOk(): Promise<boolean> {
+  if (!form.name?.trim()) { Message.warning('请输入名称'); return false }
+  if (!form.host?.trim()) { Message.warning('请输入地址'); return false }
+
+  submitting.value = true
+  try {
+    if (editingId.value) {
+      connectionManager.updateProfile(editingId.value, { ...form })
+      Message.success('已更新')
+    } else {
+      connectionManager.addProfile({ ...form, type: 'remote' })
+      Message.success('已添加')
+    }
+    return true
+  } finally {
+    submitting.value = false
+  }
+}
+
+function editProfile(id: string) {
+  const profile = connectionManager.profiles.find(p => p.id === id)
+  if (!profile) return
+  editingId.value = id
+  Object.assign(form, { name: profile.name, host: profile.host, port: profile.port, token: profile.token || '' })
+}
+
+defineExpose({ editProfile })
+</script>
--- a/web/src/components/FileSystem/components/ConnectionIndicator.vue
+++ b/web/src/components/FileSystem/components/ConnectionIndicator.vue
@@ -0,0 +1,270 @@
+<template>
+  <!-- 无远程配置：极简入口按钮 -->
+  <div v-if="!hasRemote" class="connection-indicator mini" @click="$emit('add')">
+    <icon-cloud />
+  </div>
+
+  <!-- 有远程配置：完整标签 + 下拉菜单 -->
+  <div v-else class="connection-indicator" @click.stop="showMenu = !showMenu">
+    <span :class="['dot', state]" />
+    <span class="label">{{ label }}</span>
+
+    <div v-if="showMenu" class="menu" @click.stop>
+      <div class="menu-header">远程连接</div>
+      <div
+        v-for="p in profiles"
+        :key="p.id"
+        :class="['menu-item', { active: p.id === activeId }]"
+        @click="handleSelect(p)"
+      >
+        <span :class="['dot', p.type === 'remote' ? 'remote' : 'local']"></span>
+        <span class="menu-name">{{ p.name }}</span>
+        <span
+          v-if="p.type === 'remote'"
+          class="more-btn"
+          title="更多操作"
+          @click.stop="toggleMore(p)"
+        >···</span>
+        <!-- 更多操作子菜单 -->
+        <div v-if="moreOpenId === p.id" class="more-menu" @click.stop>
+          <div class="more-item" @click="handleEdit(p)">编辑</div>
+          <div class="more-item danger" @click="handleDelete(p)">删除</div>
+        </div>
+      </div>
+      <div class="menu-divider" />
+      <button class="menu-item add-btn" @click="$emit('add')">
+        + 添加服务器
+      </button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted, onUnmounted } from 'vue'
+import { IconCloud } from '@arco-design/web-vue/es/icon'
+import { connectionManager } from '@/api/connection-manager'
+
+const emit = defineEmits<{ (e: 'add'): void; (e: 'select', id: string): void; (e: 'edit', id: string): void }>()
+
+const showMenu = ref(false)
+const moreOpenId = ref<string | null>(null)
+const profiles = shallowRef(connectionManager.profiles)
+const activeId = shallowRef(connectionManager.activeProfile?.id ?? '')
+
+// 是否有远程 profile（决定显示模式）
+const hasRemote = computed(() => profiles.value.some(p => p.type === 'remote'))
+
+// 防抖：避免 connecting→connected 快速切换导致闪烁
+const displayState = ref(connectionManager.state)
+let _stateTimer: ReturnType<typeof setTimeout> | null = null
+
+const state = computed(() => displayState.value)
+const label = computed(() => {
+  const p = profiles.value.find(p => p.id === activeId.value)
+  if (!p || p.type === 'local') return '本地'
+  return p.name
+})
+
+// 监听连接变化，主动触发更新（带防抖）
+connectionManager.onStateChange((newState) => {
+  profiles.value = connectionManager.profiles
+  activeId.value = connectionManager.activeProfile?.id ?? ''
+  if (_stateTimer) clearTimeout(_stateTimer)
+  if (newState === 'connecting') {
+    _stateTimer = setTimeout(() => { displayState.value = newState }, 300)
+  } else {
+    displayState.value = newState
+  }
+})
+
+// 点击外部关闭菜单
+function handleClickOutside(e: MouseEvent) {
+  const el = e.target as HTMLElement
+  if (!el.closest('.connection-indicator')) {
+    showMenu.value = false
+    moreOpenId.value = null
+  }
+}
+onMounted(() => document.addEventListener('click', handleClickOutside))
+onUnmounted(() => document.removeEventListener('click', handleClickOutside))
+
+function handleSelect(p: { id: string }) {
+  connectionManager.connect(p.id)
+  showMenu.value = false
+  emit('select', p.id)
+}
+
+function toggleMore(p: { id: string }) {
+  moreOpenId.value = moreOpenId.value === p.id ? null : p.id
+}
+
+function handleEdit(p: { id: string }) {
+  moreOpenId.value = null
+  showMenu.value = false
+  emit('edit', p.id)
+}
+
+function handleDelete(p: { id: string; name: string }) {
+  connectionManager.removeProfile(p.id)
+  moreOpenId.value = null
+}
+</script>
+
+<style scoped>
+.connection-indicator {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  padding: 2px 10px;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 12px;
+  color: var(--color-text-2);
+  transition: background 0.15s, border-color 0.15s;
+  border: 1px solid transparent;
+  white-space: nowrap;
+  flex-shrink: 0;
+}
+
+.connection-indicator:hover {
+  background: var(--color-fill-2);
+  border-color: var(--color-border-2);
+}
+
+/* 极简模式：仅图标 */
+.connection-indicator.mini {
+  padding: 3px 6px;
+  border: none;
+  gap: 0;
+}
+.connection-indicator.mini:hover {
+  background: var(--color-fill-2);
+  border-color: transparent;
+}
+.connection-indicator.mini :deep(.arco-icon) {
+  font-size: 14px;
+  color: var(--color-text-3);
+}
+
+.dot {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.dot.connected { background: rgb(var(--green-6)); }
+.dot.connecting { background: #f5a623; animation: pulse 1.5s infinite; }
+.dot.disconnected { background: var(--color-danger-6); }
+.dot.error { background: var(--color-danger-6); }
+.dot.local { background: var(--color-text-3); }
+.dot.remote { background: #165dff; }
+
+.label {
+  max-width: 70px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.menu {
+  position: absolute;
+  top: calc(100% + 4px);
+  left: 0;
+  min-width: 180px;
+  background: var(--color-bg-popup);
+  border: 1px solid var(--color-border);
+  border-radius: 6px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
+  z-index: 1000;
+  padding: 4px 0;
+}
+
+.menu-header {
+  padding: 8px 12px;
+  font-size: 12px;
+  color: var(--color-text-3);
+  border-bottom: 1px solid var(--color-fill-1);
+}
+
+.menu-item {
+  position: relative;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 12px;
+  cursor: pointer;
+  font-size: 13px;
+  transition: background 0.15s;
+}
+.menu-item:hover { background: var(--color-fill-1); }
+.menu-item.active { background: var(--color-primary-light-1); color: var(--color-primary-6); }
+
+.menu-name {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  flex: 1;
+}
+
+.more-btn {
+  margin-left: auto;
+  opacity: 0;
+  font-size: 14px;
+  color: var(--color-text-3);
+  cursor: pointer;
+  padding: 0 4px;
+  line-height: 1;
+  letter-spacing: 1px;
+  transition: opacity 0.15s;
+  user-select: none;
+}
+.menu-item:hover .more-btn { opacity: 1; }
+
+/* 更多操作子菜单 */
+.more-menu {
+  position: absolute;
+  right: 0;
+  top: 0;
+  transform: translateX(100%);
+  min-width: 90px;
+  background: var(--color-bg-popup);
+  border: 1px solid var(--color-border);
+  border-radius: 4px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+  z-index: 10;
+  padding: 2px 0;
+}
+
+.more-item {
+  padding: 6px 14px;
+  font-size: 13px;
+  cursor: pointer;
+  transition: background 0.15s;
+}
+.more-item:hover { background: var(--color-fill-1); }
+.more-item.danger { color: var(--color-danger-6); }
+
+.menu-divider {
+  height: 1px;
+  background: var(--color-fill-1);
+  margin: 4px 8px;
+}
+
+.add-btn {
+  width: 100%;
+  border: none;
+  background: transparent;
+  text-align: left;
+  color: var(--color-primary-6);
+  font-size: 13px;
+  padding: 8px 12px;
+}
+.add-btn:hover { background: var(--color-primary-light-1); }
+
+@keyframes pulse {
+  0%, 100% { opacity: 1; }
+  50% { opacity: 0.4; }
+}
+</style>
--- a/web/src/components/FileSystem/components/FileEditorPanel.vue
+++ b/web/src/components/FileSystem/components/FileEditorPanel.vue
@@ -1,5 +1,7 @@
 <template>
  <div ref="panelRef" class="file-editor-panel" :style="{ width: width + '%' }">
+    <!-- 有选中文件时显示表头和内容 -->
+    <template v-if="config.currentFileName">
    <div class="panel-header">
      <span class="panel-title">
        <template v-if="config.isImageView">🖼️ 图片预览</template>
@@ -72,7 +74,8 @@

      <!-- 视频预览 -->
      <div v-else-if="config.isVideoView" class="media-preview">
-        <video :src="config.previewUrl" controls class="preview-video"></video>
+        <video :src="config.previewUrl" controls class="preview-video" @error="handleMediaError('视频')"></video>
+        <div v-if="mediaErrorMsg" class="media-error">{{ mediaErrorMsg }}</div>
        <div class="media-meta">
          <a-tag color="arcoblue">🎬 视频</a-tag>
        </div>
@@ -80,7 +83,8 @@

      <!-- 音频预览 -->
      <div v-else-if="config.isAudioView" class="media-preview">
-        <audio :src="config.previewUrl" controls class="preview-audio"></audio>
+        <audio :src="config.previewUrl" controls class="preview-audio" @error="handleMediaError('音频')"></audio>
+        <div v-if="mediaErrorMsg" class="media-error">{{ mediaErrorMsg }}</div>
        <div class="media-meta">
          <a-tag color="green">🎵 音频</a-tag>
        </div>
@@ -88,7 +92,8 @@

      <!-- PDF 预览 -->
      <div v-else-if="config.isPdfFile" class="media-preview media-preview-pdf">
-        <iframe :src="config.previewUrl" class="preview-pdf"></iframe>
+        <iframe :src="config.previewUrl" class="preview-pdf" @load="handlePdfLoad"></iframe>
+        <div v-if="mediaErrorMsg" class="media-error">{{ mediaErrorMsg }}</div>
        <div class="media-meta">
          <a-tag color="orangered">📕 PDF</a-tag>
        </div>
@@ -155,6 +160,8 @@
          <AsyncCodeEditor
            :model-value="config.fileContent"
            :file-extension="config.currentFileExtension"
+            :file-path="config.currentFileFullPath"
+            :file-mtime="config.fileMtime"
            @update:model-value="handleContentUpdate"
            class="code-editor"
          />
@@ -218,6 +225,8 @@
          <AsyncCodeEditor
            :model-value="config.fileContent"
            :file-extension="config.currentFileExtension"
+            :file-path="config.currentFileFullPath"
+            :file-mtime="config.fileMtime"
            @update:model-value="handleContentUpdate"
            class="code-editor"
          />
@@ -284,6 +293,8 @@
          <AsyncCodeEditor
            :model-value="config.fileContent"
            :file-extension="config.currentFileExtension"
+            :file-path="config.currentFileFullPath"
+            :file-mtime="config.fileMtime"
            @update:model-value="handleContentUpdate"
            class="code-editor"
          />
@@ -337,6 +348,8 @@
        <AsyncCodeEditor
          :model-value="config.fileContent"
          :file-extension="config.currentFileExtension"
+          :file-path="config.currentFileFullPath"
+          :file-mtime="config.fileMtime"
          @update:model-value="handleContentUpdate"
          class="code-editor"
        />
@@ -346,6 +359,7 @@
        </div>
      </div>
    </div>
+    </template>
  </div>
 </template>

@@ -359,6 +373,7 @@ import type { FileEditorPanelConfig } from '@/types/file-system'
 import { renderMermaidDiagrams, rerenderMermaidDiagrams } from '@/utils/markedExtensions'
 import { useThemeStore } from '@/stores/theme'
 import { previewExcel, previewWord, previewCsv } from '@/utils/filePreviewHandlers'
+import { connectionManager } from '@/api/connection-manager'

 // 异步加载 CodeEditor 组件，减少初始包大小
 const AsyncCodeEditor = defineAsyncComponent({
@@ -424,13 +439,27 @@ interface Emits {

 const emit = defineEmits<Emits>()

-// HTML 预览 URL（使用后端接口）
+// HTML 预览 URL（实时从 connectionManager 读取，不缓存）
+function resolveHtmlPreviewBase(): string {
+  if (!connectionManager.isRemote()) return 'http://localhost:8073'
+  const base = connectionManager.getFileServerBaseURL()
+  if (!base) return 'http://localhost:8073'
+  // 远程模式需要完整代理路径前缀 /api/v1/proxy/localfs（htmlPreviewUrl 会替换为 html-preview）
+  return base.replace(/\/$/, '') + '/api/v1/proxy/localfs'
+}
+
 const htmlPreviewUrl = computed(() => {
-  if (!props.config.currentFileFullPath || !props.config.isHtmlFile) {
-    return ''
-  }
+  if (!props.config.currentFileFullPath || !props.config.isHtmlFile) return ''
  const encodedPath = encodeURIComponent(props.config.currentFileFullPath)
-  return `http://localhost:18765/localfs/html-preview?path=${encodedPath}`
+  const isRemote = connectionManager.isRemote()
+  const base = resolveHtmlPreviewBase()
+  if (isRemote) {
+    // 远程模式：走 /api/v1/proxy/html-preview 路由
+    const baseUrl = base.replace(/\/proxy\/localfs\/?$/, '')
+    return `${baseUrl}/proxy/html-preview?path=${encodedPath}`
+  }
+  // 本地模式：直连文件服务器
+  return `${base}/localfs/html-preview?path=${encodedPath}`
 })

 // 计算属性：判断文件是否在当前目录
@@ -490,6 +519,30 @@ const handleImageError = () => {
  emit('imageError')
 }

+const mediaErrorMsg = ref('')
+const handleMediaError = (type: string) => {
+  mediaErrorMsg.value = `${type}文件加载失败，请检查网络连接或文件权限`
+}
+const handlePdfLoad = (event: Event) => {
+  const iframe = event.target as HTMLIFrameElement
+  try {
+    // iframe 加载后检查内容是否为空（401/404 等错误页面通常内容很少）
+    if (!iframe.contentDocument || iframe.contentDocument.body.innerHTML.length < 100) {
+      mediaErrorMsg.value = 'PDF 文件加载失败，请检查网络连接或文件权限'
+    }
+  } catch {
+    // 跨域时无法访问 contentDocument，忽略
+  }
+}
+
+// 带认证的 fetch（远程模式自动附加 Bearer token）
+const authFetch = async (url: string): Promise<Response> => {
+  const token = connectionManager.activeProfile?.token
+  const headers: Record<string, string> = {}
+  if (token) headers['Authorization'] = `Bearer ${token}`
+  return fetch(url, { headers })
+}
+
 // 打印窗口导出 PDF 公共函数
 const openPrintWindow = (title: string, bodyHtml: string, extraStyle = '') => {
  const printWindow = window.open('', '_blank')
@@ -642,7 +695,7 @@ const loadExcelPreview = async (filePath: string) => {

    // 直接从本地文件服务器获取（不走 base64）
    const fileUrl = props.config.previewUrl
-    const response = await fetch(fileUrl)
+    const response = await authFetch(fileUrl)
    const blob = await response.blob()
    const file = new File([blob], getFileName(filePath), { type: blob.type || 'application/vnd.ms-excel' })

@@ -671,7 +724,7 @@ const loadWordPreview = async (filePath: string) => {
    wordPreviewRef.value.innerHTML = '<div class="loading-hint">加载中...</div>'

    const fileUrl = props.config.previewUrl
-    const response = await fetch(fileUrl)
+    const response = await authFetch(fileUrl)
    const blob = await response.blob()
    const file = new File([blob], getFileName(filePath), { type: blob.type || 'application/vnd.ms-word' })

@@ -701,7 +754,7 @@ const loadCsvPreview = async (filePath: string) => {

    const blob = props.config.fileContent && !props.config.isBinaryFile
      ? new Blob([props.config.fileContent], { type: 'text/csv' })
-      : await (await fetch(props.config.previewUrl)).blob()
+      : await (await authFetch(props.config.previewUrl)).blob()
    const file = new File([blob], getFileName(filePath), { type: 'text/csv' })

    const result = await previewCsv(file, csvPreviewRef.value)
@@ -775,11 +828,11 @@ watch([markdownPreviewRef, () => props.config.isEditMode], ([refVal, isEditMode]
 // 处理 HTML iframe 发送的消息（链接点击）
 const handleHtmlIframeMessage = (event: MessageEvent) => {
  // 安全检查：接受来自本地文件服务器或同源的消息
-  // Wails 应用的 origin 可能是 wails://...，而 iframe 来自 http://localhost:18765
+  // Wails 应用的 origin 可能是 wails://...，而 iframe 来自 http://localhost:8073
  const allowedOrigins = [
    window.location.origin,
-    'null',           // about:blank 或 data: URL
-    'http://localhost:18765',  // 本地文件服务器
+    'null',
+    resolveHtmlPreviewBase(),  // 动态：本地 localhost:8073 或远程代理地址
  ]
  if (!allowedOrigins.includes(event.origin)) {
    return
@@ -827,11 +880,9 @@ onUnmounted(() => {
  display: flex;
  align-items: center;
  justify-content: space-between;
-  padding: 8px 12px;
-  background: var(--color-fill-1);
+  padding: 3px 12px;
+  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
-  font-size: 13px;
-  font-weight: 500;
  flex-shrink: 0;
  gap: 12px;
 }
@@ -936,6 +987,13 @@ onUnmounted(() => {
  transform: translate(-50%, -50%);
 }

