feat(monitoring): dispatch monitoring tasks to desktop via AMQP outbox

Replace SSE /desktop/events with priority AMQP dispatch for monitoring
runs, and add phase1/phase2 infrastructure so desktop workers can lease,
resume, report, skip, and cancel monitoring tasks over the existing
dispatch WebSocket.

- Add monitoring collect outbox worker and phase2 desktop task fields
- Add /desktop/monitoring/tasks/{lease,resume,result,skip,cancel} routes
- Introduce execution-devtools and network-observer on desktop runtime
- Refactor runtime-controller, LoginView, and doubao adapter for the new flow
- Add channelName column to tracking views

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

server/internal/tenant/transport/desktop_task_handler.go

@@ -24,6 +24,7 @@ func NewDesktopTaskHandler(a *bootstrap.App) *DesktopTaskHandler {
 	return &DesktopTaskHandler{
 		svc: app.NewDesktopTaskService(
 			a.DB,
+			a.MonitoringDB,
 			a.RabbitMQ,
 			a.Logger,
 		).WithCache(a.Cache),