feat(app): create MySQL tables for market data in lifespan

app/main.py

@@ -57,6 +57,13 @@ async def lifespan(app: FastAPI):
     else:
         logger.error("存储模式: SQLite (Redis 和 MySQL 均不可用)")
 
+    if mysql_ok:
+        from app.mysql_database import mysql_engine
+        from app.models import Base as MarketBase, MarketData, SymbolTimestamp
+        # 在 MySQL 中创建行情相关表
+        MarketBase.metadata.create_all(bind=mysql_engine, tables=[MarketData.__table__, SymbolTimestamp.__table__])
+        logger.info("MySQL 表结构初始化完成")
+
     # 创建默认管理员账户
     from app.database import SessionLocal
     from app import auth_service