+.media-error {
+  color: var(--color-danger-6);
+  font-size: 12px;
+  padding: 4px 0;
+  text-align: center;
+}
+
 .media-meta {
  display: flex;
  gap: 8px;
--- a/web/src/components/FileSystem/components/FileListPanel.vue
+++ b/web/src/components/FileSystem/components/FileListPanel.vue
@@ -3,8 +3,7 @@
    <div class="panel-header">
      <span class="panel-title">📋 文件列表</span>
      <div class="panel-header-right">
-        <span class="panel-count">{{ config.fileList.length }} 项</span>
-        <a-popover trigger="click" position="bottom" :content-style="{ padding: '4px', width: '150px' }">
+        <a-popover trigger="click" position="bottom" :content-style="{ padding: '4px', width: '170px' }">
          <a-button size="mini" type="text" class="settings-btn">
            <icon-more />
          </a-button>
@@ -31,6 +30,18 @@
                :disabled="col.key === 'name' && visibleCount <= 1"
                @change="(val: boolean) => toggleColumn(col.key, val)"
              >{{ col.label }}</a-checkbox>
+              <!-- 可排序列：点击图标排序 -->
+              <span
+                v-if="colSortMap[col.key]"
+                class="col-sort-icon"
+                :class="{ 'col-sort-active': sortBy === colSortMap[col.key] }"
+                :title="sortBy === colSortMap[col.key] ? (sortOrder === 'asc' ? '升序 → 点击降序' : '降序 → 点击升序') : `按${col.label}排序`"
+                @click.stop="emit('sort', colSortMap[col.key])"
+              >
+                <IconSort v-if="sortBy !== colSortMap[col.key]" />
+                <IconSortAscending v-else-if="sortOrder === 'asc'" />
+                <IconSortDescending v-else />
+              </span>
            </div>
          </template>
        </a-popover>
@@ -38,21 +49,20 @@
    </div>

    <div
-      class="file-list-wrapper"
+      class="file-list-wrapper thin-dark-scrollbar"
      @contextmenu.prevent="handleWrapperContextMenu"
    >
-      <!-- 文件列表（a-table） -->
+      <!-- 文件列表（滚动区域） -->
      <a-table
        v-if="config.fileList.length > 0 || config.fileLoading"
        :columns="tableColumns"
-        :data="config.fileList"
+        :data="pagedFileList"
        :loading="config.fileLoading"
        :pagination="false"
        :bordered="false"
        :show-header="showHeader"
        size="mini"
        :row-class-name="getRowClassName"
-        :scroll="{ y: 'auto' }"
        class="file-table"
        @row-click="handleRowClick"
        @row-contextmenu="handleRowContextMenu"
@@ -64,13 +74,27 @@
        <span>此文件夹为空</span>
      </div>
    </div>
+
+    <!-- 分页栏（固定在面板底部，不随内容滚动） -->
+    <div v-if="config.fileList.length > 0" class="pagination-bar">
+      <span class="pagination-total">共 {{ config.fileList.length }} 项</span>
+      <span class="pagination-nav">
+        <span class="page-btn" :class="{ disabled: currentPage <= 1 }" @click="onPageChange(currentPage - 1)">
+          <icon-left />
+        </span>
+        <span class="page-info">{{ currentPage }} / {{ totalPages }}</span>
+        <span class="page-btn" :class="{ disabled: currentPage >= totalPages }" @click="onPageChange(currentPage + 1)">
+          <icon-right />
+        </span>
+      </span>
+    </div>
  </div>
 </template>

 <script setup lang="ts">
-import { h, computed, nextTick, ref } from 'vue'
+import { h, computed, nextTick, ref, watch } from 'vue'
 import { Input, Button } from '@arco-design/web-vue'
-import { IconStar, IconStarFill, IconSort, IconSortAscending, IconSortDescending, IconMore } from '@arco-design/web-vue/es/icon'
+import { IconStar, IconStarFill, IconSort, IconSortAscending, IconSortDescending, IconMore, IconLeft, IconRight } from '@arco-design/web-vue/es/icon'
 import { formatBytes, formatFileTime, getFileIcon, getExt } from '@/utils/fileUtils'
 import { STORAGE_KEYS } from '@/utils/constants'
 import type { FileListPanelConfig, FileItem } from '@/types/file-system'
@@ -101,6 +125,14 @@ interface Emits {

 const emit = defineEmits<Emits>()

+// 列 key → 排序字段映射
+const colSortMap: Record<string, string> = {
+  icon: 'type',
+  name: 'name',
+  time: 'modified_time',
+  size: 'size'
+}
+
 // ========== 列配置（支持显隐 + 排序） ==========
 const COL_SETTINGS_KEY = STORAGE_KEYS.FILESYSTEM.COL_SETTINGS
 const SHOW_HEADER_KEY = STORAGE_KEYS.FILESYSTEM.SHOW_HEADER
@@ -139,7 +171,8 @@ function loadColSettings(): ColumnConfig[] {
 }

 const colSettings = ref<ColumnConfig[]>(loadColSettings())
-const showHeader = ref(localStorage.getItem(SHOW_HEADER_KEY) !== 'false')
+// 默认隐藏表头（localStorage 无值时默认不显示）
+const showHeader = ref(localStorage.getItem(SHOW_HEADER_KEY) === 'true')

 // 手动持久化（避免 deep watch 频繁写入）
 function saveColSettings() {
@@ -311,6 +344,26 @@ const tableColumns = computed(() => {
    .filter(Boolean)
 })

+// ========== 分页 ==========
+const currentPage = ref(1)
+const pageSize = 100
+
+const pagedFileList = computed(() => {
+  const list = props.config.fileList
+  const start = (currentPage.value - 1) * pageSize
+  return list.slice(start, start + pageSize)
+})
+
+const totalPages = computed(() => Math.max(1, Math.ceil(props.config.fileList.length / pageSize)))
+
+const onPageChange = (page: number) => {
+  if (page < 1 || page > totalPages.value) return
+  currentPage.value = page
+}
+
+// 当文件列表变化时重置到第1页
+watch(() => props.config.fileList.length, () => { currentPage.value = 1 })
+
 // ========== 行事件处理 ==========
 const handleRowClick = (record: FileItem, ev: Event) => {
  const target = ev.target as HTMLElement
@@ -351,12 +404,13 @@ defineExpose({ focusEditingItem })
 .file-list-panel {
  display: flex;
  flex-direction: column;
-  height: 100%;
+  flex: 1;           /* 父级是 flex 容器，用 flex:1 而非 height:100% */
+  min-height: 0;     /* 允许收缩到小于内容高度 */
  background: var(--color-bg-1);
 }

 .panel-header {
-  padding: 6px 12px;
+  padding: 3px 12px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-2);
  flex-shrink: 0;
@@ -382,15 +436,39 @@ defineExpose({ focusEditingItem })
  color: var(--color-text-2);
 }

-/* 滚动容器 */
+/* 列项排序图标 */
+.col-sort-icon {
+  margin-left: auto;
+  font-size: 12px;
+  color: var(--color-text-4);
+  cursor: pointer;
+  padding: 2px;
+  border-radius: 3px;
+  flex-shrink: 0;
+  transition: all 0.15s;
+}
+.col-sort-icon:hover {
+  background: var(--color-fill-2);
+  color: var(--color-text-2);
+}
+.col-sort-active {
+  color: rgb(var(--primary-6));
+}
+
+/* 滚动容器（table + 分页 的统一滚动层） */
 .file-list-wrapper {
  flex: 1;
+  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0 2px;
 }

-/* ====== Table 全局覆盖 ====== */
+/* ====== Table ====== */
+.file-table {
+  flex: 1;
+  min-height: 0;
+}
 .file-table :deep(.arco-table) {
  font-size: 13px;
  table-layout: fixed;
@@ -524,4 +602,35 @@ defineExpose({ focusEditingItem })
  gap: 8px;
 }
 .empty-state span:nth-child(2) { font-size: 14px; }
+
+/* 分页栏（固定底部） */
+.pagination-bar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 4px 10px;
+  background: var(--color-bg-2);
+  border-top: 1px solid var(--color-border);
+  flex-shrink: 0;
+}
+.pagination-total {
+  font-size: 12px;
+  color: var(--color-text-3);
+}
+.pagination-nav {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+}
+.page-btn {
+  cursor: pointer;
+  color: var(--color-text-2);
+  padding: 0 3px;
+  line-height: 1;
+  user-select: none;
+}
+.page-btn:hover:not(.disabled) { color: rgb(var(--primary-6)); }
+.page-btn.disabled { color: var(--color-text-4); cursor: default; }
+.page-info { color: var(--color-text-2); min-width: 28px; text-align: center; }
 </style>
--- a/web/src/components/FileSystem/components/PathBreadcrumb.vue
+++ b/web/src/components/FileSystem/components/PathBreadcrumb.vue
@@ -5,7 +5,7 @@
        <!-- 路径段 -->
        <div
          class="breadcrumb-segment"
-          :class="{ 'is-hoverable': index < segments.length - 1 }"
+          :class="{ 'is-hoverable': index < segments.length - 1 || segments.length === 1 }"
          @mouseenter="onHover(segment, index)"
          @mouseleave="onLeave"
          @click="onClick(segment)"
@@ -152,7 +152,8 @@ const resetAndClose = () => {
 }

 const onHover = (segment: PathSegment, index: number) => {
-  if (index === segments.value.length - 1) return
+  // 根目录（如 C:）只有一段，也允许悬停弹出子目录
+  if (index === segments.value.length - 1 && segments.value.length > 1) return

  if (hoverTimer.value) clearTimeout(hoverTimer.value)
  if (closeTimer.value) clearTimeout(closeTimer.value)
@@ -209,7 +210,7 @@ watch(() => props.path, () => {
 .breadcrumb-items {
  display: flex;
  align-items: center;
-  gap: 4px;
+  gap: 2px;
  flex-wrap: wrap;
 }

@@ -242,7 +243,7 @@ watch(() => props.path, () => {
  color: var(--color-text-3);
  font-size: 12px;
  flex-shrink: 0;
-  margin: 0 2px;
+  margin: 0 1px;
 }

 /* 弹出菜单 */
--- a/web/src/components/FileSystem/components/Sidebar.vue
+++ b/web/src/components/FileSystem/components/Sidebar.vue
@@ -1,11 +1,15 @@
 <template>
  <transition name="slide">
    <div v-show="config.visible" class="sidebar">
-      <div class="sidebar-header">
-        <span class="sidebar-title">⭐ 收藏夹</span>
-        <span class="sidebar-count">{{ config.favoriteFiles.length }}</span>
+      <!-- 收藏夹区块 -->
+      <div class="sidebar-section">
+        <div class="section-header" @click="favCollapsed = !favCollapsed">
+          <span class="section-title">⭐ 收藏夹</span>
+          <span class="section-count">共{{ config.favoriteFiles.length }}项</span>
+          <icon-down v-if="!favCollapsed" class="section-toggle" />
+          <icon-right v-else class="section-toggle" />
        </div>
-      <div class="sidebar-content">
+        <div class="section-content" :class="{ collapsed: favCollapsed }">
          <div
            v-for="(fav, index) in config.favoriteFiles"
            :key="fav.path"
@@ -17,7 +21,7 @@
              'sidebar-item-dragging': config.draggingState.isDragging && config.draggingState.draggedIndex === index,
              'sidebar-item-drag-over': config.draggingState.isDragging && config.draggingState.draggedIndex !== index
            }"
-          :draggable="config.draggingState.isDragging && config.draggingState.draggedIndex === index"
+            :draggable="config.draggingState.pressedIndex === index || config.draggingState.isDragging"
            @click="handleOpenFavorite(fav)"
            @mousedown="handleLongPressStart($event, index)"
            @mouseup="handleLongPressCancel"
@@ -61,11 +65,27 @@
          </div>
        </div>
      </div>
+
+      <!-- 帮助文档区块 -->
+      <div class="sidebar-section">
+        <div class="section-header" @click="helpCollapsed = !helpCollapsed">
+          <span class="section-title">📖 帮助</span>
+          <icon-down v-if="!helpCollapsed" class="section-toggle" />
+          <icon-right v-else class="section-toggle" />
+        </div>
+        <div class="section-content help-content" :class="{ collapsed: helpCollapsed }">
+          <div class="help-item" v-for="item in helpItems" :key="item.key">
+            <span class="help-key">{{ item.key }}</span>
+            <span class="help-desc">{{ item.desc }}</span>
+          </div>
+        </div>
+      </div>
+    </div>
  </transition>
 </template>

 <script setup lang="ts">
-import { computed } from 'vue'
+import { ref, computed } from 'vue'
 import type { SidebarConfig, FavoriteFile } from '@/types/file-system'

 // Props
@@ -75,6 +95,10 @@ interface Props {

 const props = defineProps<Props>()

+// 折叠状态（组件内部，不污染父组件）
+const favCollapsed = ref(false)
+const helpCollapsed = ref(true)
+
 // 计算第一个和最后一个置顶项的索引
 const pinnedIndices = computed(() => {
  return props.config.favoriteFiles
@@ -85,6 +109,15 @@ const pinnedIndices = computed(() => {
 const firstPinnedIndex = computed(() => pinnedIndices.value[0] ?? -1)
 const lastPinnedIndex = computed(() => pinnedIndices.value[pinnedIndices.value.length - 1] ?? -1)

+// 帮助内容
+const helpItems = [
+  { key: 'Ctrl+B', desc: '切换侧边栏' },
+  { key: 'Ctrl+H', desc: '历史记录' },
+  { key: 'Ctrl+F', desc: '聚焦搜索' },
+  { key: 'Click ⭐', desc: '收藏文件' },
+  { key: 'Drag', desc: '排序收藏' },
+]
+
 // Emits
 interface Emits {
  (e: 'openFavorite', file: FavoriteFile): void
@@ -101,7 +134,7 @@ interface Emits {
 const emit = defineEmits<Emits>()

 // 图标导入
-import { IconStar, IconClose, IconPushpin } from '@arco-design/web-vue/es/icon'
+import { IconStar, IconClose, IconPushpin, IconDown, IconRight } from '@arco-design/web-vue/es/icon'
 import { getFileIcon } from '@/utils/fileUtils'

 // 事件处理
@@ -151,37 +184,100 @@ const handleDragEnd = () => {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
+  overflow-y: auto;
 }

-.sidebar-header {
-  padding: 12px 16px;
-  border-bottom: 1px solid var(--color-border);
+/* 区块 */
+.sidebar-section {
  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  background: var(--color-bg-2);
+  flex-direction: column;
 }

-.sidebar-title {
-  font-size: 14px;
-  font-weight: 600;
+/* 区块头部 - 可点击折叠 */
+.section-header {
+  padding: 5px 12px;
+  background: var(--color-bg-2);
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  cursor: pointer;
+  user-select: none;
+  flex-shrink: 0;
+}
+
+.section-header:hover {
+  background: var(--color-fill-1);
+}
+
+.section-title {
+  font-size: 13px;
+  font-weight: 500;
  color: var(--color-text-1);
 }

-.sidebar-count {
+.section-count {
  font-size: 12px;
  color: var(--color-text-3);
-  background: var(--color-fill-2);
-  padding: 2px 8px;
-  border-radius: 10px;
 }

-.sidebar-content {
+.section-toggle {
+  font-size: 12px;
+  color: var(--color-text-3);
+  margin-left: auto;
+  transition: transform 0.2s;
+}
+
+/* 区块内容 - 可折叠 */
+.section-content {
+  overflow: hidden;
+  transition: max-height 0.25s ease, opacity 0.2s ease;
+  max-height: calc(100vh - 80px);
+  opacity: 1;
+}
+
+.section-content.collapsed {
+  max-height: 0;
+  opacity: 0;
+  padding-top: 0;
+  padding-bottom: 0;
+}
+
+/* 收藏夹内容 */
+.section-content:not(.help-content) {
  flex: 1;
-  overflow-y: auto;
-  padding: 8px;
+  min-height: 0;
+  padding: 4px 8px 0;
 }

+/* 帮助内容 */
+.help-content {
+  padding: 4px 12px;
+}
+
+.help-item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 4px 0;
+  font-size: 12px;
+}
+
+.help-key {
+  font-family: 'Consolas', 'Monaco', monospace;
+  background: var(--color-fill-2);
+  padding: 1px 6px;
+  border-radius: 3px;
+  color: var(--color-text-2);
+  white-space: nowrap;
+  min-width: 56px;
+  text-align: center;
+}
+
+.help-desc {
+  color: var(--color-text-3);
+}
+
+/* 收藏项 */
 .sidebar-item {
  display: flex;
  align-items: center;
@@ -257,6 +353,7 @@ const handleDragEnd = () => {
  opacity: 1;
 }

+/* 空状态 */
 .sidebar-empty {
  display: flex;
  flex-direction: column;
@@ -283,7 +380,7 @@ const handleDragEnd = () => {
  margin-top: 4px;
 }

-/* 滑动动画 */
+/* 侧边栏整体滑入滑出动画 */
 .slide-enter-active,
 .slide-leave-active {
  transition: all 0.3s ease;
--- a/web/src/components/FileSystem/components/Toolbar.vue
+++ b/web/src/components/FileSystem/components/Toolbar.vue
@@ -9,7 +9,7 @@
            📦 {{ config.zipFileName }}
          </a-tag>
          <template v-if="config.zipBreadcrumbs && config.zipBreadcrumbs.length > 0">
-            <icon-right class="breadcrumb-separator" />
+            <icon-right class="breadcrumb-sep" />
            <a-tag
              v-for="(crumb, index) in config.zipBreadcrumbs"
              :key="index"
@@ -25,13 +25,36 @@
            退出 ZIP
          </a-button>
        </div>
-        <!-- 正常模式：面包屑导航 -->
+        <!-- 正常模式：连接指示器 + 面包屑导航（融合布局） -->
        <div v-else class="path-breadcrumb-wrapper">
+          <!-- 连接指示器（紧凑标签样式，作为面包屑首段） -->
+          <ConnectionIndicator @add="showConnectionDialog = true" @select="onConnectionChanged" @edit="onEditProfile" />
+          <span class="breadcrumb-sep">›</span>
+          <!-- 路径面包屑 -->
          <PathBreadcrumb
            :path="config.filePath"
            @navigate="handleGoToPath"
            @openFile="handleOpenFile"
          />
+          <!-- 右侧操作：快捷路径 + 复制 -->
+          <div class="breadcrumb-right-actions">
+            <a-tooltip content="快捷路径" position="bottom">
+              <a-dropdown>
+                <a-button size="mini" type="text" class="shortcut-btn">
+                  <template #icon><icon-forward /></template>
+                </a-button>
+                <template #content>
+                  <a-doption
+                    v-for="shortcut in config.commonPaths"
+                    :key="shortcut.path"
+                    @click="handleGoToPath(shortcut.path)"
+                  >
+                    <template #icon>{{ (shortcut.name || '').split(' ')[0] }}</template>
+                    {{ (shortcut.name || '').substring(2) }}
+                  </a-doption>
+                </template>
+              </a-dropdown>
+            </a-tooltip>
            <a-tooltip :content="copied ? '已复制' : '复制路径'" position="top">
              <a-button
                size="mini"
@@ -47,47 +70,20 @@
          </div>
        </div>
      </div>
+    </div>

