docs: update all documentation for session changes

CLAUDE.md:
- Agent registry auto-heal note (in-memory, JWT fallback)
- Usage analytics (ClickHouse usage_events table)

HOWTO.md:
- Architecture diagram: added deploy-demo (NodePort 30092) and cameleer-demo namespace
- Access URLs: added Deploy Demo
- Agent registry: server restart resilience documentation
- Route control: CommandGroupResponse note

ui/README.md:
- Fixed outdated generate-api command
- Added DS version (v0.1.26)
- Fixed VITE_API_TARGET (30081 not 30090)
- Added key features section (cmd-k, LIVE mode, route control, event icons)

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

HOWTO.md

@@ -343,10 +343,14 @@ 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.
 
+**Server restart resilience:** The agent registry is in-memory and lost on server restart. Agents auto-re-register on their next heartbeat or SSE connection — the server reconstructs registry entries from JWT claims (subject, application). Route catalog uses ClickHouse execution data as fallback until agents re-register with full route IDs. Agents should also handle 404 on heartbeat by triggering a full re-registration.
+
 **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.
 
+**Route control responses:** Route control commands return `CommandGroupResponse` with per-agent status, response count, and timed-out agent IDs.
+
 ### Backpressure
 
 When the write buffer is full (default capacity: 50,000), ingestion endpoints return **503 Service Unavailable**. Already-buffered data is not lost.
@@ -440,10 +444,14 @@ cameleer namespace:
   ClickHouse (StatefulSet, 10Gi PVC)       ← clickhouse:8123 (ClusterIP)
   cameleer3-server (Deployment)            ← NodePort 30081
   cameleer3-ui (Deployment, Nginx)         ← NodePort 30090
+  cameleer-deploy-demo (Deployment)        ← NodePort 30092
   Authentik Server (Deployment)            ← NodePort 30950
   Authentik Worker (Deployment)
   Authentik PostgreSQL (StatefulSet, 1Gi)  ← ClusterIP
   Authentik Redis (Deployment)             ← ClusterIP
+
+cameleer-demo namespace:
+  (deployed Camel applications — managed by cameleer-deploy-demo)
 ```
 
 ### Access (from your network)
@@ -453,6 +461,7 @@ cameleer namespace:
 | Web UI | `http://192.168.50.86:30090` |
 | Server API | `http://192.168.50.86:30081/api/v1/health` |
 | Swagger UI | `http://192.168.50.86:30081/api/v1/swagger-ui.html` |
+| Deploy Demo | `http://192.168.50.86:30092` |
 | Authentik | `http://192.168.50.86:30950` |
 
 ### CI/CD Pipeline