refactor(logging): 改进账户模型中的日志记录级别

将账户模型中的日志记录级别从 info 调整为 debug，以减少日志冗余并提高调试信息的可读性。同时，优化了配置重新加载的日志记录逻辑，确保只记录一次，避免重复日志输出。此改动提升了代码的可维护性与日志管理效率。

backend/database/models.py

@@ -53,10 +53,10 @@ class Account:
     def get(account_id: int):
         import logging
         logger = logging.getLogger(__name__)
-        logger.info(f"Account.get called with account_id={account_id}")
+        logger.debug("Account.get called with account_id=%s", account_id)
         row = db.execute_one("SELECT * FROM accounts WHERE id = %s", (int(account_id),))
         if row:
-            logger.info(f"Account.get: found account_id={account_id}, name={row.get('name', 'N/A')}, status={row.get('status', 'N/A')}")
+            logger.debug("Account.get: found account_id=%s, name=%s, status=%s", account_id, row.get('name', 'N/A'), row.get('status', 'N/A'))
         else:
             logger.warning(f"Account.get: account_id={account_id} not found in database")
         return row
@@ -135,7 +135,7 @@ class Account:
         """
         import logging
         logger = logging.getLogger(__name__)
-        logger.info(f"Account.get_credentials called with account_id={account_id}")
+        logger.debug("Account.get_credentials called with account_id=%s", account_id)
         row = Account.get(account_id)
         if not row:
             logger.warning(f"Account.get_credentials: account_id={account_id} not found in database")

trading_system/main.py

@@ -198,12 +198,6 @@ async def main():
     
     if config.USE_DB_CONFIG:
         logger.info("✓ 使用数据库配置")
-        # 尝试重新加载配置（确保获取最新值）
-        try:
-            config.reload_config()
-            logger.info("配置已重新加载")
-        except Exception as e:
-            logger.warning(f"重新加载配置失败: {e}", exc_info=True)
     else:
         logger.warning("⚠ 未使用数据库配置，将使用环境变量和默认配置")
         logger.warning("如果前端已配置API密钥，请检查：")
@@ -211,8 +205,8 @@ async def main():
         logger.warning("2. 数据库连接是否正常")
         logger.warning("3. config_manager模块是否可以正常导入")
         logger.warning("4. 数据库配置表中是否有BINANCE_API_KEY和BINANCE_API_SECRET")
-    
-    # 强制重新加载配置（确保使用最新值）
+
+    # 统一在此重新加载配置（只打一次日志，避免重复）
     try:
         config.reload_config()
         logger.info("配置已重新加载")