    <div class="toolbar-right">
-      <!-- 快捷路径下拉 -->
-      <a-dropdown v-if="!config.isBrowsingZip">
-        <a-button size="small">
-          <template #icon>
-            <icon-forward />
-          </template>
-          快捷访问
-        </a-button>
-        <template #content>
-          <a-doption
-            v-for="shortcut in config.commonPaths"
-            :key="shortcut.path"
-            @click="handleGoToPath(shortcut.path)"
-          >
-            <template #icon>{{ (shortcut.name || '').split(' ')[0] }}</template>
-            {{ (shortcut.name || '').substring(2) }}
-          </a-doption>
-        </template>
-      </a-dropdown>
-
-      <!-- 历史记录下拉 -->
-      <a-dropdown>
-        <a-button size="small">
-          <template #icon>
-            <icon-history />
-          </template>
-          历史
-        </a-button>
-        <template #content>
-          <a-doption
-            v-for="path in config.pathHistory.slice(0, 10)"
-            :key="path"
-            @click="handleGoToPath(path)"
-          >
-            {{ path }}
-          </a-doption>
-          <a-doption v-if="config.pathHistory.length === 0" disabled>暂无历史</a-doption>
-        </template>
-      </a-dropdown>
+      <!-- 搜索框 -->
+      <a-input-search
+        :model-value="config.searchKeyword"
+        placeholder="搜索文件..."
+        size="small"
+        class="toolbar-search"
+        allow-clear
+        @search="handleSearch"
+        @update:model-value="handleSearch"
+        @keyup.escape="handleClearSearch"
+      />

      <!-- 刷新按钮 -->
      <a-button
@@ -101,6 +97,29 @@
        刷新
      </a-button>

+      <!-- 历史记录下拉（仅图标，Ctrl+H） -->
+      <a-dropdown
+        v-model:popup-visible="historyPopupVisible"
+      >
+        <a-tooltip content="历史记录 (Ctrl+H)" position="left">
+          <a-button size="small">
+            <template #icon><icon-history /></template>
+          </a-button>
+        </a-tooltip>
+        <template #content>
+          <div class="history-dropdown-content">
+            <a-doption
+              v-for="path in config.pathHistory.slice(0, 10)"
+              :key="path"
+              @click="handleGoToPath(path)"
+            >
+              <span class="history-path-text">{{ path }}</span>
+            </a-doption>
+            <a-doption v-if="config.pathHistory.length === 0" disabled>暂无历史</a-doption>
+          </div>
+        </template>
+      </a-dropdown>
+
      <!-- 切换侧边栏 -->
      <a-button
        size="small"
@@ -113,13 +132,18 @@
      </a-button>
    </div>
  </div>
+
+  <ConnectionDialog ref="connectionDialogRef" v-model:visible="showConnectionDialog" />
 </template>

 <script setup lang="ts">
+import { nextTick } from 'vue'
 import { IconForward, IconHistory, IconRefresh, IconMenu, IconClose, IconRight, IconCopy, IconCheck } from '@arco-design/web-vue/es/icon'
 import type { ToolbarConfig } from '@/types/file-system'
 import PathBreadcrumb from './PathBreadcrumb.vue'
 import { useClipboardCopy } from '../composables/useClipboardCopy'
+import ConnectionIndicator from './ConnectionIndicator.vue'
+import ConnectionDialog from './ConnectionDialog.vue'

 // Props
 interface Props {
@@ -132,15 +156,33 @@ const props = defineProps<Props>()
 interface Emits {
  (e: 'update:filePath', path: string): void
  (e: 'update:showSidebar', show: boolean): void
+  (e: 'update:searchKeyword', keyword: string): void
  (e: 'refresh'): void
  (e: 'exitZip'): void
  (e: 'goToPath', path: string): void
  (e: 'openFile', path: string): void
  (e: 'navigateToZipDirectory', path: string): void
+  (e: 'connectionChanged'): void
 }

 const emit = defineEmits<Emits>()

+// 连接对话框
+const showConnectionDialog = ref(false)
+const connectionDialogRef = ref<InstanceType<typeof ConnectionDialog>>()
+const onConnectionChanged = async (_id: string) => {
+  emit('connectionChanged')
+}
+
+const onEditProfile = (id: string) => {
+  showConnectionDialog.value = true
+  // 等待 DOM 更新后调用 editProfile 填充表单
+  nextTick(() => connectionDialogRef.value?.editProfile(id))
+}
+
+// 历史记录下拉显隐（供父组件 Ctrl+H 调用）
+const historyPopupVisible = ref(false)
+
 // 事件处理
 const handleGoToPath = (path: string) => {
  emit('goToPath', path)
@@ -162,16 +204,28 @@ const handleNavigateToZipRoot = () => {
  emit('navigateToZipDirectory', '')
 }

-const handleNavigateToZipDirectory = (path: string) => {
-  emit('navigateToZipDirectory', path)
-}
-
 const handleToggleSidebar = () => {
  emit('update:showSidebar', !props.config.showSidebar)
 }

+const handleSearch = (keyword: string) => {
+  emit('update:searchKeyword', keyword)
+}
+
+const handleClearSearch = () => {
+  emit('update:searchKeyword', '')
+}
+
+// 切换历史记录下拉面板（供父组件 Ctrl+H 调用）
+const toggleHistoryDropdown = () => {
+  historyPopupVisible.value = !historyPopupVisible.value
+}
+
 const { copied, copy: copyPath } = useClipboardCopy()

+// 暴露方法给父组件
+defineExpose({ toggleHistoryDropdown })
+
 const handleCopyPath = async () => {
  await copyPath(props.config.filePath)
 }
@@ -202,32 +256,59 @@ const handleCopyPath = async () => {
  flex-shrink: 0;
 }

+.toolbar-right :deep(.arco-btn-size-small),
+.toolbar-right :deep(.arco-input-wrapper) {
+  height: 34px;
+}
+
+.toolbar-search {
+  width: 180px;
+  flex-shrink: 0;
+}
+
 .path-input-wrapper {
  flex: 1;
  min-width: 200px;
 }

-.path-input {
-  width: 100%;
-}
-
 .path-breadcrumb-wrapper {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 200px;
-  gap: 8px;
+  gap: 4px;
  padding: 4px 8px;
  background: var(--color-fill-1);
  border-radius: 4px;
  border: 1px solid var(--color-border);
  transition: border-color 0.2s;
+  overflow: visible;
 }

 .path-breadcrumb-wrapper:hover {
  border-color: var(--color-border-2);
 }

+.breadcrumb-sep {
+  color: var(--color-text-3);
+  font-size: 12px;
+  flex-shrink: 0;
+  line-height: 1;
+  margin: 0 1px;
+}
+
+.breadcrumb-right-actions {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  margin-left: auto;
+  flex-shrink: 0;
+}
+
+.shortcut-btn {
+  padding: 1px 3px;
+}
+
 .toolbar-copy-btn {
  padding: 2px 4px;
 }
@@ -253,12 +334,6 @@ const handleCopyPath = async () => {
  border-color: rgb(var(--primary-6));
 }

-.breadcrumb-separator {
-  color: var(--color-text-3);
-  font-size: 12px;
-  flex-shrink: 0;
-}
-
 .breadcrumb-tag {
  cursor: pointer;
  font-size: 12px;
@@ -272,12 +347,18 @@ const handleCopyPath = async () => {
  border-color: rgb(var(--primary-6));
 }

-.zip-path-text {
-  font-family: 'Consolas', 'Monaco', monospace;
-  font-size: 13px;
-  color: var(--color-text-2);
-  white-space: nowrap;
+/* 历史记录下拉 */
+.history-dropdown-content {
+  max-width: 420px;
+  max-height: 300px;
+  overflow-y: auto;
+}
+
+.history-path-text {
+  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 380px;
 }
 </style>
--- a/web/src/components/FileSystem/composables/useCommonPaths.ts
+++ b/web/src/components/FileSystem/composables/useCommonPaths.ts
@@ -5,90 +5,56 @@

 import { ref } from 'vue'
 import { PATH_ICONS } from '@/utils/constants'
+import { getCommonPaths } from '@/api/system'
+import { connectionManager } from '@/api/connection-manager'
 import type { ShortcutPath } from '@/types/file-system'

 export function useCommonPaths() {
-  // 系统路径
  const commonPaths = ref<ShortcutPath[]>([])
  const systemPaths = ref<Record<string, string>>({})

-  /**
-   * 加载常用系统路径
-   */
  const loadCommonPaths = async () => {
    try {
-      // 检查 Wails API 是否可用
-      if (!window.go?.main?.App?.GetCommonPaths) {
-        // 降级方案：使用默认路径
-        commonPaths.value = [
-          { name: '💿 C盘', path: 'C:\\' },
-          { name: '💿 D盘', path: 'D:\\' }
-        ]
-        return
-      }
-
-      const paths = await window.go.main.App.GetCommonPaths()
-      if (!paths) {
-        throw new Error('无法获取系统路径')
-      }
+      const paths = await getCommonPaths()
+      if (!paths) throw new Error('无法获取系统路径')

      systemPaths.value = paths
-      const platform = window.navigator.platform
      const pathList: ShortcutPath[] = []
+      // 根据返回数据判断平台（Linux agent 返回 root key，Windows 返回 root_ 前缀）
+      const isWin = !!Object.keys(paths).find(k => k.startsWith('root_'))

-      if (platform.includes('Win')) {
-        // Windows: 先添加基础路径，再添加所有盘符
+      if (isWin) {
        if (paths.desktop) pathList.push({ name: `${PATH_ICONS.DESKTOP} 桌面`, path: paths.desktop })
        if (paths.documents) pathList.push({ name: `${PATH_ICONS.DOCUMENTS} 文档`, path: paths.documents })
        if (paths.downloads) pathList.push({ name: `${PATH_ICONS.DOWNLOADS} 下载`, path: paths.downloads })
        if (paths.home) pathList.push({ name: `${PATH_ICONS.HOME} 用户目录`, path: paths.home })
-
-        // 动态添加所有盘符（按字母顺序）
        const drives: Array<{ letter: string; path: string }> = []
        for (const key in paths) {
          if (key.startsWith('root_')) {
-            const driveLetter = key.substring(5)
-            drives.push({
-              letter: driveLetter,
-              path: paths[key]
-            })
+            drives.push({ letter: key.substring(5), path: paths[key] })
          }
        }
        drives.sort((a, b) => a.letter.localeCompare(b.letter))
-
-        // 添加盘符到路径列表
-        drives.forEach(drive => {
-          pathList.push({
-            name: `${PATH_ICONS.DRIVE} ${drive.letter}盘`,
-            path: drive.path
-          })
-        })
+        drives.forEach(d => pathList.push({ name: `${PATH_ICONS.DRIVE} ${d.letter}盘`, path: d.path }))
      } else {
-        // macOS/Linux: 使用系统路径
-        if (paths.desktop) pathList.push({ name: `${PATH_ICONS.DESKTOP} 桌面`, path: paths.desktop })
-        if (paths.documents) pathList.push({ name: `${PATH_ICONS.DOCUMENTS} 文档`, path: paths.documents })
-        if (paths.downloads) pathList.push({ name: `${PATH_ICONS.DOWNLOADS} 下载`, path: paths.downloads })
+        // Linux 远程模式
        if (paths.home) pathList.push({ name: `${PATH_ICONS.HOME} 主目录`, path: paths.home })
-        pathList.push({ name: `${PATH_ICONS.ROOT} 根目录`, path: '/' })
+        if (paths.root) pathList.push({ name: `${PATH_ICONS.ROOT} 根目录`, path: '/' })
+        if (paths.users) pathList.push({ name: `👥 /home`, path: paths.users })
      }

-      commonPaths.value = pathList.length > 0 ? pathList : [
-        { name: '💿 C盘', path: 'C:\\' },
-        { name: '💿 D盘', path: 'D:\\' }
-      ]
+      commonPaths.value = pathList.length > 0 ? pathList : (
+        connectionManager.isRemote()
+          ? [{ name: `${PATH_ICONS.ROOT} 根目录`, path: '/' }]
+          : [{ name: '💿 C盘', path: 'C:\\' }, { name: '💿 D盘', path: 'D:\\' }]
+      )
    } catch (error) {
      console.error('加载系统路径失败:', error)
-      // 降级方案
-      commonPaths.value = [
-        { name: '💿 C盘', path: 'C:\\' },
-        { name: '💿 D盘', path: 'D:\\' }
-      ]
+      commonPaths.value = connectionManager.isRemote()
+        ? [{ name: `${PATH_ICONS.ROOT} 根目录`, path: '/' }]
+        : [{ name: '💿 C盘', path: 'C:\\' }, { name: '💿 D盘', path: 'D:\\' }]
    }
  }

-  return {
-    commonPaths,
-    systemPaths,
-    loadCommonPaths
-  }
+  return { commonPaths, systemPaths, loadCommonPaths }
 }
--- a/web/src/components/FileSystem/composables/useFavorites.ts
+++ b/web/src/components/FileSystem/composables/useFavorites.ts
@@ -21,18 +21,12 @@ export function useFavorites() {
  })

  /**
-   * 排序收藏列表：置顶项在前（按 pinnedAt 降序），非置顶项按添加时间降序
+   * 排序收藏列表：置顶项归到前面，组内保持原有顺序（尊重拖拽）
   */
  const sortFavorites = () => {
-    favorites.value = [...favorites.value].sort((a, b) => {
-      // 置顶项优先
-      if (a.pinnedAt && !b.pinnedAt) return -1
-      if (!a.pinnedAt && b.pinnedAt) return 1
-      // 都是置顶项，按置顶时间降序
-      if (a.pinnedAt && b.pinnedAt) return b.pinnedAt - a.pinnedAt
-      // 都不是置顶项，按添加时间降序（最新在前）
-      return b.addedAt - a.addedAt
-    })
+    const pinned = favorites.value.filter(f => f.pinnedAt)
+    const unpinned = favorites.value.filter(f => !f.pinnedAt)
+    favorites.value = [...pinned, ...unpinned]
  }

  /**
@@ -50,7 +44,7 @@ export function useFavorites() {
          isDir: fav.isDir ?? (fav as any).is_dir ?? false
        }))

-        // 排序
+        // 仅排序（置顶项归组到前面），保持用户拖拽顺序
        sortFavorites()
      }
    } catch (error) {
@@ -171,15 +165,23 @@ export function useFavorites() {
  }

  // 拖拽方法
+  const longPressTimer = ref<ReturnType<typeof setTimeout> | null>(null)
+
  const onLongPressStart = (event: MouseEvent | TouchEvent, index: number) => {
    if (event instanceof MouseEvent && event.button !== 0) return
    if (!(event instanceof MouseEvent) && !(event instanceof TouchEvent)) return

+    longPressTimer = setTimeout(() => {
      draggingState.value.pressedIndex = index
      draggingState.value.draggedIndex = index
+    }, 200)
  }

  const onLongPressCancel = () => {
+    if (longPressTimer) {
+      clearTimeout(longPressTimer)
+      longPressTimer = null
+    }
    if (!draggingState.value.isDragging) {
      draggingState.value.pressedIndex = -1
      draggingState.value.draggedIndex = -1
@@ -191,7 +193,6 @@ export function useFavorites() {
    draggingState.value.draggedIndex = index
    if (event.dataTransfer) {
      event.dataTransfer.effectAllowed = 'move'
-      event.dataTransfer.setData('text/plain', index.toString())
    }
  }

--- a/web/src/components/FileSystem/composables/useFileEdit.ts
+++ b/web/src/components/FileSystem/composables/useFileEdit.ts
@@ -13,10 +13,11 @@ import {
  isTextEditable, isConfigFile
 } from '@/utils/fileTypeHelpers'
 import { useFileOperations } from './useFileOperations'
+import type { FileItem } from '@/types/file-system'

 export interface UseFileEditOptions {
-  currentFilePath?: any
-  currentDirectory?: any
+  currentFilePath?: import('vue').Ref<FileItem | null>
+  currentDirectory?: import('vue').Ref<string>
 }

 // 文件大小限制（5MB）
@@ -46,9 +47,6 @@ export function useFileEdit(options: UseFileEditOptions = {}) {
  // 文件版本跟踪（用于防止切换文件后的过期更新）
  const fileVersion = ref(0)

-  // 最后一次文件加载的时间戳，用于过滤过期更新
-  const lastLoadTime = ref(0)
-
  // 使用文件操作 composable
  const { readFile, writeFile } = useFileOperations({
    onSuccess: (operation, data) => {
@@ -81,7 +79,7 @@ export function useFileEdit(options: UseFileEditOptions = {}) {
   * 判断是否为二进制文件（基于扩展名）
   * 返回值: true=已知二进制, false=已知非二进制(文本/媒体/Office), null=未知需检测
   */
-  const isBinaryFileByExt = (filepath: any): boolean | null => {
+  const isBinaryFileByExt = (filepath: string | FileItem): boolean | null => {
    const path = getFilePath(filepath)
    const ext = getExt(path)
    if (!ext) return null // 无扩展名返回 null，表示需要进一步检测
@@ -185,9 +183,6 @@ export function useFileEdit(options: UseFileEditOptions = {}) {
      // 增加文件版本号，使之前的过期更新失效
      fileVersion.value++

-      // 记录加载时间戳，用于过滤过期更新
-      lastLoadTime.value = Date.now()
-
      // 注意：不再清空内容，避免 HTML 预览切换时闪烁
      // 新内容加载完成后会直接替换旧内容

