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

backend/test_remote_db.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+"""
+测试远程数据库连接
+"""
+import asyncio
+import urllib.parse
+
+async def test_remote_connection():
+    """测试远程数据库连接"""
+    try:
+        import aiomysql
+        
+        # 公网数据库信息
+        host = '120.79.247.16'  # 或 aiedu.ireborn.com.cn
+        port = 3306
+        user = 'root'
+        password = 'Kaopeilian2025!@#'
+        database = 'kaopeilian'
+        
+        print(f"正在连接到远程数据库 {host}:{port}/{database}...")
+        
+        # 直接连接测试
+        conn = await aiomysql.connect(
+            host=host,
+            port=port,
+            user=user,
+            password=password,
+            db=database,
+            charset='utf8mb4'
+        )
+        
+        cursor = await conn.cursor()
+        await cursor.execute("SELECT VERSION()")
+        version = await cursor.fetchone()
+        print(f"✅ 成功连接到MySQL: {version[0]}")
+        
+        # 测试查询
+        await cursor.execute("SHOW TABLES")
+        tables = await cursor.fetchall()
+        print(f"✅ 数据库中有 {len(tables)} 个表")
+        
+        await cursor.close()
+        conn.close()
+        
+        # 生成URL编码的连接字符串
+        password_encoded = urllib.parse.quote_plus(password)
+        dsn = f"mysql+aiomysql://{user}:{password_encoded}@{host}:{port}/{database}?charset=utf8mb4"
+        print(f"\n✅ 连接成功！")
+        print(f"📝 SQLAlchemy连接字符串（已编码）:")
+        print(f"   {dsn}")
+        
+        # 测试SQLAlchemy连接
+        from sqlalchemy.ext.asyncio import create_async_engine
+        engine = create_async_engine(dsn, echo=False)
+        
+        async with engine.begin() as conn:
+            result = await conn.execute(text("SELECT 1"))
+            print(f"\n✅ SQLAlchemy连接测试成功!")
+        
+        await engine.dispose()
+        
+    except Exception as e:
+        print(f"❌ 连接失败: {e}")
+        import traceback
+        traceback.print_exc()
+
+if __name__ == "__main__":
+    from sqlalchemy import text
+    asyncio.run(test_remote_connection())
+
+