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/cmd/tenant-api/main.go

@@ -32,7 +32,9 @@ func main() {
 	app.DesktopTaskStreams.Run(workerCtx)
 	app.DesktopDispatch.Run(workerCtx)
 
+	monitoringService := tenantapp.NewMonitoringService(app.DB, app.MonitoringDB, app.RabbitMQ, app.Config.MonitoringDispatch, app.Logger)
 	monitoringCallbackService := tenantapp.NewMonitoringCallbackService(app.DB, app.MonitoringDB, app.RabbitMQ, app.LLM, app.Logger)
+	tenantapp.NewMonitoringCollectOutboxWorker(monitoringService, app.Logger).Start(workerCtx)
 	tenantapp.NewMonitoringResultIngestWorker(monitoringCallbackService, app.RabbitMQ, app.Logger, app.Config.MonitoringWorkers).Start(workerCtx)
 	tenantapp.NewMonitoringProjectionRebuildWorker(monitoringCallbackService, app.RabbitMQ, app.Logger, app.Config.MonitoringWorkers).Start(workerCtx)
 	imageService := tenantapp.NewImageService(app.DB, app.ObjectStorage, app.RabbitMQ, app.Logger)