@@ -456,6 +451,33 @@ ${ext ? `文件类型:  ${fileTypeDesc}\n` : ''}
    }
  }

+  /**
+   * 仅更新文件路径（重命名场景：内容不变，只切换路径关联）
+   * 迁移草稿 key，更新 currentFilePathRef
+   */
+  const updateFilePath = (newPath: string) => {
+    const oldPath = currentFilePathRef.value
+
+    // 迁移草稿（旧 key → 新 key）
+    if (draftKey.value && oldPath !== newPath) {
+      try {
+        const draft = localStorage.getItem(draftKey.value)
+        if (draft) {
+          const newKey = `${STORAGE_KEYS.FILESYSTEM.FILE_DRAFT}-${newPath}`
+          localStorage.setItem(newKey, draft)
+          localStorage.removeItem(draftKey.value)
+          draftKey.value = newKey
+        }
+      } catch (error) {
+        console.warn('[useFileEdit] 草稿迁移失败:', error)
+      }
+    }
+
+    // 只更新内部路径字符串引用，不触碰 currentFilePath（它是 FileItem 对象，由父组件管理）
+    // 这样不会触发 watch → clearDraft
+    currentFilePathRef.value = newPath
+  }
+
  /**
   * 重置文件内容
   */
@@ -501,14 +523,10 @@ ${ext ? `文件类型:  ${fileTypeDesc}\n` : ''}
  }

  /**
-   * 更新文件内容
-   * 注意：需要确保更新后 fileContent 和 originalContent 保持正确的同步关系
+   * 更新文件内容（仅版本号匹配时接受，防止快速切换文件时旧更新覆盖新内容）
   */
  const updateContent = (content: string, expectedVersion?: number) => {
-    // 如果提供了期望的版本号，检查是否匹配
-    // 这用于防止快速切换文件时，旧文件的防抖更新覆盖新文件的内容
    if (expectedVersion !== undefined && expectedVersion !== fileVersion.value) {
-      // 版本不匹配，这是一个过期的更新，忽略它
      console.debug('[useFileEdit] 忽略过期更新（版本不匹配）:', {
        expected: expectedVersion,
        current: fileVersion.value,
@@ -517,25 +535,9 @@ ${ext ? `文件类型:  ${fileTypeDesc}\n` : ''}
      return
    }

-    // 额外检查：如果更新是在文件加载后的短时间内，可能是过期更新
-    // 防抖时间是 150ms，我们使用 300ms 的安全边际
-    const timeSinceLoad = Date.now() - lastLoadTime.value
-    if (timeSinceLoad < 300) {
-      console.debug('[useFileEdit] 忽略过期更新（时间窗口内）:', {
-        timeSinceLoad,
-        content: content.substring(0, 50)
-      })
-      return
-    }
-
-    // 确保只有在内容真正改变时才更新
    if (fileContent.value !== content) {
      fileContent.value = content
    }
-
-    // 自动保存草稿（防抖）
-    // 实际实现应该使用防抖函数
-    // saveDraft()
  }

  /**
@@ -556,12 +558,6 @@ ${ext ? `文件类型:  ${fileTypeDesc}\n` : ''}
    return filePath.startsWith(currentDirectory.value)
  }

-  // 监听文件内容变化，自动保存草稿
-  watch(fileContent, () => {
-    // 实际实现应该使用防抖
-    // saveDraft()
-  }, { deep: true })
-
  // 监听文件路径变化，清除草稿
  watch(currentFilePath, (newPath, oldPath) => {
    if (newPath !== oldPath) {
@@ -604,6 +600,7 @@ ${ext ? `文件类型:  ${fileTypeDesc}\n` : ''}
    // 其他
    resetContent,
    clearContent,
+    updateFilePath,
    setEditorHeight,

    // 文件类型检查
--- a/web/src/components/FileSystem/composables/useFilePreview.ts
+++ b/web/src/components/FileSystem/composables/useFilePreview.ts
@@ -7,6 +7,7 @@ import { ref } from 'vue'
 import { FILE_EXTENSIONS, FILE_SIZE_THRESHOLDS } from '@/utils/constants'
 import { normalizeFilePath, getExt } from '@/utils/fileUtils'
 import { detectFileTypeByContent } from '@/api/system'
+import { connectionManager } from '@/api/connection-manager'
 import {
  isImageFile, isVideoFile, isAudioFile, isPdfFile,
  isHtmlFile, isMarkdownFile, isPreviewable as isPreviewableType,
@@ -26,12 +27,22 @@ export interface UseFilePreviewOptions {
  isBrowsingZip?: boolean
 }

+function getLocalServerURL(): string {
+  return 'http://localhost:8073'
+}
+
+function resolveFileServerBase(): string {
+  // 单一数据源：从 connectionManager 实时读取，不缓存
+  if (!connectionManager.isRemote()) return getLocalServerURL()
+  const base = connectionManager.getFileServerBaseURL()
+  if (!base) return getLocalServerURL()
+  // 远程模式需要完整代理路径前缀 /api/v1/proxy/localfs
+  return base.replace(/\/$/, '') + '/api/v1/proxy/localfs'
+}
+
 export function useFilePreview(options: UseFilePreviewOptions = {}) {
  const { filePath = ref(''), isBrowsingZip = ref(false) } = options

-  // 文件服务器 URL（硬编码，与旧版本保持一致）
-  const fileServerURL = 'http://localhost:18765'
-
  // 预览 URL
  const previewUrl = ref('')

@@ -40,12 +51,19 @@ export function useFilePreview(options: UseFilePreviewOptions = {}) {
  const currentImageDimensions = ref('')

  /**
-   * 获取预览 URL（与旧版本保持一致）
+   * 获取预览 URL（本地/远程自适应，每次实时计算）
+   * 本地: http://localhost:8073/localfs/{encoded_path}
+   * 远程: {baseUrl}/api/v1/proxy/localfs/{raw_path}（Cookie 自动携带认证）
   */
  const getPreviewUrl = (path: string): string => {
    if (!path) return ''
-    // 使用与旧版本相同的 URL 格式：/localfs/ 路径 + 规范化路径
-    return `${fileServerURL}/localfs/${normalizeFilePath(path, true)}`
+    const isRemote = connectionManager.isRemote()
+    const base = resolveFileServerBase()
+    let normalized = normalizeFilePath(path, true)
+    // 远程模式去掉前导 /，避免与 URL 基础路径拼接产生双斜杠（导致 307 重定向）
+    if (isRemote && normalized.startsWith('/')) normalized = normalized.slice(1)
+    const sep = base.endsWith('/') ? '' : '/'
+    return `${base}${sep}${isRemote ? '' : 'localfs/'}${normalized}`
  }

  /**
@@ -76,7 +94,7 @@ export function useFilePreview(options: UseFilePreviewOptions = {}) {
  /**
   * 更新预览 URL
   */
-  const updatePreviewUrl = (path: string) => {
+  const updatePreviewUrl = async (path: string) => {
    previewUrl.value = getPreviewUrl(path)
  }

@@ -188,12 +206,6 @@ export function useFilePreview(options: UseFilePreviewOptions = {}) {

    // 文件类型判断（同步，基于扩展名）
    getFileType,
-    isImageFile,
-    isVideoFile,
-    isAudioFile,
-    isPdfFile,
-    isHtmlFile,
-    isMarkdownFile,
    isPreviewable,
    isEditable,

--- a/web/src/components/FileSystem/index.vue
+++ b/web/src/components/FileSystem/index.vue
@@ -2,6 +2,7 @@
  <div class="file-system-container">
    <!-- 顶部工具栏 -->
    <Toolbar
+      ref="toolbarRef"
      :config="toolbarConfig"
      @update:file-path="handleFilePathUpdate"
      @update:show-sidebar="handleSidebarToggle"
@@ -10,7 +11,9 @@
      @go-to-path="handleGoToPath"
      @open-file="handleOpenFile"
      @navigate-to-zip-directory="handleNavigateToZipDirectory"
+      @update:search-keyword="handleSearchKeywordUpdate"
      @show-message="handleShowMessage"
+      @connection-changed="handleConnectionChanged"
    />

    <!-- 主内容区 -->
@@ -54,9 +57,8 @@
        <!-- 分隔条 -->
        <div class="resizer" @mousedown="handleHorizontalResize"></div>

-        <!-- 文件编辑器面板 -->
+        <!-- 文件编辑器面板（始终显示，无选中文件时为空白预览区） -->
        <FileEditorPanel
-          v-if="hasSelectedFile"
          :config="fileEditorPanelConfig"
          :width="panelWidth.right"
          :current-directory="filePath"
@@ -105,7 +107,7 @@
 import { ref, computed, onMounted, onUnmounted, watch, nextTick } from 'vue'
 import { getPathSeparator } from '@/utils/fileUtils'
 import { Message, Modal } from '@arco-design/web-vue'
-import { marked, renderMermaidDiagrams, rerenderMermaidDiagrams } from '@/utils/markedExtensions'
+import { marked, renderMermaidDiagrams, rerenderMermaidDiagrams, setCurrentFileDir, setFileServerBase } from '@/utils/markedExtensions'
 import { useThemeStore } from '@/stores/theme'

 // 导入子组件
@@ -127,6 +129,7 @@ import { useCommonPaths } from './composables/useCommonPaths'
 import { getFileName, sortFileList } from '@/utils/fileUtils'
 import { isImageFile, isVideoFile, isAudioFile, isPdfFile, isHtmlFile, isMarkdownFile, isExcelFile, isWordFile, isCsvFile } from '@/utils/fileTypeHelpers'
 import { listDir, saveBase64File } from '@/api/system'
+import { connectionManager } from '@/api/connection-manager'
 import { STORAGE_KEYS, DEFAULTS, UI_TEXT, VALIDATION_RULES, FILE_EXTENSIONS, FILE_SIZE_THRESHOLDS } from '@/utils/constants'
 import { createResizeHandler } from '@/utils/resize'

@@ -152,6 +155,7 @@ const isEditableWithPreview = (filename: string): boolean => {
 const fileList = ref<FileItem[]>([])
 const fileLoading = ref(false)
 const selectedFileItem = ref<FileItem | null>(null)
+const toolbarRef = ref<InstanceType<typeof import('./components/Toolbar.vue').default> | null>(null)

 // 排序状态（带 localStorage 持久化）
 const SORT_STORAGE_KEY = STORAGE_KEYS.FILESYSTEM.SORT
@@ -187,6 +191,18 @@ const editingFileName = ref('')
 // 侧边栏
 const showSidebar = ref(true)

+// 搜索
+const searchKeyword = ref('')
+
+// 过滤后的文件列表（基于搜索关键词）
+const filteredFileList = computed(() => {
+  const keyword = searchKeyword.value.trim().toLowerCase()
+  if (!keyword) return fileList.value
+  return fileList.value.filter(item =>
+    item.name.toLowerCase().includes(keyword)
+  )
+})
+
 // 面板宽度（带 localStorage 持久化）
 const restorePanelWidth = (): { left: number; right: number } => {
  try {
@@ -271,7 +287,7 @@ const { previewUrl, updatePreviewUrl, imageLoading, currentImageDimensions, dete
  })

 // 文件编辑
-const { fileContent, originalContent, isEditMode, fileContentHeight, contentChanged, canSaveFile, canResetContent, loadFile, saveFile, resetContent, clearContent, toggleEditMode, updateContent, setEditorHeight, isBinaryFile: isBinaryFileRef, fileVersion } =
+const { fileContent, originalContent, isEditMode, fileContentHeight, contentChanged, canSaveFile, canResetContent, loadFile, saveFile, resetContent, clearContent, updateFilePath, toggleEditMode, updateContent, setEditorHeight, isBinaryFile: isBinaryFileRef, fileVersion } =
  useFileEdit({
    currentFilePath: selectedFileItem,
    currentDirectory: filePath
@@ -295,7 +311,8 @@ const toolbarConfig = computed(() => ({
  fileLoading: fileLoading.value,
  showSidebar: showSidebar.value,
  sortBy: sortBy.value,
-  sortOrder: sortOrder.value
+  sortOrder: sortOrder.value,
+  searchKeyword: searchKeyword.value
 }))

 // 侧边栏配置
@@ -307,7 +324,7 @@ const sidebarConfig = computed(() => ({

 // 文件列表面板配置
 const fileListPanelConfig = computed(() => ({
-  fileList: fileList.value,
+  fileList: filteredFileList.value,
  fileLoading: fileLoading.value,
  selectedFileItem: selectedFileItem.value,
  editingFilePath: editingFilePath.value,
@@ -320,10 +337,24 @@ const computeRendered = computed(() => {
  if (isHtmlFile(currentFileName)) {
    return fileContent.value || ''
  } else if (isMarkdownFile(currentFileName)) {
-    // 使用配置好的 marked 渲染 Markdown（支持 mermaid）
+    // 使用配置好的 marked 渲染 Markdown（支持 mermaid + 图片相对路径转换）
    try {
      const content = fileContent.value || ''
-      return marked(content)
+
+      // 设置图片路径转换所需的上下文（renderer.image 钩子中读取）
+      // dir: 当前 md 文件所在目录（从文件完整路径中去掉文件名）
+      const fullPath = selectedFileItem.value?.path || ''
+      const dir = fullPath ? fullPath.replace(/[/\\][^/\\]+$/, '') : (filePath.value || '')
+      setCurrentFileDir(dir)
+
+      // 设置文件服务器 Base URL
+      const isRemote = connectionManager.isRemote()
+      const base = isRemote
+        ? (connectionManager.getFileServerBaseURL().replace(/\/$/, '') + '/api/v1/proxy/localfs')
+        : 'http://localhost:8073/localfs'
+      setFileServerBase(base)
+
+      return marked.parse(content) as string
    } catch (error) {
      console.error('Markdown 解析失败:', error)
      return fileContent.value || ''
@@ -363,7 +394,8 @@ const fileEditorPanelConfig = computed(() => {
    imageLoading: imageLoading.value,
    currentImageDimensions: currentImageDimensions.value,
    currentFileExtension,
-    isBinaryFile: isBinaryFileRef.value
+    isBinaryFile: isBinaryFileRef.value,
+    fileMtime: selectedFileItem.value?.modified_time || ''
  }
 })

@@ -382,6 +414,23 @@ const handleRefresh = async () => {
  await loadDirectory(filePath.value)
 }

+// 连接切换后重置路径（仅监听状态变化以刷新快捷入口，不做自动导航）
+connectionManager.onStateChange(async (state) => {
+  if (state === 'connected') {
+    await loadCommonPaths()
+  }
+})
+
+const handleSearchKeywordUpdate = (keyword: string) => {
+  searchKeyword.value = keyword
+}
+
+// 用户主动切换连接时重置到根路径
+const handleConnectionChanged = async () => {
+  await loadCommonPaths()
+  await navigate(connectionManager.isRemote() ? '/' : 'C:/')
+}
+
 const handleGoToPath = async (path: string) => {
  await navigate(path)
 }
@@ -479,6 +528,26 @@ const handleShowMessage = (message: string, type: 'success' | 'error' | 'warning

 // 侧边栏事件
 const handleOpenFavorite = async (file: FavoriteFile) => {
+  // 根据路径格式自动切换连接（Linux 路径 → 远程，Windows 路径 → 本地）
+  const isLinuxPath = /^[\/]/.test(file.path) && !/^[A-Za-z]:/.test(file.path)
+  const shouldBeRemote = isLinuxPath
+  const isCurrentlyRemote = connectionManager.isRemote()
+
+  if (shouldBeRemote !== isCurrentlyRemote) {
+    // 需要切换连接
+    if (shouldBeRemote) {
+      // 切换到远程：找第一个 remote profile
+      const remoteProfile = connectionManager.profiles.find(p => p.type === 'remote')
+      if (remoteProfile) {
+        connectionManager.connect(remoteProfile.id)
+      }
+    } else {
+      // 切换到本地
+      connectionManager.disconnect()
+    }
+    await loadCommonPaths()
+  }
+
  if (file.isDir) {
    await navigate(file.path)
  } else {
@@ -619,24 +688,12 @@ const handleSaveEditing = async (oldPath: string, newName: string) => {
  }

  try {
-    // 如果重命名的是当前打开的文件，先关闭编辑器和预览
-    if (selectedFileItem.value?.path === oldPath) {
-      // 如果是文件（不是文件夹），才需要关闭编辑器
-      if (!selectedFileItem.value.isDir) {
-        // 清空编辑器内容
-        await clearContent()
+    // 标记是否需要重命名后仅更新路径（内容不变，零闪烁）
+    let needUpdatePath = false

-        // 清空预览URL
-        if (previewUrl.value) {
-          previewUrl.value = ''
-        }
-      }
-
-      // 取消选中状态
-      selectedFileItem.value = null
-
-      // 等待文件句柄释放（文件需要更长时间）
-      await new Promise(resolve => setTimeout(resolve, 300))
+    // 如果重命名的是当前打开的文件
+    if (selectedFileItem.value?.path === oldPath && !selectedFileItem.value.isDir) {
+      needUpdatePath = true
    }

    const renamedFile = await fileOps.rename(oldPath, trimmedName)
@@ -650,6 +707,13 @@ const handleSaveEditing = async (oldPath: string, newName: string) => {
    }

    Message.success(`✓ 重命名成功: ${trimmedName}`)
+
+    // 仅更新路径关联，不重新加载内容（编辑器内容不变，零闪烁）
+    if (needUpdatePath && !renamedFile.isDir) {
+      selectedFileItem.value = renamedFile
+      updateFilePath(newPath)
+      updatePreviewUrl(newPath)
+    }
  } catch (error: any) {
    // 提取错误信息
    let errorMsg = error?.message || error?.toString() || '未知错误'
@@ -1008,6 +1072,9 @@ const selectFile = async (path: string) => {

  // 加载文件内容
  await loadFileContent(path)
+
+  // 记住上次打开的文件
+  localStorage.setItem(STORAGE_KEYS.FILESYSTEM.LAST_OPENED_FILE, path)
 }

 const loadFileContent = async (path: string) => {
@@ -1162,7 +1229,7 @@ const extractZipImageAndPreview = async (zipPath: string, filePath: string): Pro
    const temp = await fileOps.extractZipFileToTemp(zipPath, filePath)
    const url = await fileOps.getFileServerURL()
    const normalized = temp.replace(/\\/g, '/')
-    updatePreviewUrl(`${url}/localfs/${encodeURIComponent(normalized)}`)
+    updatePreviewUrl(normalized)
  } catch (error) {
    console.error('提取图片失败:', error)
    Message.error(`提取图片失败: ${error}`)
@@ -1201,18 +1268,32 @@ const handleHorizontalResize = createResizeHandler(

