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/scripts/apply_sql_file.py

@@ -0,0 +1,80 @@
+"""
+执行指定的 SQL 文件到当前配置的数据库（使用与后端一致的连接）。
+
+用法：
+  cd kaopeilian-backend && python3 scripts/apply_sql_file.py scripts/init_database_unified.sql
+"""
+import asyncio
+import sys
+from pathlib import Path
+
+# 确保可导入应用配置
+sys.path.append(str(Path(__file__).resolve().parent.parent))
+
+from sqlalchemy.ext.asyncio import create_async_engine
+from sqlalchemy import text
+
+from app.core.config import get_settings
+
+
+def load_sql_statements(sql_path: Path) -> list[str]:
+    """读取 SQL 文件并按语句拆分（简单分号分割，忽略注释）。"""
+    raw = sql_path.read_text(encoding="utf-8")
+    # 去掉 -- 开头的行注释
+    lines = []
+    for line in raw.splitlines():
+        striped = line.strip()
+        if not striped:
+            continue
+        if striped.startswith("--"):
+            continue
+        lines.append(line)
+
+    content = "\n".join(lines)
+
+    # 简单分割；注意保留分号作为语句结束标记
+    statements: list[str] = []
+    current = []
+    for ch in content:
+        current.append(ch)
+        if ch == ";":
+            stmt = "".join(current).strip()
+            if stmt:
+                statements.append(stmt)
+            current = []
+    # 可能没有以分号结束的尾部
+    tail = "".join(current).strip()
+    if tail:
+        statements.append(tail)
+    return [s for s in statements if s]
+
+
+async def apply_sql(sql_file: str):
+    settings = get_settings()
+    engine = create_async_engine(settings.DATABASE_URL, echo=False)
+
+    sql_path = Path(sql_file)
+    if not sql_path.exists():
+        raise FileNotFoundError(f"SQL 文件不存在: {sql_path}")
+
+    statements = load_sql_statements(sql_path)
+
+    async with engine.begin() as conn:
+        # 执行每条语句
+        for stmt in statements:
+            await conn.execute(text(stmt))
+
+    await engine.dispose()
+
+
+async def main():
+    if len(sys.argv) < 2:
+        print("用法: python3 scripts/apply_sql_file.py <sql_file>")
+        sys.exit(1)
+    sql_file = sys.argv[1]
+    await apply_sql(sql_file)
+    print("SQL 执行完成")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())