增加接口日志输出

.env.example

@@ -1,5 +1,5 @@
 # 数据库配置
-DATABASE_URL=postgresql+asyncpg://postgres:12345@localhost:5432/ai_talk_callback_db
+DATABASE_URL=postgresql+asyncpg://user:password@localhost:5432/ai_talk_callback_db
 
 # Redis配置
 REDIS_URL=redis://localhost:6379/0
@@ -12,6 +12,14 @@ COUNT_THRESHOLD=3
 EXTERNAL_API_RETRY_MAX=4
 EXTERNAL_API_URL=https://external.com/api/openapi/customerApi/aiTaskResultFail
 
+# 日志配置
+LOG_LEVEL=INFO
+LOG_FILE=logs/app.log
+LOG_MAX_BYTES=10485760
+LOG_BACKUP_COUNT=5
+LOG_FORMAT=%(asctime)s - %(name)s - %(levelname)s - %(message)s
+LOG_DATE_FORMAT=%Y-%m-%d %H:%M:%S
+
 # 应用配置
 APP_NAME=AI Talk Callback API
 DEBUG=false