 // ========== 生命周期 ==========

-onMounted(() => {
-  // 加载系统路径
-  loadCommonPaths()
+onMounted(async () => {
+  // 加载系统路径（阻塞，确保快捷入口就绪）
+  await loadCommonPaths()

-  // 初始化加载
-  if (!filePath.value) {
-    // 设置默认路径
-    const defaultPath = commonPaths.value.length > 0 ? commonPaths.value[0].path : 'C:\\'
-    filePath.value = defaultPath
-    loadDirectory(defaultPath)
+  // 初始化加载：远程模式强制用根路径，避免 localStorage 残留 Windows 路径
+  const startPath = connectionManager.isRemote() ? '/'
+    : (commonPaths.value.length > 0 ? commonPaths.value[0].path : 'C:/')
+  if (filePath.value && !connectionManager.isRemote()) {
+    await loadDirectory(filePath.value)
  } else {
-    loadDirectory(filePath.value)
+    filePath.value = startPath
+    await loadDirectory(startPath)
+  }
+
+  // 恢复上次打开的文件
+  const lastFile = localStorage.getItem(STORAGE_KEYS.FILESYSTEM.LAST_OPENED_FILE)
+  if (lastFile) {
+    const normalized = lastFile.replace(/\\/g, '/').replace(/\/+$/, '')
+    const currentDir = filePath.value.replace(/\\/g, '/').replace(/\/+$/, '')
+    const lastFileDir = normalized.substring(0, normalized.lastIndexOf('/')) || '/'
+    if (lastFileDir.toLowerCase() === currentDir.toLowerCase()) {
+      const found = fileList.value.find(f => f.path.replace(/\\/g, '/').toLowerCase() === normalized.toLowerCase())
+      if (found && !found.isDir) {
+        await selectFile(found.path)
+      }
+    }
  }

  // 添加键盘快捷键
@@ -1237,12 +1318,23 @@ const handleKeyDown = async (event: KeyboardEvent) => {
    return
  }

-  // F5 刷新文件列表
+  // F5 刷新文件列表 + 重载当前预览文件
  if (event.key === 'F5') {
    event.preventDefault()
    if (filePath.value) {
-      loadDirectory(filePath.value)
+      await loadDirectory(filePath.value)
+      // 如果有正在预览的文件，同时重新加载其内容（类似重新点击一次）
+      if (selectedFileItem.value && !selectedFileItem.value.isDir) {
+        await loadFileContent(selectedFileItem.value.path)
      }
+    }
+    return
+  }
+
+  // Ctrl+H 打开历史记录面板
+  if ((event.ctrlKey || event.metaKey) && event.key === 'h') {
+    event.preventDefault()
+    toolbarRef.value?.toggleHistoryDropdown?.()
    return
  }

@@ -1470,7 +1562,7 @@ watch(() => themeStore.isDark, async () => {
 }

 .resizer {
-  width: 4px;
+  width: 3px;
  background: var(--color-border);
  cursor: col-resize;
  transition: background 0.2s;
--- a/web/src/components/UpdateNotification.vue
+++ b/web/src/components/UpdateNotification.vue
@@ -6,6 +6,8 @@
 import { computed, watch, onMounted, onUnmounted, h, nextTick } from 'vue'
 import { Modal, Message, Progress } from '@arco-design/web-vue'
 import { useUpdateStore } from '../stores/update'
+import { marked } from '../utils/markedExtensions'
+import { sanitizeHtml } from '@/utils/fileUtils'

 const props = defineProps({
  modelValue: {
@@ -66,8 +68,8 @@ const showUpdateModal = () => {
    title: forceUpdate.value ? '重要更新' : '发现新版本',
    content: () => {
      const elements = [
-        h('div', { style: { marginBottom: '12px' } }, [
-          h('span', { style: { fontSize: '14px', color: 'var(--color-text-2)' } }, '版本：'),
+        h('div', { style: { marginBottom: '8px' } }, [
+          h('span', { style: { fontSize: '13px', color: 'var(--color-text-2)' } }, '版本：'),
          h('span', { style: { fontSize: '14px', color: 'var(--color-text-1)', marginLeft: '8px' } }, currentVersion.value),
          h('span', { style: { fontSize: '14px', color: 'var(--color-text-2)', marginLeft: '12px', marginRight: '12px' } }, '→'),
          h('span', { style: { fontSize: '16px', color: 'rgb(var(--primary-6))', fontWeight: '500' } }, latestVersion.value)
@@ -76,20 +78,23 @@ const showUpdateModal = () => {

      // 更新日志
      if (changelog.value) {
+        const changelogHtml = (() => { try { return sanitizeHtml(String(marked.parse(changelog.value))) } catch { return changelog.value } })()
        elements.push(
-          h('div', { style: { marginBottom: '12px' } }, [
-            h('div', { style: { fontSize: '13px', color: 'var(--color-text-2)', marginBottom: '8px' } }, '更新内容：'),
+          h('div', { style: { marginBottom: '8px' } }, [
+            h('div', { style: { fontSize: '12px', color: 'var(--color-text-2)', marginBottom: '4px' } }, '更新内容：'),
            h('div', {
              style: {
-                fontSize: '13px',
+                fontSize: '12px',
                color: 'var(--color-text-2)',
-                lineHeight: '1.8',
-                padding: '12px',
+                lineHeight: '1.6',
+                padding: '10px 12px',
                background: 'var(--color-fill-1)',
                borderRadius: '4px',
-                whiteSpace: 'pre-wrap'
-              }
-            }, changelog.value)
+                maxHeight: '240px',
+                overflowY: 'auto'
+              },
+              innerHTML: changelogHtml
+            })
          ])
        )
      }
@@ -104,7 +109,7 @@ const showUpdateModal = () => {
      }
      if (metadata.length > 0) {
        elements.push(
-          h('div', { style: { marginBottom: '12px', fontSize: '13px', color: 'var(--color-text-3)' } }, metadata.join(' · '))
+          h('div', { style: { marginBottom: '4px', fontSize: '12px', color: 'var(--color-text-3)' } }, metadata.join(' · '))
        )
      }

--- a/web/src/components/UpdatePanel.vue
+++ b/web/src/components/UpdatePanel.vue
@@ -30,7 +30,7 @@
          <div class="changelog-title">
            {{ updateInfo.has_update ? '最新版本更新内容' : '当前版本更新内容' }}
          </div>
-          <div class="changelog">{{ updateInfo.changelog }}</div>
+          <div class="changelog" v-html="renderChangelog(updateInfo.changelog)" />
        </div>
      </a-card>

@@ -92,8 +92,8 @@
            :status="downloadStatus"
          />
          <div class="progress-info">
-            <span>{{ formatFileSize(progressInfo.downloaded) }} / {{ formatFileSize(progressInfo.total) }}</span>
-            <span v-if="progressInfo.speed > 0">{{ formatSpeed(progressInfo.speed) }}</span>
+            <span>{{ updateStore.formatFileSize(progressInfo.downloaded) }} / {{ updateStore.formatFileSize(progressInfo.total) }}</span>
+            <span v-if="progressInfo.speed > 0">{{ updateStore.formatSpeed(progressInfo.speed) }}</span>
          </div>
        </div>

@@ -118,6 +118,8 @@ import { Message, Modal } from '@arco-design/web-vue'
 import { storeToRefs } from 'pinia'
 import { IconHistory } from '@arco-design/web-vue/es/icon'
 import { useUpdateStore } from '../stores/update'
+import { marked } from '../utils/markedExtensions'
+import { sanitizeHtml } from '@/utils/fileUtils'

 // Emits
 defineEmits(['open-version-history'])
@@ -134,13 +136,10 @@ const lastCheckTime = ref('-')
 const installResult = ref(null)
 const downloadedFile = ref(null)

-// 工具函数
-const formatFileSize = (bytes) => {
-  return updateStore.formatFileSize(bytes)
-}
-
-const formatSpeed = (bytesPerSecond) => {
-  return updateStore.formatSpeed(bytesPerSecond)
+/** 渲染 changelog（Markdown → HTML） */
+function renderChangelog(text: string): string {
+  if (!text) return ''
+  try { return sanitizeHtml(marked.parse(text) as string) } catch { return text }
 }

 // 加载当前版本
@@ -283,29 +282,70 @@ onUnmounted(() => {
 }

 .changelog-section {
-  margin-top: 16px;
+  margin-top: 12px;
 }

 .changelog-title {
-  font-size: 14px;
+  font-size: 13px;
  font-weight: 500;
-  color: var(--color-text-1);
-  margin-bottom: 8px;
+  color: var(--color-text-2);
+  margin-bottom: 6px;
 }

 .changelog {
-  background: var(--color-fill-2);
-  padding: 12px;
+  background: var(--color-fill-1);
+  padding: 10px 12px;
  border-radius: 4px;
-  white-space: pre-wrap;
-  margin: 8px 0;
-  max-height: 200px;
+  margin: 0;
+  max-height: 280px;
  overflow-y: auto;
-  font-size: 13px;
-  line-height: 1.6;
+  font-size: 12px;
+  line-height: 1.65;
  color: var(--color-text-2);
 }

+.changelog :deep(h4) {
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--color-text-1);
+  margin: 8px 0 3px;
+}
+
+.changelog :deep(h4:first-child) {
+  margin-top: 0;
+}
+
+.changelog :deep(ul) {
+  list-style: none;
+  padding: 0;
+  margin: 1px 0;
+}
+
+.changelog :deep(li) {
+  position: relative;
+  padding-left: 14px;
+  margin: 1px 0;
+}
+
+.changelog :deep(li::before) {
+  content: '·';
+  position: absolute;
+  left: 4px;
+  color: var(--color-text-4);
+  font-weight: bold;
+}
+
+.changelog :deep(code) {
+  background: var(--color-fill-3);
+  padding: 0 4px;
+  border-radius: 3px;
+  font-size: 11px;
+}
+
+.changelog :deep(p) {
+  margin: 2px 0;
+}
+
 .download-progress {
  margin-top: 16px;
  padding: 16px;
--- a/web/src/composables/useVisibleDatabases.ts
+++ b/web/src/composables/useVisibleDatabases.ts
@@ -1,50 +0,0 @@
-/**
- * 可见数据库管理 Composable
- * 封装 visible_databases 字段的解析和过滤逻辑
- */
-
-/**
- * 解析可见数据库 JSON 字符串
- * @param jsonStr - JSON 字符串或 null
- * @returns 解析后的数据库数组，解析失败返回空数组
- */
-export function parseVisibleDatabases(jsonStr: string | null): string[] {
-  if (!jsonStr) return []
-  try {
-    const parsed = JSON.parse(jsonStr)
-    return Array.isArray(parsed) ? parsed : []
-  } catch {
-    return []
-  }
-}
-
-/**
- * 根据可见数据库配置过滤数据库列表
- * @param databases - 完整的数据库列表
- * @param visibleJson - 可见数据库 JSON 字符串
- * @returns 过滤后的数据库列表（如果未配置过滤则返回全部）
- */
-export function filterDatabases(databases: string[], visibleJson: string | null): string[] {
-  const visible = parseVisibleDatabases(visibleJson)
-  return visible.length > 0 ? databases.filter(db => visible.includes(db)) : databases
-}
-
-/**
- * 将数据库数组序列化为 JSON 字符串（空数组返回空字符串）
- * @param databases - 数据库数组
- * @returns JSON 字符串或空字符串
- */
-export function serializeVisibleDatabases(databases: string[]): string {
-  return databases.length > 0 ? JSON.stringify(databases) : ''
-}
-
-/**
- * 可见数据库管理 Composable
- */
-export function useVisibleDatabases() {
-  return {
-    parse: parseVisibleDatabases,
-    filter: filterDatabases,
-    serialize: serializeVisibleDatabases,
-  }
-}
--- a/web/src/stores/config.ts
+++ b/web/src/stores/config.ts
@@ -15,7 +15,7 @@ interface TabConfig {
 /**
 * 应用配置类型
 */
-interface AppConfig {
+export interface AppConfig {
  tabs: TabConfig[]
  visibleTabs: string[]
  defaultTab: string
@@ -44,8 +44,7 @@ export const useConfigStore = defineStore('config', () => {

    if (!tabs?.length) {
      return [
-        { key: 'file-system', title: '文件管理' },
-        { key: 'db-cli', title: '数据库' }
+        { key: 'file-system', title: '文件管理' }
      ]
    }

@@ -93,8 +92,8 @@ export const useConfigStore = defineStore('config', () => {
      const { tabs = [], visibleTabs = [], defaultTab = 'file-system' } = result.data

      // 一级 Tab 只有文件管理和数据库，其他功能（Markdown、版本历史）不作为独立 Tab
-      const allKeys = ['file-system', 'db-cli']
-      const tabTitles: Record<string, string> = { 'file-system': '文件管理', 'db-cli': '数据库' }
+      const allKeys = ['file-system']
+      const tabTitles: Record<string, string> = { 'file-system': '文件管理' }
      const mergedTabs = allKeys.map(key => tabs.find(t => t.key === key) || { key, title: tabTitles[key] || key, enabled: true })
      const mergedVisible = visibleTabs.length
        ? visibleTabs.filter(k => allKeys.includes(k))
@@ -119,10 +118,9 @@ export const useConfigStore = defineStore('config', () => {
  const useDefaultConfig = () => {
    appConfig.value = {
      tabs: [
-        { key: 'file-system', title: '文件管理', visible: true, enabled: true },
-        { key: 'db-cli', title: '数据库', visible: true, enhanced: true }
+        { key: 'file-system', title: '文件管理', visible: true, enabled: true }
      ],
-      visibleTabs: ['file-system', 'db-cli'],
+      visibleTabs: ['file-system'],
      defaultTab: 'file-system'
    }
  }
--- a/web/src/stores/connection.ts
+++ b/web/src/stores/connection.ts
@@ -0,0 +1,44 @@
+/**
+ * 连接状态 Pinia Store
+ */
+
+import { defineStore } from 'pinia'
+import { ref, computed } from 'vue'
+import { connectionManager, type ConnectionProfile, type ConnectionState } from '@/api/connection-manager'
+
+export const useConnectionStore = defineStore('connection', () => {
+  const state = ref<ConnectionState>(connectionManager.state)
+  const activeProfile = ref<ConnectionProfile | null>(connectionManager.activeProfile)
+
+  connectionManager.onStateChange((s) => { state.value = s })
+
+  const isConnected = computed(() => state.value === 'connected')
+  const isRemote = computed(() => connectionManager.isRemote())
+  const fileServerBaseURL = computed(() => connectionManager.getFileServerBaseURL())
+
+  function connect(id: string) {
+    connectionManager.connect(id)
+    activeProfile.value = connectionManager.activeProfile
+  }
+
+  function disconnect() {
+    connectionManager.disconnect()
+    activeProfile.value = connectionManager.activeProfile
+  }
+
+  function refresh() {
+    activeProfile.value = connectionManager.activeProfile
+    state.value = connectionManager.state
+  }
+
+  return {
+    state,
+    activeProfile,
+    isConnected,
+    isRemote,
+    fileServerBaseURL,
+    connect,
+    disconnect,
+    refresh,
+  }
+})
--- a/web/src/types/file-system.ts
+++ b/web/src/types/file-system.ts
@@ -115,6 +115,8 @@ export interface ToolbarConfig {
  sortBy: string
  /** 排序方向 */
  sortOrder: string
+  /** 搜索关键词 */
+  searchKeyword: string
 }

 /**
@@ -199,6 +201,8 @@ export interface FileEditorPanelConfig {
  currentFileExtension: string
  /** 是否为二进制文件 */
  isBinaryFile: boolean
+  /** 文件修改时间（用于检测外部变更） */
+  fileMtime: string
 }

 /**
--- a/web/src/utils/codemirrorExports.js
+++ b/web/src/utils/codemirrorExports.js
@@ -10,4 +10,7 @@ export { defaultKeymap, history, historyKeymap } from '@codemirror/commands'
 export { bracketMatching, defaultHighlightStyle, syntaxHighlighting } from '@codemirror/language'
 export { oneDark } from '@codemirror/theme-one-dark'

+// 查找替换
+export { openSearchPanel, closeSearchPanel, search, searchKeymap, SearchQuery } from '@codemirror/search'
+
 // 语言包通过 codeMirrorLoader 动态导入，避免全量打包
--- a/web/src/utils/constants.js
+++ b/web/src/utils/constants.js
@@ -30,6 +30,7 @@ export const STORAGE_KEYS = {
    SORT: 'app-filesystem-sort', // 排序状态
    COL_SETTINGS: 'app-filesystem-col-settings', // 列配置（显隐+顺序）
    SHOW_HEADER: 'app-filesystem-show-header', // 表头显隐
+    LAST_OPENED_FILE: 'app-filesystem-last-opened-file', // 上次打开的文件路径
  },

  // 设备测试模块
@@ -154,6 +155,7 @@ export const FILE_ICONS = {
  RUBY: '💎',
  DART: '🎯',
  DOCKERFILE: '🐳',
+  VUE: '💚',

  // 数据库
  DATABASE: '🗄️',
@@ -270,6 +272,8 @@ const initIconMap = () => {
    'dart': FILE_ICONS.DART,
    // Dockerfile
    'dockerfile': FILE_ICONS.DOCKERFILE,
+    // Vue
+    'vue': FILE_ICONS.VUE,
  }

