feat: 初始化考培练系统项目

- 从服务器拉取完整代码
- 按框架规范整理项目结构
- 配置 Drone CI 测试环境部署
- 包含后端(FastAPI)、前端(Vue3)、管理端

技术栈: Vue3 + TypeScript + FastAPI + MySQL

frontend/vitest.config.ts

@@ -0,0 +1,47 @@
+/// <reference types="vitest" />
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import path from 'path'
+
+export default defineConfig({
+  plugins: [vue()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src')
+    }
+  },
+  test: {
+    environment: 'jsdom',
+    globals: true,
+    setupFiles: ['./src/test/setup.ts'],
+    include: ['src/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}'],
+    exclude: ['node_modules', 'dist', '.idea', '.git', '.cache'],
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      exclude: [
+        'node_modules/',
+        'src/test/',
+        '**/*.d.ts',
+        '**/*.config.*',
+        '**/coverage/**',
+        '**/dist/**',
+        '**/.{idea,git,cache,output,temp}/**'
+      ],
+      thresholds: {
+        global: {
+          branches: 60,
+          functions: 60,
+          lines: 60,
+          statements: 60
+        }
+      }
+    },
+    // 并行运行测试
+    threads: true,
+    // 测试超时时间
+    testTimeout: 10000,
+    // 钩子超时时间
+    hookTimeout: 10000
+  }
+})