feat: 项目结构重构优化

types/env.d.ts

@@ -8,6 +8,9 @@ interface ImportMetaEnv {
   readonly VITE_APP_NAME: string;
   readonly VITE_APP_BASE_API: string;
   readonly VITE_APP_API_URL: string;
+  readonly VITE_APP_TITLE?: string;
+  readonly VITE_APP_TENANT_ENABLED?: string;
+  readonly VITE_ENABLE_AI_ASSISTANT?: string;
   readonly VITE_MOCK_DEV_SERVER: boolean;
 }