  Object.keys(langIcons).forEach(ext => FILE_ICON_MAP.set(ext, langIcons[ext]))
--- a/web/src/utils/database-error.ts
+++ b/web/src/utils/database-error.ts
@@ -1,114 +0,0 @@
-/**
- * 数据库错误提示工具
- * 将技术性错误信息转换为用户友好的提示
- */
-
-/**
- * 解析数据库连接错误，返回友好的提示信息
- */
-export function getFriendlyDatabaseError(error: Error | string | unknown): string {
-  const errorMsg = typeof error === 'string' ? error : error instanceof Error ? error.message : String(error)
-
-  // MySQL 错误码处理
-  if (errorMsg.includes('Error 1045') || errorMsg.includes('28000')) {
-    return '用户名或密码错误，请检查连接配置'
-  }
-
-  if (errorMsg.includes('Error 2002') || errorMsg.includes('Error 2003')) {
-    return '无法连接到数据库服务器，请检查主机地址和端口是否正确'
-  }
-
-  if (errorMsg.includes('Error 2003')) {
-    return '无法连接到 MySQL 服务器，请检查：\n1. 主机地址和端口是否正确\n2. MySQL 服务是否已启动\n3. 防火墙是否允许连接'
-  }
-
-  if (errorMsg.includes('Error 1045') || errorMsg.includes('Access denied')) {
-    return '认证失败，请检查：\n1. 用户名是否正确\n2. 密码是否正确\n3. 用户是否有访问权限'
-  }
-
-  if (errorMsg.includes('Error 1130') || errorMsg.includes('host is not allowed')) {
-    return '当前 IP 不被允许连接，请检查 MySQL 用户的主机访问权限配置'
-  }
-
-  if (errorMsg.includes('Error 10061') || errorMsg.includes('Connection refused')) {
-    return '连接被拒绝，请检查：\n1. 端口是否正确\n2. 数据库服务是否已启动'
-  }
-
-  if (errorMsg.includes('Error 10060') || errorMsg.includes('timeout')) {
-    return '连接超时，请检查：\n1. 网络连接是否正常\n2. 主机地址是否正确\n3. 防火墙设置'
-  }
-
-  if (errorMsg.includes('No connection') || errorMsg.includes('closed')) {
-    return '数据库连接已断开，请尝试重新连接'
-  }
-
-  // MongoDB 错误处理
-  if (errorMsg.includes('Authentication failed')) {
-    return 'MongoDB 认证失败，请检查用户名和密码'
-  }
-
-  if (errorMsg.includes('connection refused') || errorMsg.includes('ECONNREFUSED')) {
-    return '无法连接到 MongoDB 服务器，请检查服务是否已启动'
-  }
-
-  if (errorMsg.includes('ENOTFOUND') || errorMsg.includes('no such host')) {
-    return '主机地址无法解析，请检查主机名是否正确'
-  }
-
-  // Redis 错误处理
-  if (errorMsg.includes('NOAUTH')) {
-    return 'Redis 需要密码认证'
-  }
-
-  if (errorMsg.includes('WRONGPASS')) {
-    return 'Redis 密码错误'
-  }
-
-  if (errorMsg.includes('connection')) {
-    return '无法连接到 Redis 服务器，请检查：\n1. 主机地址和端口是否正确\n2. Redis 服务是否已启动'
-  }
-
-  // 网络相关
-  if (errorMsg.includes('network') || errorMsg.includes('ENETUNREACH')) {
-    return '网络连接失败，请检查网络设置'
-  }
-
-  // 通用错误
-  if (errorMsg.includes('获取 MySQL 客户端失败')) {
-    return '数据库连接初始化失败，请检查连接配置'
-  }
-
-  if (errorMsg.includes('连接.*失败')) {
-    return '数据库连接失败，请检查连接配置'
-  }
-
-  // 返回原始错误信息（去除技术性前缀）
-  const friendly = errorMsg
-    .replace(/^获取 MySQL 客户端失败:\s*/, '')
-    .replace(/^连接 MySQL 失败:\s*/, '')
-    .replace(/^连接 MongoDB 失败:\s*/, '')
-    .replace(/^连接 Redis 失败:\s*/, '')
-    .replace(/^Error \d+:\s*/, '')
-
-  return friendly || '未知错误，请检查连接配置'
-}
-
-/**
- * 获取连接失败的友好提示
- */
-export function getConnectionFailedTip(error: Error | string | unknown, dbType: string = 'mysql'): string {
-  const friendlyError = getFriendlyDatabaseError(error)
-  const dbTypeName = dbType === 'mysql' ? 'MySQL' : dbType === 'mongo' ? 'MongoDB' : 'Redis'
-
-  return `${dbTypeName} 连接失败：${friendlyError}`
-}
-
-/**
- * 获取加载数据失败的友好提示
- */
-export function getLoadFailedTip(error: Error | string | unknown, loadType: 'databases' | 'tables' | 'keys'): string {
-  const friendlyError = getFriendlyDatabaseError(error)
-  const typeText = loadType === 'databases' ? '数据库列表' : loadType === 'tables' ? '表列表' : '键列表'
-
-  return `加载${typeText}失败：${friendlyError}`
-}
--- a/web/src/utils/fileUtils.js
+++ b/web/src/utils/fileUtils.js
@@ -38,6 +38,21 @@ export const escapeHtml = (str) => {
    .replace(/'/g, '&#039;')
 }

+/**
+ * 轻量 HTML 消毒（用于渲染远程 Markdown 等不可信 HTML 片段）
+ * 移除 script/iframe/object/embed 标签和 on* 事件属性
+ */
+export const sanitizeHtml = (html) => {
+  if (!html) return ''
+  return String(html)
+    .replace(/<script\b[^<]*(?:<\/script>|$)/gi, '')
+    .replace(/<iframe\b[^<]*(?:<\/iframe>|$)/gi, '')
+    .replace(/<object\b[^<]*(?:<\/object>|$)/gi, '')
+    .replace(/<embed\b[^>]*\/?>/gi, '')
+    .replace(/\s+on\w+\s*=\s*["'][^"']*["']/gi, '')
+    .replace(/\s+on\w+\s*=\s*[^\s>]*/gi, '')
+}
+
 /**
 * 获取文件扩展名（路径安全）
 * @param {string} path - 文件路径
--- a/web/src/utils/markedExtensions.ts
+++ b/web/src/utils/markedExtensions.ts
@@ -100,6 +100,80 @@ renderer.heading = function(token: any) {
  </h${depth}>`
 }

+// ========== 图片相对路径转换支持 ==========
+// 当前 Markdown 文件所在目录（由调用方在渲染前设置）
+let _currentFileDir: string = ''
+// 文件服务器 Base URL（由调用方在渲染前设置）
+let _fileServerBase: string = 'http://localhost:8073/localfs'
+
+/**
+ * 设置当前 Markdown 文件所在目录（用于图片相对路径→文件服务器 URL 转换）
+ * @param dir 文件所在目录的绝对路径，如 "D:/docs" 或 "/"（根目录）
+ */
+export function setCurrentFileDir(dir: string): void {
+  _currentFileDir = dir
+}
+
+/** 获取当前设置的文件目录 */
+export function getCurrentFileDir(): string {
+  return _currentFileDir
+}
+
+/**
+ * 设置文件服务器 Base URL（用于图片相对路径转换）
+ * @param base 完整的 base URL 前缀，如 "http://localhost:8073/localfs" 或 "https://host:port/api/v1/proxy/localfs"
+ */
+export function setFileServerBase(base: string): void {
+  _fileServerBase = base
+}
+
+/**
+ * 将相对路径图片 src 解析为文件服务器 URL
+ * - 绝对路径（Windows: D:/...、Unix: /usr/...）、网络URL、data URI → 不转换
+ * - 相对路径 → 基于当前文件目录解析为绝对路径，再编码为文件服务器 URL
+ */
+function resolveImageUrl(src: string, fileServerBase: string): string {
+  if (!src) return src
+  // 不转换：绝对路径（Windows 盘符）、网络协议、锚点、data URI
+  if (/^(?:[a-zA-Z]:[/\\]|\/(?:[^/]|$)|https?:|ftp:|data:|#)/i.test(src)) return src
+
+  // 解析相对路径（处理 ../ 和 ./）
+  const dir = _currentFileDir || '/'
+  const sep = dir.includes('\\') ? '\\' : '/'
+  let resolved = normalizeRelativePath(dir, src, sep)
+
+  // 编码路径（保留 / 分隔符）
+  const encoded = encodeURIComponent(resolved).replace(/%2F/gi, '/').replace(/%5C/gi, '\\')
+  return `${fileServerBase}/${encoded}`
+}
+
+/**
+ * 规范化相对路径，处理 .. 和 . 段
+ */
+function normalizeRelativePath(base: string, relative: string, sep: string): string {
+  // 确保基础路径不以分隔符结尾
+  let baseNormalized = base.replace(/[\\/]+$/, '')
+  if (!baseNormalized) baseNormalized = sep === '/' ? '/' : 'C:\\'
+
+  const baseParts = baseNormalized.split(sep).filter(Boolean)
+  const relParts = relative.split(/[\\/]/).filter(Boolean)
+
+  for (const part of relParts) {
+    if (part === '..') {
+      baseParts.pop() // 向上一级
+    } else if (part !== '.') {
+      baseParts.push(part)
+    }
+  }
+
+  // 重建路径：Windows 绝对路径保留盘符前缀
+  if (/^[a-zA-Z]:$/i.test(baseNormalized.split(sep)[0] || '')) {
+    return baseParts.join(sep)
+  }
+  // Unix 风格：以 / 开头
+  return sep + baseParts.join(sep)
+}
+
 // 判断是否为本地文件链接（相对路径或本地绝对路径）
 const isLocalFileLink = (href: string): boolean => {
  if (!href) return false
@@ -108,6 +182,23 @@ const isLocalFileLink = (href: string): boolean => {
  return true
 }

+// 自定义图片渲染器 - 转换相对路径为文件服务器 URL
+renderer.image = function(token: any) {
+  const src = token.href || ''
+  const title = token.title || ''
+  const alt = token.text || ''
+  const titleAttr = title ? ` title="${title}"` : ''
+
+  // 判断是否需要转换（仅处理相对路径，且当前目录已设置）
+  if (_currentFileDir && !/^(?:[a-zA-Z]:[/\\]|\/(?:[^/]|$)|https?:|ftp:|data:|#)/i.test(src)) {
+    const resolvedSrc = resolveImageUrl(src, _fileServerBase)
+    return `<img src="${resolvedSrc}" alt="${alt}"${titleAttr}>`
+  }
+
+  // 默认渲染（绝对路径 / 网络 URL / data URI / 未设置目录时原样输出）
+  return `<img src="${src}" alt="${alt}"${titleAttr}>`
+}
+
 // 自定义链接渲染器 - 支持本地文件链接
 renderer.link = function(token: any) {
  const href = token.href || ''
@@ -126,7 +217,7 @@ renderer.link = function(token: any) {
  return `<a href="${href}" target="_blank" rel="noopener noreferrer"${titleAttr}>${text}</a>`
 }

-marked.use({ renderer, breaks: true, gfm: true })
+marked.use({ renderer, breaks: true, gfm: true, async: false })

