refactor: 清理 Electron 遗留代码并优化项目结构

- 删除 Electron 主进程代码 (src/main/)
- 删除构建产物文件夹 (build/, dist/, release/)
- 清理 package.json 中的 Electron 依赖和脚本
- 删除 TypeScript 配置中的 Electron 相关文件
- 优化前端代码结构至 Tauri 标准结构 (src/renderer → src/)
- 删除移动端图标和不必要文件
- 更新文档说明技术栈变更为 Tauri

src/vite-env.d.ts

@@ -0,0 +1,39 @@
+/// <reference types="vite/client" />
+
+import { Provider } from './shared/types';
+
+interface ImportResult {
+  success: boolean;
+  message?: string;
+}
+
+interface ConfigStatus {
+  exists: boolean;
+  path: string;
+  error?: string;
+}
+
+declare global {
+  interface Window {
+    electronAPI: {
+      getProviders: () => Promise<Record<string, Provider>>;
+      getCurrentProvider: () => Promise<string>;
+      addProvider: (provider: Provider) => Promise<boolean>;
+      deleteProvider: (id: string) => Promise<boolean>;
+      updateProvider: (provider: Provider) => Promise<boolean>;
+      switchProvider: (providerId: string) => Promise<boolean>;
+      importCurrentConfigAsDefault: () => Promise<ImportResult>;
+      getClaudeCodeConfigPath: () => Promise<string>;
+      getClaudeConfigStatus: () => Promise<ConfigStatus>;
+      selectConfigFile: () => Promise<string | null>;
+      openConfigFolder: () => Promise<void>;
+      openExternal: (url: string) => Promise<void>;
+    };
+    platform: {
+      isMac: boolean;
+    };
+    __TAURI__?: any;
+  }
+}
+
+export {};