feat(server): 实现 LSP 管理 REST API

- 新增 /api/lsp/servers 端点，列出所有语言服务器
- 新增 /api/lsp/servers/:id 端点，获取服务器详情
- 新增 /api/lsp/servers/:id/install 端点，安装服务器
- 新增 /api/lsp/servers/:id/start 端点，启动服务器
- 新增 /api/lsp/servers/:id/stop 端点，停止服务器
- 新增 /api/lsp/diagnostics 端点，获取诊断信息
- 新增 /api/lsp/running 端点，获取运行中服务器列表
- core/lsp 添加 stopServer, getRunningServers, isServerRunning 方法

packages/core/src/index.ts

@@ -88,10 +88,38 @@ export type {
 } from './permission/index.js';
 
 // LSP
-export { initLSP, shutdownLSP } from './lsp/index.js';
+export {
+  initLSP,
+  shutdownLSP,
+  getLSPManager,
+  touchFile,
+  getDiagnostics,
+  getFileDiagnostics,
+  formatDiagnostics,
+  getFormattedFileDiagnostics,
+  stopServer,
+  getRunningServers,
+  isServerRunning,
+  listServers,
+  installServer,
+  getLanguageId,
+  isLanguageSupported,
+  getSupportedExtensions,
+  getServerConfig,
+  hasServerConfig,
+  getSupportedLanguages,
+  getUniqueServers,
+} from './lsp/index.js';
+
+export type {
+  FileDiagnostic,
+  ServerConfig,
+  InstallConfig,
+  ServerStatus,
+} from './lsp/index.js';
+
 export {
   printServerList,
-  installServer,
   installAllServers,
   showServerInfo,
 } from './lsp/cli.js';