 export { marked }

--- a/web/src/views/db-cli/components/ConnectionForm.vue
+++ b/web/src/views/db-cli/components/ConnectionForm.vue
@@ -1,713 +0,0 @@
-<template>
-  <a-modal
-      v-model:visible="visible"
-      title="数据库连接配置"
-      width="600px"
-      :body-style="{ padding: '16px 20px' }"
-      @cancel="handleCancel"
-  >
-    <!-- 错误提示区域 -->
-    <a-alert
-        v-if="errorMessage"
-        type="error"
-        show-icon
-        closable
-        @close="errorMessage = ''"
-        class="error-alert"
-    >
-      {{ errorMessage }}
-    </a-alert>
-
-    <a-form :model="form" :rules="rules" ref="formRef" layout="horizontal" :label-col-props="{ span: 6 }"
-            :wrapper-col-props="{ span: 18 }" size="small">
-      <a-form-item label="连接名称" field="name">
-        <a-input v-model="form.name" placeholder="请输入连接名称" size="small"/>
-      </a-form-item>
-      <a-form-item label="数据库类型" field="type">
-        <a-select v-model="form.type" placeholder="请选择数据库类型" @change="handleTypeChange" size="small">
-          <a-option value="mysql">MySQL</a-option>
-          <a-option value="redis">Redis</a-option>
-          <a-option value="mongo">MongoDB</a-option>
-        </a-select>
-      </a-form-item>
-      <a-form-item label="主机地址" field="host">
-        <a-input v-model="form.host" placeholder="请输入主机地址" size="small"/>
-      </a-form-item>
-      <a-form-item label="端口" field="port">
-        <a-input-number v-model="form.port" :min="1" :max="65535" placeholder="请输入端口" style="width: 100%"
-                        size="small"/>
-      </a-form-item>
-      <a-form-item label="用户名" field="username" v-if="form.type !== 'redis'">
-        <a-input v-model="form.username" placeholder="请输入用户名" size="small"/>
-      </a-form-item>
-      <a-form-item label="密码" field="password">
-        <div v-if="props.connectionId && !isPasswordChanged" class="password-display">
-          <a-input
-              value="已保存的密码"
-              disabled
-              class="password-input"
-              size="small"
-          />
-          <a-button type="text" size="mini" @click="isPasswordChanged = true">
-            修改密码
-          </a-button>
-        </div>
-        <a-input-password
-            v-else
-            v-model="form.password"
-            :placeholder="getPasswordPlaceholder()"
-            size="small"
-        />
-      </a-form-item>
-      <a-form-item :label="form.type === 'redis' ? '数据库编号' : '数据库名'" field="database">
-        <a-input v-model="form.database"
-                 :placeholder="form.type === 'redis' ? 'Redis DB 编号 (0-15，默认为0)' : '可选，留空则连接所有数据库'"
-                 :max-length="100"
-                 size="small"/>
-      </a-form-item>
-
-      <!-- 数据库过滤选项（仅 MySQL 和 MongoDB） -->
-      <template v-if="form.type === 'mysql' || form.type === 'mongo'">
-        <a-form-item label="可见数据库" field="visibleDatabases">
-          <div class="database-list-container">
-            <!-- 顶部工具栏 -->
-            <div class="list-toolbar">
-              <a-button
-                type="outline"
-                size="small"
-                @click="loadAllDatabases"
-                :loading="loadingDatabases"
-                :disabled="!canLoadDatabases"
-              >
-                <template #icon>
-                  <icon-refresh />
-                </template>
-                {{ allDatabases.length > 0 ? '重新加载' : '加载数据库列表' }}
-              </a-button>
-
-              <template v-if="allDatabases.length > 0">
-                <div class="toolbar-stats">
-                  已选 {{ selectedDatabases.length }} / {{ allDatabases.length }}
-                </div>
-                <a-button size="small" @click="handleSelectAll(true)">全选</a-button>
-                <a-button size="small" @click="handleInvertSelection">反选</a-button>
-                <a-button size="small" @click="handleSelectAll(false)">清空</a-button>
-              </template>
-            </div>
-
-            <!-- 空状态 -->
-            <div v-if="!loadingDatabases && allDatabases.length === 0" class="list-empty">
-              <icon-storage />
-              <span>点击上方按钮加载数据库列表</span>
-            </div>
-
-            <!-- 数据库列表（复选框） -->
-            <div v-else class="database-checkbox-list">
-              <div
-                v-for="db in allDatabases"
-                :key="db"
-                class="database-checkbox-item"
-              >
-                <a-checkbox
-                  :model-value="selectedDatabases.includes(db)"
-                  :disabled="loadingDatabases"
-                  @change="(checked: boolean) => toggleDatabase(db, checked)"
-                >
-                  {{ db }}
-                </a-checkbox>
-              </div>
-            </div>
-
-            <!-- 提示信息 -->
-            <div v-if="allDatabases.length > 0" class="list-tip">
-              <icon-info-circle />
-              未选择任何数据库时，将展示所有数据库
-            </div>
-          </div>
-        </a-form-item>
-      </template>
-      
-      <!-- MongoDB 专用选项 -->
-      <template v-if="form.type === 'mongo'">
-        <a-form-item label="认证数据库" field="options.authSource">
-          <a-input v-model="optionsForm.authSource" placeholder="留空则使用 admin" size="small"/>
-          <template #extra>
-            <span class="form-item-extra">MongoDB 用户所在的数据库，通常为 admin（可选）</span>
-          </template>
-        </a-form-item>
-      </template>
-    </a-form>
-    <template #footer>
-      <a-space size="small">
-        <a-button @click="handleTest" :loading="testing" size="small">测试连接</a-button>
-        <a-button @click="handleCancel" size="small">取消</a-button>
-        <a-button type="primary" @click="handleSubmit" :loading="saving" size="small">保存</a-button>
-      </a-space>
-    </template>
-  </a-modal>
-</template>
-
-<script setup lang="ts">
-import {reactive, ref, watch, computed, nextTick} from 'vue'
-import {Message} from '@arco-design/web-vue'
-import {
-  IconCheckCircle,
-  IconClose,
-  IconInfoCircle,
-  IconRefresh,
-  IconStorage
-} from '@arco-design/web-vue/es/icon'
-import {
-  ListDbConnections,
-  SaveDbConnection
-} from '../../../wailsjs/wailsjs/go/main/App'
-import { getConnectionFailedTip, getLoadFailedTip } from '@/utils/database-error'
-import { useVisibleDatabases } from '@/composables/useVisibleDatabases'
-
-// 使用 defineModel 简化 v-model:visible 双向绑定（Vue 3.5+）
-const visible = defineModel('visible', { type: Boolean, default: false })
-
-// 使用 TypeScript 泛型语法（Vue 3.5+）
-const props = defineProps<{
-  connectionId?: number | null
-}>()
-
-const emit = defineEmits<{
-  success: []
-}>()
-
-const formRef = ref<any>(null)
-const saving = ref(false)
-const testing = ref(false)
-const errorMessage = ref('')
-// 是否修改密码（编辑模式下）
-const isPasswordChanged = ref(false)
-
-// 数据库过滤相关
-const { parse: parseVisibleDatabases, filter: filterVisibleDatabases } = useVisibleDatabases()
-const loadingDatabases = ref(false)
-const allDatabases = ref<string[]>([])
-const selectedDatabases = ref<string[]>([])
-
-// 是否可以加载数据库列表
-const canLoadDatabases = computed(() =>
-  !!(form.host && form.port && form.username && (form.password || props.connectionId))
-)
-
-const form = reactive({
-  name: '',
-  type: 'mysql',
-  host: '127.0.0.1',
-  port: 3306,
-  username: '',
-  password: '',
-  database: '',
-  options: '',
-  visibleDatabases: ''
-})
-
-// 选项表单（用于表单输入）
-const optionsForm = reactive({
-  authSource: ''
-})
-
-// 将 options JSON 字符串解析为 optionsForm
-const parseOptionsToForm = (optionsStr: string) => {
-  if (!optionsStr || optionsStr.trim() === '') {
-    optionsForm.authSource = ''
-    return
-  }
-  
-  try {
-    const opts = JSON.parse(optionsStr)
-    optionsForm.authSource = opts.authSource || ''
-    // 认证机制使用自动检测，不需要从选项读取
-  } catch (error) {
-    console.warn('解析 Options JSON 失败:', error)
-    // 解析失败时，清空表单选项
-    optionsForm.authSource = ''
-  }
-}
-
-// 将 optionsForm 和 form.options 合并为 JSON 字符串
-const mergeOptionsToJson = (): string => {
-  let customOptions: any = {}
-  
-  // 先解析已有的 JSON（可能包含其他自定义选项）
-  if (form.options && form.options.trim() !== '') {
-    try {
-      customOptions = JSON.parse(form.options)
-    } catch (error) {
-      console.warn('解析自定义 Options JSON 失败:', error)
-    }
-  }
-  
-  // 根据数据库类型合并表单选项（仅 MongoDB）
-  if (form.type === 'mongo') {
-    // 只有认证数据库不为空时才添加
-    if (optionsForm.authSource && optionsForm.authSource.trim() !== '') {
-      customOptions.authSource = optionsForm.authSource.trim()
-    }
-    // 认证机制使用自动检测，不需要添加到选项
-  }
-  
-  // 如果没有任何选项，返回空字符串
-  if (Object.keys(customOptions).length === 0) {
-    return ''
-  }
-  
-  return JSON.stringify(customOptions)
-}
-
-// 表单验证规则
-const rules = {
-  name: [
-    {required: true, message: '请输入连接名称'},
-    {maxLength: 100, message: '连接名称长度不能超过100个字符'}
-  ],
-  type: [{required: true, message: '请选择数据库类型'}],
-  host: [
-    {required: true, message: '请输入主机地址'},
-    {maxLength: 255, message: '主机地址长度不能超过255个字符'}
-  ],
-  port: [
-    {required: true, message: '请输入端口'},
-    {
-      validator: (value, callback) => {
-        if (!value || value < 1 || value > 65535) {
-          callback('端口号必须在1-65535之间')
-        } else {
-          callback()
-        }
-      }
-    }
-  ],
-  database: [
-    {
-      validator: (value, callback) => {
-        // MySQL 类型时数据库名为可选（允许为空）
-        // MongoDB 和 Redis 也为可选
-        callback()
-      }
-    }
-  ]
-}
-
-// 获取密码输入框的占位符
-const getPasswordPlaceholder = () => {
-  if (props.connectionId) return '请输入新密码'
-  const placeholders = { redis: '可选，留空则无密码连接', mongo: '可选，留空则无认证连接' }
-  return placeholders[form.type] || '请输入密码'
-}
-
-// 监听类型变化，设置默认端口、主机和用户名
-const handleTypeChange = (type) => {
-  // 如果主机为空，设置默认值
-  if (!form.host || form.host.trim() === '') {
-    form.host = '127.0.0.1'
-  }
-
-  // 根据类型设置默认端口和用户名
-  switch (type) {
-    case 'mysql':
-      form.port = 3306
-      if (!form.username) {
-        form.username = 'root'
-      }
-      // 清空 MongoDB 专用选项
-      optionsForm.authSource = ''
-      form.options = ''
-      break
-    case 'redis':
-      form.port = 6379
-      form.username = '' // Redis 不需要用户名
-      if (!form.database) {
-        form.database = '0' // Redis 默认 DB 0
-      }
-      // 清空其他数据库的选项
-      optionsForm.authSource = ''
-      form.options = ''
-      break
-    case 'mongo':
-    case 'mongodb':
-      form.port = 27017
-      if (!form.username) {
-        form.username = 'admin' // MongoDB 常用默认用户名
-      }
-      break
-  }
-  
-  // 类型变化时，同步更新 options JSON
-  form.options = mergeOptionsToJson()
-}
-
-// 加载连接详情
-const loadConnection = async () => {
-  if (!props.connectionId) {
-    resetForm()
-    // 新建模式：不自动加载，等用户手动点击
-    return
-  }
-
-  isLoading.value = true
-  try {
-    if (!(window as any).go?.main?.App?.ListDbConnections) {
-      return
-    }
-
-    const connections = await (window as any).go.main.App.ListDbConnections()
-    const conn = connections.find(c => c.id === props.connectionId)
-    if (conn) {
-      form.name = conn.name
-      form.type = conn.type
-      form.host = conn.host || '127.0.0.1'
-      form.port = conn.port || (conn.type === 'mysql' ? 3306 : conn.type === 'redis' ? 6379 : 27017)
-      form.username = conn.username || ''
-      form.database = conn.database || ''
-      // 先解析 options 到表单
-      parseOptionsToForm(conn.options || '')
-      // 然后设置 form.options（这样不会触发 watch）
-      form.options = conn.options || ''
-      // 设置可见数据库
-      form.visibleDatabases = conn.visible_databases || ''
-      // 编辑模式下，默认不修改密码
-      form.password = ''
-      isPasswordChanged.value = false
-
-      // 恢复数据库选择
-      selectedDatabases.value = parseVisibleDatabases(conn.visible_databases || null)
-
-      // 编辑模式：自动加载数据库列表
-      nextTick(() => {
-        loadAllDatabases()
-      })
-    }
-  } catch (error) {
-    console.error('加载连接详情失败:', error)
-  } finally {
-    isLoading.value = false
-  }
-}
-
-// 获取要使用的密码（编辑模式下未修改密码时为空）
-const getPasswordToUse = () =>
-  (props.connectionId && !isPasswordChanged.value) ? '' : (form.password || '')
-
-// 表单验证（返回 true 表示验证通过）
-const validateForm = async () => {
-  if (!formRef.value) {
-    console.error('formRef 未初始化')
-    return false
-  }
-  errorMessage.value = ''
-  try {
-    await formRef.value.validate()
-    return true
-  } catch (error) {
-    const errorMsg = error?.fields?.[Object.keys(error.fields)[0]]?.[0]?.message || '请检查表单填写是否正确'
-    errorMessage.value = errorMsg
-    Message.warning(errorMsg)
-    return false
-  }
-}
-
-// 重置表单
-const resetForm = () => {
-  form.name = ''
-  form.type = 'mysql'
-  form.host = '127.0.0.1'
-  form.port = 3306
-  form.username = 'root' // MySQL 默认用户名
-  form.password = ''
-  form.database = ''
-  form.options = ''
-  form.visibleDatabases = ''
-  optionsForm.authSource = ''
-  isPasswordChanged.value = false
-  loadingDatabases.value = false
-  allDatabases.value = []
-  selectedDatabases.value = []
-}
-
-// 测试连接（不保存数据）
-const handleTest = async () => {
-  if (!(await validateForm())) return
-
-  // 检查 Go 后端是否可用
-  if (!(window as any).go?.main?.App) {
-    const msg = 'Go 后端未就绪，请确保应用已启动'
-    errorMessage.value = msg
-    Message.error(msg)
-    return
-  }
-
-  testing.value = true
-  try {
-    await (window as any).go.main.App.TestDbConnectionWithParams({
-      id: props.connectionId || 0,
-      type: form.type,
-      host: form.host,
-      port: form.port,
-      username: form.username || '',
-      password: getPasswordToUse(),
-      database: form.database || '',
-      options: mergeOptionsToJson()
-    })
-    Message.success('连接测试成功')
-    errorMessage.value = ''
-  } catch (error) {
-    const friendlyMsg = getConnectionFailedTip(error, form.type)
-    errorMessage.value = friendlyMsg
-    Message.error(friendlyMsg)
-  } finally {
-    testing.value = false
-  }
-}
-
-// 提交表单
-const handleSubmit = async () => {
-  if (!(await validateForm())) return
-
-  // 检查 Go 后端是否可用
-  if (!(window as any).go?.main?.App) {
-    const msg = 'Go 后端未就绪，请确保应用已启动'
-    errorMessage.value = msg
-    Message.error(msg)
-    return
-  }
-
-  saving.value = true
-  try {
-    await (window as any).go.main.App.SaveDbConnection({
-      id: props.connectionId || 0,
-      name: form.name,
-      type: form.type,
-      host: form.host,
-      port: form.port,
-      username: form.username || '',
-      password: getPasswordToUse(),
-      database: form.database || '',
-      options: mergeOptionsToJson(),
-      visible_databases: form.visibleDatabases || ''
-    })
-    Message.success(props.connectionId ? '更新成功' : '保存成功')
-    errorMessage.value = ''
-    emit('success')
-    visible.value = false
-  } catch (error) {
-    const errorMsg = error?.message || error?.toString() || '未知错误'
-    errorMessage.value = '保存失败: ' + errorMsg
-    Message.error('保存失败: ' + errorMsg)
-  } finally {
-    saving.value = false
-  }
-}
-
-// 取消
-const handleCancel = () => {
-  errorMessage.value = ''
-  visible.value = false
-  resetForm()
-}
-
-// 是否正在加载连接（用于避免加载时触发 watch）
-const isLoading = ref(false)
-
-// 监听 optionsForm 变化，自动同步到 form.options（仅 MongoDB）
-watch(
-  () => [optionsForm.authSource, form.type],
-  () => {
-    // 如果正在加载，不触发更新
-    if (isLoading.value) {
-      return
-    }
-    // 仅 MongoDB 需要同步选项
-    if (visible.value && form.type === 'mongo') {
-      form.options = mergeOptionsToJson()
-    }
-  },
-  { deep: true }
-)
-
-// 加载全部数据库列表
-const loadAllDatabases = async () => {
-  if (!canLoadDatabases.value) {
-    Message.warning('请先填写连接信息')
-    return
-  }
-
-  loadingDatabases.value = true
-  try {
-    const databases = await (window as any).go.main.App.LoadAllDatabases({
-      id: props.connectionId || 0,
-      type: form.type,
-      host: form.host,
-      port: form.port,
-      username: form.username || '',
-      password: getPasswordToUse(),
-      database: form.database || '',
-      options: mergeOptionsToJson()
-    })
-
-    allDatabases.value = databases || []
-
-    // 从已保存的 visibleDatabases 中恢复选择（使用 composable）
-    selectedDatabases.value = filterVisibleDatabases(databases, form.visibleDatabases || null)
-
-    Message.success(`成功加载 ${databases.length} 个数据库`)
-  } catch (error) {
-    Message.error(getLoadFailedTip(error, 'databases'))
-  } finally {
-    loadingDatabases.value = false
-  }
-}
-
-// 切换单个数据库选择
-const toggleDatabase = (dbName: string, checked: boolean) => {
-  const list = selectedDatabases.value
-  if (checked && !list.includes(dbName)) {
-    list.push(dbName)
-  } else if (!checked) {
-    selectedDatabases.value = list.filter(db => db !== dbName)
-  }
-}
-
-// 全选/全不选
-const handleSelectAll = (selectAll: boolean) => {
-  if (selectAll) {
-    selectedDatabases.value = [...allDatabases.value]
-  } else {
-    selectedDatabases.value = []
-  }
-}
-
-// 反选
-const handleInvertSelection = () => {
-  const selectedSet = new Set(selectedDatabases.value)
-  selectedDatabases.value = allDatabases.value.filter(db => !selectedSet.has(db))
-}
-
-// 监听数据库选择变化，同步到表单
-watch(selectedDatabases, (newVal) => {
-  if (newVal.length === 0) {
-    form.visibleDatabases = ''
-  } else {
-    form.visibleDatabases = JSON.stringify(newVal)
-  }
-}, { deep: true })
-
-// 监听 visible 变化
-watch(visible, (val) => {
-  if (val) {
-    errorMessage.value = ''
-    loadConnection()
-  } else {
-    errorMessage.value = ''
-    resetForm()
-  }
-})
-</script>
-
-<style scoped>
-.error-alert {
-  margin-bottom: 12px;
-}
-
-.password-display {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-}
-
-.password-input {
-  flex: 1;
-}
-
-.options-item {
-  margin-bottom: 8px;
-}
-
-.form-item-extra {
-  font-size: 12px;
-  color: var(--color-text-3);
-  margin-top: 4px;
-  display: block;
-}
-
-.database-list-container {
-  width: 100%;
-}
-
-/* 顶部工具栏 */
-.list-toolbar {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  margin-bottom: 12px;
-  flex-wrap: wrap;
-}
-
-.toolbar-stats {
-  font-size: 13px;
-  color: var(--color-text-2);
-  margin: 0 8px;
-}
-
-/* 空状态 */
-.list-empty {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  gap: 12px;
-  padding: 40px 20px;
-  color: var(--color-text-3);
-  font-size: 13px;
-}
-
-.list-empty svg {
-  font-size: 32px;
-}
-
-/* 复选框列表 */
-.database-checkbox-list {
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
-  gap: 8px;
-  max-height: 240px;
-  overflow-y: auto;
-  padding: 12px;
-  background: var(--color-fill-2);
-  border: 1px solid var(--color-border-2);
-  border-radius: 6px;
-}
-
-.database-checkbox-item {
-  display: flex;
-  align-items: center;
-}
-
-.database-checkbox-item :deep(.arco-checkbox) {
-  width: 100%;
-  font-size: 13px;
-}
-
-/* 底部提示 */
-.list-tip {
-  display: flex;
-  align-items: center;
-  gap: 6px;
-  margin-top: 8px;
-  padding: 8px 12px;
-  background: var(--color-fill-1);
-  border-radius: 4px;
-  font-size: 12px;
-  color: var(--color-text-3);
-}
-
-.list-tip svg {
-  color: var(--color-text-3);
-  font-size: 14px;
-}
-</style>
-
--- a/web/src/views/db-cli/components/ConnectionTree.vue
+++ b/web/src/views/db-cli/components/ConnectionTree.vue
--- a/web/src/views/db-cli/components/ContextMenu.vue
+++ b/web/src/views/db-cli/components/ContextMenu.vue
@@ -1,183 +0,0 @@
-<template>
-  <teleport to="body">
-    <div
-        v-if="visible"
-        class="context-menu-overlay"
-        @click="handleOverlayClick"
-        @contextmenu.prevent="handleOverlayClick"
-    >
-      <div
-          class="context-menu"
