v2.0.0: 主题系统+SSH私钥解析修复+会话持久化+连接池优化+UI打磨

核心修复:
- ssh-service.ts: 新增 resolvePrivateKey()，将私钥文件路径(~/.ssh/id_rsa)解析为内容后传给 ssh2，
  解决 'Cannot parse privateKey: Unsupported key format' 错误
- useTerminalConnection.ts + sessionHelper.ts: 根据 authType 过滤字段，password/agent 认证不再传 privateKey
- sessionStore.ts: addSession() 现在先调用 sessionCreate() 持久化到 SQLite，解决恢复标签'无可用连接信息'问题
- database-service.ts: updateSession() 补充 private_key_path 字段持久化
- SessionDialog.tsx: 默认 username='root'、privateKey='~/.ssh/id_rsa'

UI/UX:
- 语义化主题系统(app-theme.ts)，强制深色模式，全局无边框设计
- macOS 标题栏支持双击最大化(window:toggleMaximize IPC)
- macOS 菜单栏('OpsXShell' 应用菜单 + Settings Cmd+,)
- WelcomeView 4卡片布局，移除 Settings 按钮
- TabBar/TabItem 背景色统一(bg-dark-800/900)，消除白色边框线

架构优化:
- SFTP 生命周期修复(useSFTP.ts useRef + autoConnectAttempted guard)
- 连接池竞态修复，支持快速多标签连接
- IPC 接口规范化，安全错误处理
- Vite 代码分割优化

质量: lint零错误 | tsc零错误 | build成功 | 49 tests pass

src/stores/connection/poolStore.ts

@@ -201,10 +201,10 @@ export const usePoolStore = create<PoolState>((set, get) => ({
       })
 
       return { success: true, connectionId }
-    } catch (error: any) {
+    } catch (error: unknown) {
       return {
         success: false,
-        error: error.message || 'Unknown error creating connection',
+        error: error instanceof Error ? error.message : 'Unknown error creating connection',
       }
     }
   },

src/stores/connection/sessionHelper.ts

@@ -26,6 +26,7 @@ export async function getSessionConfig(sessionId: string): Promise<ConnectionCon
       password: session.password,
       privateKey: session.privateKey,
       passphrase: session.passphrase,
+      authType: session.authType,
     }
   } catch (error) {
     logger.error('Failed to get session config:', error)

src/stores/sessionStore.ts

@@ -34,10 +34,19 @@ export const useSessionStore = create<SessionState>((set) => ({
 
   setSessions: (sessions) => set({ sessions }),
 
-  addSession: (session) => {
-    set((state) => ({
-      sessions: [...state.sessions, session],
-    }))
+  addSession: async (session) => {
+    // 同步到数据库
+    const result = await window.electronAPI?.sessionCreate(session)
+    if (result?.success && result.session) {
+      set((state) => ({
+        sessions: [...state.sessions, result.session!],
+      }))
+    } else {
+      // 失败时仍然添加到本地状态，避免 UI 卡住
+      set((state) => ({
+        sessions: [...state.sessions, session],
+      }))
+    }
   },
 
   removeSession: (id) => {

src/stores/tabStore.ts

@@ -1,22 +1,13 @@
 import { create } from 'zustand'
 import { persist } from 'zustand/middleware'
 import { createLogger } from '../utils/logger'
+import type { SSHConnectionConfig } from '../../shared/types/session.types'
 
 const logger = createLogger('TabStore')
 
 export type TabType = 'welcome' | 'terminal' | 'sftp' | 'portforward' | 'settings'
 export type ConnectionStatus = 'disconnected' | 'connecting' | 'connected' | 'error'
 
-// SSH 连接配置（用于快速连接）
-export interface SSHConnectionConfig {
-  host: string
-  port: number
-  username: string
-  password?: string
-  privateKey?: string
-  passphrase?: string
-}
-
 // 连接实例信息
 export interface ConnectionInstance {
   connectionId: string  // 实际的 SSH 连接 ID
@@ -341,7 +332,7 @@ export const useTabStore = create<TabState>()(
         logger.info('Restoring tabs from persisted state:', persisted.tabs.length, 'tabs')
 
         // 将持久化的标签转换为运行时标签
-        const restoredTabs: Tab[] = persisted.tabs.map((tab: any) => ({
+        const restoredTabs: Tab[] = persisted.tabs.map((tab: Tab) => ({
           ...tab,
           isActive: false,
           connectionStatus: 'disconnected' as ConnectionStatus,