docs: add route-control command to HOWTO and CLAUDE.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

HOWTO.md

@@ -325,6 +325,12 @@ curl -s -X POST http://localhost:8081/api/v1/agents/groups/order-service-prod/co
   -H "Authorization: Bearer $TOKEN" \
   -d '{"type":"deep-trace","payload":{"routeId":"route-1","durationSeconds":60}}'
 
+# Send route control command to agent group (start/stop/suspend/resume)
+curl -s -X POST http://localhost:8081/api/v1/agents/groups/order-service-prod/commands \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer $TOKEN" \
+  -d '{"type":"route-control","payload":{"routeId":"route-1","action":"stop","nonce":"unique-uuid"}}'
+
 # Broadcast command to all live agents
 curl -s -X POST http://localhost:8081/api/v1/agents/commands \
   -H "Content-Type: application/json" \
@@ -338,7 +344,7 @@ curl -s -X POST http://localhost:8081/api/v1/agents/agent-1/commands/{commandId}
 
 **Agent lifecycle:** LIVE (heartbeat within 90s) → STALE (missed 3 heartbeats) → DEAD (5min after STALE). DEAD agents kept indefinitely.
 
-**SSE events:** `config-update`, `deep-trace`, `replay` commands pushed in real time. Server sends ping keepalive every 15s.
+**SSE events:** `config-update`, `deep-trace`, `replay`, `route-control` commands pushed in real time. Server sends ping keepalive every 15s.
 
 **Command expiry:** Unacknowledged commands expire after 60 seconds.