feat(alert-center): 添加飞书Webhook通知渠道 + 告警引擎实时通知

- 后端: NotifyChannel 模型新增 feishu 类型, FeishuWebhookConfig
- 后端: TestNotifyChannel 真实发送飞书测试消息(文本格式)
- 后端: 告警引擎触发/恢复时自动发送飞书通知(sendFeishuAlert/sendFeishuRecovery)
- 后端: AlertEngine 新增 tcp_time_wait/tcp_close_wait/service_process 指标检测
- 后端: NetworkStatModel 新增 TCPCloseWait 字段
- 后端: QuickSetupRules 一键创建6条告警规则(CPU/内存/磁盘/TIME_WAIT/CLOSE_WAIT/进程)
- 后端: 注册 /alerts/quick-setup 路由
- 前端: AlertChannelDialog 新增飞书类型选项
- 前端: helpers 新增 getChannelIcon/getChannelTypeLabel 支持 feishu/dingtalk/wechat

backend/internal/api/routes/routes.go

@@ -454,6 +454,7 @@ func Register(r *gin.Engine, db *gorm.DB, log *zap.Logger, cfg *config.Config, c
 		alerts.PUT("/notify-channels/:id", alertHandler.UpdateNotifyChannel)
 		alerts.DELETE("/notify-channels/:id", alertHandler.DeleteNotifyChannel)
 		alerts.POST("/notify-channels/:id/test", alertHandler.TestNotifyChannel)
+		alerts.POST("/quick-setup", alertHandler.QuickSetupRules)
 	}
 
 	// 流水线路由
@@ -545,6 +546,7 @@ func Register(r *gin.Engine, db *gorm.DB, log *zap.Logger, cfg *config.Config, c
 		tools.PUT("/:id", toolConfigHandler.UpdateTool)
 		tools.POST("/:id/install", toolConfigHandler.InstallTool)
 		tools.POST("/:id/check", toolConfigHandler.CheckToolStatus)
+		tools.GET("/:id/versions", toolConfigHandler.GetToolVersions)
 	}
 
 	// 自动化运维路由