-          :style="{ left: `${position.x}px`, top: `${position.y}px` }"
-          @click.stop
-      >
-        <template v-for="(item, index) in processedItems" :key="item.key || index">
-          <div
-              v-if="item.divider"
-              class="context-menu-divider"
-          ></div>
-          <div
-              v-else
-              class="context-menu-item"
-              :class="{ disabled: item.disabled }"
-              @click="handleMenuItemClick(item)"
-          >
-            <span v-if="item.icon" class="context-menu-item-icon">
-              <component :is="item.icon"/>
-            </span>
-            <span class="context-menu-item-label">{{ item.label }}</span>
-          </div>
-        </template>
-      </div>
-    </div>
-  </teleport>
-</template>
-
-<script setup lang="ts">
-import { computed } from 'vue'
-import type { Component } from 'vue'
-
-/**
- * 菜单项配置
- */
-export interface MenuItem {
-  key: string
-  label: string
-  icon?: Component
-  disabled?: boolean
-  divider?: boolean
-  handler?: () => void
-}
-
-/**
- * 使用 defineModel 简化 v-model:visible 双向绑定（Vue 3.5+）
- */
-const visible = defineModel<boolean>('visible', { default: false })
-
-/**
- * Props
- */
-const props = defineProps<{
-  position: { x: number; y: number }
-  items: MenuItem[]
-}>()
-
-/**
- * Emits
- */
-const emit = defineEmits<{
-  'menu-item-click': [item: MenuItem]
-}>()
-
-/**
- * 点击遮罩层关闭菜单
- */
-const handleOverlayClick = () => {
-  visible.value = false
-}
-
-/**
- * 处理菜单项点击
- */
-const handleMenuItemClick = (item: MenuItem) => {
-  if (item.disabled) return
-  
-  emit('menu-item-click', item)
-  
-  if (item.handler) {
-    item.handler()
-  }
-  
-  // 点击后关闭菜单
-  visible.value = false
-}
-
-/**
- * 处理菜单项（处理分隔线）
- * divider: true 表示在该菜单项之后添加分隔线
- */
-const processedItems = computed(() => {
-  const result: MenuItem[] = []
-  
-  props.items.forEach((item, index) => {
-    // 添加菜单项本身（不包含 divider 标记）
-    const menuItem = { ...item }
-    const hasDivider = menuItem.divider
-    delete menuItem.divider // 移除 divider 标记，避免在渲染时被当作分隔线
-    
-    result.push(menuItem)
-    
-    // 如果该项标记了 divider，在其后添加分隔线
-    if (hasDivider) {
-      result.push({ 
-        key: `divider-${index}`, 
-        label: '', 
-        divider: true 
-      })
-    }
-  })
-  
-  return result
-})
-</script>
-
-<style scoped>
-.context-menu-overlay {
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  z-index: 9999;
-}
-
-.context-menu {
-  position: fixed;
-  min-width: 160px;
-  padding: 4px 0;
-  background: var(--color-bg-popup, #fff);
-  border: 1px solid var(--color-border-2, #e5e6eb);
-  border-radius: var(--border-radius-medium, 4px);
-  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
-  z-index: 10000;
-}
-
-.context-menu-item {
-  display: flex;
-  align-items: center;
-  padding: 6px 12px;
-  cursor: pointer;
-  color: var(--color-text-1, #1d2129);
-  font-size: 14px;
-  transition: background-color 0.2s;
-}
-
-.context-menu-item:hover:not(.disabled) {
-  background: var(--color-fill-2, #f2f3f5);
-}
-
-.context-menu-item.disabled {
-  color: var(--color-text-4, #c9cdd4);
-  cursor: not-allowed;
-}
-
-.context-menu-item-icon {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  width: 16px;
-  height: 16px;
-  margin-right: 8px;
-  font-size: 14px;
-}
-
-.context-menu-item-label {
-  flex: 1;
-}
-
-.context-menu-divider {
-  height: 1px;
-  margin: 4px 12px;
-  background: var(--color-border-2, #e5e6eb);
-}
-</style>
--- a/web/src/views/db-cli/components/MySQLCreate.vue
+++ b/web/src/views/db-cli/components/MySQLCreate.vue
@@ -1,529 +0,0 @@
-<template>
-  <div class="mysql-create">
-    <a-tabs 
-      v-model:active-key="activeTab" 
-      type="line"
-      class="create-tabs"
-    >
-      <!-- 基本信息 -->
-      <a-tab-pane key="basic" title="基本信息">
-        <div class="tab-content basic-info-content">
-          <a-form :model="formData" layout="vertical" :label-col-props="{ span: 6 }">
-            <a-row :gutter="16">
-              <a-col :span="12">
-                <a-form-item label="数据库" field="database">
-                  <a-input v-model="formData.database" disabled />
-                </a-form-item>
-              </a-col>
-              <a-col :span="12">
-                <a-form-item label="表名" field="tableName" :rules="[{ required: true, message: '请输入表名' }]">
-                  <a-input v-model="formData.tableName" placeholder="请输入表名" />
-                </a-form-item>
-              </a-col>
-            </a-row>
-            <a-row :gutter="16">
-              <a-col :span="12">
-                <a-form-item label="字符集" field="charset">
-                  <a-select v-model="formData.charset" placeholder="选择字符集">
-                    <a-option value="utf8mb4">utf8mb4</a-option>
-                    <a-option value="utf8">utf8</a-option>
-                    <a-option value="latin1">latin1</a-option>
-                  </a-select>
-                </a-form-item>
-              </a-col>
-              <a-col :span="12">
-                <a-form-item label="排序规则" field="collation">
-                  <a-select v-model="formData.collation" placeholder="选择排序规则">
-                    <a-option value="utf8mb4_general_ci">utf8mb4_general_ci</a-option>
-                    <a-option value="utf8mb4_unicode_ci">utf8mb4_unicode_ci</a-option>
-                    <a-option value="utf8_general_ci">utf8_general_ci</a-option>
-                    <a-option value="utf8_unicode_ci">utf8_unicode_ci</a-option>
-                  </a-select>
-                </a-form-item>
-              </a-col>
-            </a-row>
-          </a-form>
-        </div>
-      </a-tab-pane>
-
-      <!-- 字段列表 -->
-      <a-tab-pane key="fields" title="字段列表">
-        <div class="tab-content fields-content">
-          <MySQLFieldList
-            mode="create"
-            :fields="formData.fields"
-            @add-field="handleAddField"
-            @remove-field="handleRemoveField"
-            @move-field="handleMoveField"
-            @update-field="handleUpdateField"
-          />
-        </div>
-      </a-tab-pane>
-
-      <!-- 索引列表 -->
-      <a-tab-pane key="indexes" title="索引列表">
-        <div class="tab-content indexes-content">
-          <div class="section-header">
-            <a-button type="primary" size="small" @click="showIndexDialog">
-              <template #icon>
-                <icon-plus />
-              </template>
-              添加索引
-            </a-button>
-          </div>
-          <div v-if="formData.indexes.length === 0" class="empty-tip">
-            <a-empty description="暂无索引（可选）" :image="false" />
-          </div>
-          <a-table
-            v-else
-            :columns="indexColumns"
-            :data="formData.indexes"
-            :pagination="false"
-            size="small"
-            :bordered="true"
-          >
-            <template #unique="{ record }">
-              <a-tag :color="record.unique ? 'blue' : 'default'">
-                {{ record.unique ? '是' : '否' }}
-              </a-tag>
-            </template>
-            <template #fields="{ record }">
-              {{ record.fields.map((f: any) => f.name).join(', ') }}
-            </template>
-            <template #operations="{ record, rowIndex }">
-              <a-button type="text" size="small" status="danger" @click="removeIndex(rowIndex)">
-                <template #icon>
-                  <icon-delete />
-                </template>
-              </a-button>
-            </template>
-          </a-table>
-        </div>
-      </a-tab-pane>
-
-      <!-- SQL预览 -->
-      <a-tab-pane key="sql" title="SQL预览">
-        <div class="tab-content sql-preview-content">
-          <div class="sql-preview-header">
-            <a-button type="text" size="small" @click="copySQL">
-              <template #icon>
-                <icon-copy />
-              </template>
-              复制
-            </a-button>
-          </div>
-          <div class="sql-preview-wrapper">
-            <pre class="sql-code">{{ sqlPreview }}</pre>
-          </div>
-        </div>
-      </a-tab-pane>
-    </a-tabs>
-
-    <!-- 索引定义对话框 -->
-    <a-modal
-      v-model:visible="indexDialogVisible"
-      title="添加索引"
-      :width="600"
-      @ok="handleIndexDialogOk"
-      @cancel="handleIndexDialogCancel"
-    >
-      <a-form :model="indexForm" layout="vertical" ref="indexFormRef">
-        <a-form-item label="索引名" field="name" :rules="[{ required: true, message: '请输入索引名' }]">
-          <a-input v-model="indexForm.name" placeholder="请输入索引名" />
-        </a-form-item>
-        <a-form-item label="唯一索引" field="unique">
-          <a-checkbox v-model="indexForm.unique">唯一索引</a-checkbox>
-        </a-form-item>
-        <a-form-item label="索引字段" field="fields" :rules="[{ required: true, message: '请至少选择一个字段' }]">
-          <a-select
-            v-model="indexForm.fields"
-            mode="multiple"
-            placeholder="选择索引字段"
-            :max-tag-count="3"
-          >
-            <a-option
-              v-for="field in formData.fields"
-              :key="field.name"
-              :value="field.name"
-            >
-              {{ field.name }} ({{ field.type }}{{ field.length ? `(${field.length})` : '' }})
-            </a-option>
-          </a-select>
-        </a-form-item>
-      </a-form>
-    </a-modal>
-  </div>
-</template>
-
-<script setup lang="ts">
-import { ref, computed, reactive } from 'vue'
-import { Message } from '@arco-design/web-vue'
-import {
-  IconCopy
-} from '@arco-design/web-vue/es/icon'
-import MySQLFieldList from './MySQLFieldList.vue'
-
-// Props
-interface Props {
-  connectionId: number
-  database: string
-}
-
-const props = defineProps<Props>()
-
-// Emits
-const emit = defineEmits<{
-  (e: 'cancel'): void
-  (e: 'create', data: any): void
-}>()
-
-// 当前激活的 tab
-const activeTab = ref<string>('basic')
-
-// 表单数据
-const formData = reactive({
-  database: props.database,
-  tableName: '',
-  charset: 'utf8mb4',
-  collation: 'utf8mb4_general_ci',
-  fields: [] as any[],
-  indexes: [] as any[]
-})
-
-// SQL 预览
-const sqlPreview = computed(() => {
-  if (formData.fields.length === 0) {
-    return '-- 请先添加字段'
-  }
-  return generateSQL()
-})
-
-// 索引表格列
-const indexColumns = [
-  { title: '索引名', dataIndex: 'name', width: 150 },
-  { title: '唯一', dataIndex: 'unique', slotName: 'unique', width: 80 },
-  { title: '字段', slotName: 'fields', width: 200 },
-  { title: '操作', slotName: 'operations', width: 100, fixed: 'right' }
-]
-
-// 索引对话框
-const indexDialogVisible = ref(false)
-const indexFormRef = ref()
-const indexForm = reactive({
-  name: '',
-  unique: false,
-  fields: [] as string[]
-})
-
-// 字段列表事件处理
-const handleAddField = (field: any) => {
-  formData.fields.push(field)
-  // 自动切换到字段列表 tab
-  if (activeTab.value !== 'fields') {
-    activeTab.value = 'fields'
-  }
-}
-
-const handleUpdateField = (index: number, field: string, value: any) => {
-  if (formData.fields[index]) {
-    formData.fields[index] = { ...formData.fields[index], [field]: value }
-  }
-}
-
-const handleRemoveField = (index: number) => {
-  formData.fields.splice(index, 1)
-  // 同时移除相关索引
-  formData.indexes = formData.indexes.filter((idx: any) => {
-    return idx.fields.every((f: any) => {
-      const fieldName = typeof f === 'string' ? f : f.name
-      return fieldName !== formData.fields[index]?.name
-    })
-  })
-}
-
-const handleMoveField = (index: number, direction: 'up' | 'down') => {
-  if (direction === 'up' && index > 0) {
-    const temp = formData.fields[index]
-    formData.fields[index] = formData.fields[index - 1]
-    formData.fields[index - 1] = temp
-  } else if (direction === 'down' && index < formData.fields.length - 1) {
-    const temp = formData.fields[index]
-    formData.fields[index] = formData.fields[index + 1]
-    formData.fields[index + 1] = temp
-  }
-}
-
-const showIndexDialog = () => {
-  if (formData.fields.length === 0) {
-    Message.warning('请先添加字段')
-    return
-  }
-  // 重置表单
-  Object.assign(indexForm, {
-    name: '',
-    unique: false,
-    fields: []
-  })
-  indexDialogVisible.value = true
-}
-
-const handleIndexDialogOk = async () => {
-  try {
-    // 验证表单
-    await indexFormRef.value?.validate()
-
-    // 检查索引名是否重复
-    if (formData.indexes.some((idx: any) => idx.name === indexForm.name)) {
-      Message.error('索引名已存在')
-      return false // 阻止对话框关闭
-    }
-
-    // 添加索引（深拷贝避免引用问题）
-    const newIndex = {
-      name: indexForm.name,
-      unique: indexForm.unique,
-      fields: indexForm.fields.map((name: string) => ({ name, order: 'ASC' }))
-    }
-    
-    formData.indexes.push(newIndex)
-
-    Message.success('索引添加成功')
-    indexDialogVisible.value = false
-    
-    // 自动切换到索引列表 tab
-    if (activeTab.value !== 'indexes') {
-      activeTab.value = 'indexes'
-    }
-  } catch (error) {
-    // 表单验证失败时会抛出错误
-    console.error('索引表单验证失败:', error)
-    return false // 阻止对话框关闭
-  }
-}
-
-const handleIndexDialogCancel = () => {
-  indexDialogVisible.value = false
-}
-
-const removeIndex = (index: number) => {
-  formData.indexes.splice(index, 1)
-}
-
-// 复制 SQL
-const copySQL = async () => {
-  try {
-    await navigator.clipboard.writeText(sqlPreview.value)
-    Message.success('SQL已复制到剪贴板')
-  } catch (error) {
-    Message.error('复制失败')
-  }
-}
-
-// 验证表单
-const validate = (): boolean => {
-  if (!formData.tableName) {
-    Message.error('请输入表名')
-    return false
-  }
-
-  if (formData.fields.length === 0) {
-    Message.error('请至少添加一个字段')
-    return false
-  }
-
-  // 检查是否有主键
-  const hasPrimaryKey = formData.fields.some((f: any) => f.primaryKey)
-  if (!hasPrimaryKey) {
-    Message.warning('建议设置主键')
-  }
-
-  return true
-}
-
-// 转义 SQL 字符串（转义单引号）
-const escapeSQLString = (str: string): string => {
-  return str.replace(/'/g, "''")
-}
-
-// 生成 SQL
-const generateSQL = (): string => {
-  const fieldsSQL = formData.fields.map((field: any) => {
-    let sql = `\`${field.name}\` ${field.type}`
-    if (field.length) {
-      sql += `(${field.length})`
-    }
-    if (!field.nullable) {
-      sql += ' NOT NULL'
-    }
-    // 处理默认值
-    if (field.defaultValue !== null && field.defaultValue !== undefined) {
-      if (field.defaultValue === '') {
-        // 空字符串默认值
-        sql += ` DEFAULT ''`
-      } else {
-        // 转义单引号
-        const escapedDefault = escapeSQLString(String(field.defaultValue))
-        sql += ` DEFAULT '${escapedDefault}'`
-      }
-    }
-    if (field.autoIncrement) {
-      sql += ' AUTO_INCREMENT'
-    }
-    if (field.comment) {
-      // 转义注释中的单引号
-      const escapedComment = escapeSQLString(field.comment)
-      sql += ` COMMENT '${escapedComment}'`
-    }
-    return sql
-  }).join(',\n  ')
-
-  // 主键
-  const primaryKeys = formData.fields.filter((f: any) => f.primaryKey).map((f: any) => `\`${f.name}\``)
-  let primaryKeySQL = ''
-  if (primaryKeys.length > 0) {
-    primaryKeySQL = `,\n  PRIMARY KEY (${primaryKeys.join(', ')})`
-  }
-
-  // 索引
-  const indexesSQL = formData.indexes.map((idx: any) => {
-    const fields = idx.fields.map((f: any) => `\`${typeof f === 'string' ? f : f.name}\``).join(', ')
-    const unique = idx.unique ? 'UNIQUE ' : ''
-    return `  ${unique}KEY \`${idx.name}\` (${fields})`
-  }).join(',\n')
-
-  const sql = `CREATE TABLE \`${formData.database}\`.\`${formData.tableName}\` (
-  ${fieldsSQL}${primaryKeySQL}${indexesSQL ? ',\n' + indexesSQL : ''}
-) ENGINE=InnoDB DEFAULT CHARSET=${formData.charset} COLLATE=${formData.collation};`
-
-  return sql
-}
-
-// 暴露方法给父组件
-defineExpose({
-  validate,
-  generateSQL,
-  getFormData: () => formData
-})
-</script>
-
-<style scoped>
-.mysql-create {
-  height: 100%;
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
-}
-
-/* Tabs 容器 */
-.create-tabs {
-  flex: 1;
-  min-height: 0;
-  height: 100%;
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
-}
-
-.create-tabs :deep(.arco-tabs) {
-  height: 100%;
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
-}
-
-.create-tabs :deep(.arco-tabs-content) {
-  flex: 1;
-  min-height: 0;
-  overflow: hidden;
-}
-
-.create-tabs :deep(.arco-tabs-content-list) {
-  height: 100%;
-}
-
-.create-tabs :deep(.arco-tabs-content-item) {
-  height: 100%;
-  overflow: hidden;
-}
-
-/* Tab 内容通用样式 */
-.tab-content {
-  height: 100%;
-  display: flex;
-  flex-direction: column;
-  padding: var(--spacing-md, 12px);
-  overflow: hidden;
-  min-height: 0;
-}
-
-/* 基本信息内容 */
-.basic-info-content {
-  overflow-y: auto;
-}
-
-.basic-info-content :deep(.arco-form-item) {
-  margin-bottom: 16px;
-}
-
-/* 字段列表和索引列表内容 */
-.fields-content,
-.indexes-content {
-  overflow-y: auto;
-}
-
-.section-header {
-  display: flex;
-  justify-content: flex-end;
-  align-items: center;
-  margin-bottom: 12px;
-  flex-shrink: 0;
-}
-
-.empty-tip {
-  padding: 20px;
-  text-align: center;
-  flex: 1;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
-
-.fields-content :deep(.arco-table),
-.indexes-content :deep(.arco-table) {
-  margin-top: 12px;
-}
-
-/* SQL预览内容 */
-.sql-preview-content {
-  overflow: hidden;
-}
-
-.sql-preview-header {
-  display: flex;
-  justify-content: flex-end;
-  align-items: center;
-  margin-bottom: 12px;
-  flex-shrink: 0;
-}
-
-.sql-preview-wrapper {
-  flex: 1;
-  min-height: 0;
-  overflow: auto;
-  background: var(--color-fill-2, #f2f3f5);
-  border: 1px solid var(--color-border-2, #e5e6eb);
-  border-radius: var(--border-radius-small, 2px);
-  padding: var(--spacing-md, 12px);
-}
-
-.sql-code {
-  margin: 0;
-  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
-  font-size: 13px;
-  line-height: 1.6;
-  color: var(--color-text-1, #1d2129);
-  white-space: pre-wrap;
-  word-wrap: break-word;
-  background: transparent;
-}
-</style>
--- a/Show More
+++ b/Show More
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绝尘	3d5a1e5892	优化：工具栏高度对齐+面板统一+远程连接架构+自动恢复预览 - 工具栏：面包屑与右侧组件像素级等高(:deep 34px)、合并重复search handler、统一分隔符样式、删除死代码 - 面板对齐：三面板header统一padding/font-size、文件列表分页固定底部(自定义紧凑)、表头默认隐藏、滚动条统一样式 - 预览区：始终显示空白预览面板、重启自动恢复上次打开文件 - 收藏夹：简化计数显示(共N项) - 远程连接：ConnectionIndicator自适应UI(无远程显示mini云图标)、ConnectionDialog支持编辑配置、transport抽象层(本地Wails/远程HTTP双模式)、agent后端模块	2026-04-30 22:25:27 +08:00
绝尘	4f1d5f885f	重构：移除数据库客户端模块 v0.4.0（-17,885行，专注文件管理） - 删除全部 MySQL/Redis/MongoDB 客户端代码（dbclient/api/service/storage） - 清理 4 个驱动依赖（mysql/redis/mongo/gorm-mysql），构建体积 -10MB - 前端移除 db-cli 整个目录（40 文件）+ 7 个 API/工具文件 - 版本号升级至 v0.4.0，顶部 Tab 仅保留文件管理	2026-04-26 00:03:22 +08:00
绝尘	742581c5d6	新增：Windows 图标源文件 + PNG→ICO 转换脚本	2026-04-25 23:26:25 +08:00
绝尘	4ffac72999	文档：CHANGELOG v0.3.4 + README 功能/技术栈更新 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>	2026-04-22 08:05:42 +08:00
绝尘	72fef3e56f	优化：文件服务器安全重构+编辑器增强+搜索排序+更新面板Markdown渲染 - 路径校验提取validateFilePath+sentinel error替代字符串匹配 - requireUpdateAPI收敛7处重复nil检查 - 端口18765统一为8073，消除分散魔法数字 - CodeMirror添加搜索功能+滚动位置LRU缓存恢复 - 文件列表新增列排序+搜索过滤 - Toolbar重排：快捷访问内嵌+搜索框集成+历史改图标 - 重命名零闪烁：updateFilePath草稿迁移 - changelog用marked渲染+sanitizeHtml防XSS - MigrateTabConfig扩展map驱动覆盖openclaw-manager→version迁移 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>	2026-04-21 21:53:31 +08:00
绝尘	691e38604f	发布：v0.3.3 版本历史模块 + 域名迁移 + 站点版本信息修正 - 版本号更新至 0.3.3（version.go/wails.json/README.md） - 更新检查域名迁移 img.1216.top → c.1216.top - 新增 views/version 版本历史 Tab 页面（时间线 UI） - 设置面板新增版本历史入口按钮 - CHANGELOG 补全 0.3.3 全部 17 个提交记录 - 站点 HTML 修正（删除错误 v0.4.0，v0.3.3 为最新） - 生成 last-version.json / versions.json 发布数据	2026-04-14 00:43:21 +08:00