feat: Agent一键安装(loading/成功/失败状态无弹框) + 批量安装API

backend/internal/api/routes/routes.go

@@ -141,6 +141,7 @@ func Register(r *gin.Engine, db *gorm.DB, log *zap.Logger, cfg *config.Config, c
 		// Agent 远程安装 // Logan.Li
 		agentInstallHandler := handlers.NewAgentInstallHandler(db)
 		servers.POST("/:id/install-agent", agentInstallHandler.InstallAgent)
+		servers.POST("/install-agent", agentInstallHandler.BatchInstallAgent)
 	}
 
 	// 云账号路由