统一开发环境使用 MySQL

web/backend/database.py

@@ -8,8 +8,6 @@ from sqlalchemy import create_engine, event
 from sqlalchemy.orm import sessionmaker, declarative_base
 
 PROJECT_ROOT = Path(__file__).resolve().parents[2]
-DB_PATH = PROJECT_ROOT / "data" / "web.db"
-DB_PATH.parent.mkdir(parents=True, exist_ok=True)
 
 
 def _env_int(name: str, default: int) -> int:
@@ -40,7 +38,10 @@ def _get_database_url() -> str:
             f"@{db_host}:{db_port}/{db_name}?charset=utf8mb4"
         )
 
-    return f"sqlite:///{DB_PATH}"
+    raise RuntimeError(
+        "未配置数据库连接。请设置 DATABASE_URL=mysql+pymysql://...，"
+        "或设置 DB_HOST、DB_NAME、DB_USER、DB_PASSWORD"
+    )
 
 
 DATABASE_URL = _get_database_url()