feat: v0.3.0 版本 - SSH终端、SFTP、端口转发功能实现

核心功能:
- SSH终端: 密码/密钥认证、XTerm.js终端、多主题配色、IP高亮
- SFTP管理: 双栏文件管理、上传下载、传输队列
- 端口转发: 本地/远程转发、SOCKS5动态代理、规则管理

架构改进:
- 拆分大型组件 (SFTPView/TabBar/Sidebar)
- 添加统一日志和错误处理
- 修复React严格模式下的终端黑屏问题

UI更新:
- 新增端口转发视图
- 更新UI预览文档
- 左侧栏右键菜单支持SFTP快捷打开

src/stores/settingsStore.ts

@@ -0,0 +1,99 @@
+import { create } from 'zustand'
+import { createLogger } from '../utils/logger'
+
+const logger = createLogger('SettingsStore')
+
+export interface AppSettings {
+  // 常规
+  restoreOnStart: boolean
+  autoSave: boolean
+  showNotifications: boolean
+
+  // 外观
+  theme: 'dark' | 'light' | 'system'
+  language: 'zh-CN' | 'en-US'
+
+  // 终端
+  fontFamily: string
+  fontSize: number
+  terminalTheme: 'dracula' | 'monokai' | 'solarized' | 'one-dark'
+
+  // SSH
+  keepAlive: boolean
+  defaultPort: number
+  timeout: number
+
+  // 专业连接管理
+  maxConnections: number
+  maxBackgroundConnections: number
+  idleTimeoutMs: number
+  suspendTimeoutMs: number
+  enableSnapshots: boolean
+  autoReconnect: boolean
+
+  // 安全
+  encryptPasswords: boolean
+  lockOnSleep: boolean
+}
+
+const defaultSettings: AppSettings = {
+  restoreOnStart: true,
+  autoSave: true,
+  showNotifications: false,
+  theme: 'dark',
+  language: 'zh-CN',
+  fontFamily: 'JetBrains Mono',
+  fontSize: 14,
+  terminalTheme: 'dracula',
+  keepAlive: true,
+  defaultPort: 22,
+  timeout: 30,
+  // 专业连接管理默认值
+  maxConnections: 10,
+  maxBackgroundConnections: 5,
+  idleTimeoutMs: 5 * 60 * 1000,       // 5 分钟
+  suspendTimeoutMs: 30 * 60 * 1000,   // 30 分钟
+  enableSnapshots: true,
+  autoReconnect: true,
+  encryptPasswords: true,
+  lockOnSleep: false,
+}
+
+interface SettingsState {
+  settings: AppSettings
+  isLoaded: boolean
+  setSetting: <K extends keyof AppSettings>(key: K, value: AppSettings[K]) => Promise<void>
+  loadSettings: () => Promise<void>
+  saveSettings: (settings: Partial<AppSettings>) => Promise<void>
+}
+
+export const useSettingsStore = create<SettingsState>((set, get) => ({
+  settings: defaultSettings,
+  isLoaded: false,
+
+  loadSettings: async () => {
+    try {
+      const result = await window.electronAPI?.settingsGet('app-settings')
+      if (result?.success && result.value) {
+        set({ settings: { ...defaultSettings, ...result.value }, isLoaded: true })
+      } else {
+        set({ isLoaded: true })
+      }
+    } catch (error) {
+      logger.error('Failed to load settings:', error)
+      set({ isLoaded: true })
+    }
+  },
+
+  setSetting: async (key, value) => {
+    const newSettings = { ...get().settings, [key]: value }
+    set({ settings: newSettings })
+    await window.electronAPI?.settingsSet('app-settings', newSettings)
+  },
+
+  saveSettings: async (newSettings) => {
+    const merged = { ...get().settings, ...newSettings }
+    set({ settings: merged })
+    await window.electronAPI?.settingsSet('app-settings', merged)
+  },
+}))