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/repository/queries/desktop_task.sql

@@ -65,7 +65,11 @@ WITH candidate AS (
         sqlc.narg(kind)::text IS NULL
         OR dt.kind = sqlc.narg(kind)::text
       )
-    ORDER BY dt.created_at ASC, dt.desktop_id ASC
+    ORDER BY dt.lane_weight DESC,
+        dt.priority DESC,
+        COALESCE(dt.enqueued_at, dt.created_at) ASC,
+        dt.created_at ASC,
+        dt.desktop_id ASC
     LIMIT 1
     FOR UPDATE SKIP LOCKED
 )