chore: drop retired orb and sun VMs

Only the zap VM remains in the fleet. Remove orb/sun from the README
architecture/config docs, the getVMClassName allowlist, and their
.timeline-vm-tag color styles.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -7,7 +7,7 @@ Telemetry and monitoring system for AI agent activity across [OpenClaw](https://
 ```
                          ┌──────────────────────────┐
                          │   OpenClaw VMs            │
-                         │   (zap, orb, sun)         │
+                         │   (zap)                   │
                          │                           │
                          │   hooks/agentmon/         │
                          │     → handler.ts          │
@@ -187,7 +187,7 @@ The hook is deployed to each VM at `~/.openclaw/hooks/agentmon/`. Two environmen
 
 ```bash
 AGENTMON_INGEST_URL=http://192.168.122.1:8080
-AGENTMON_VM_NAME=zap  # or orb, sun
+AGENTMON_VM_NAME=zap
 ```
 
 Deployment is automated via Ansible — see the [swarm ansible playbook](https://gitea-http.taildb3494.ts.net/will/swarm) `playbooks/customize.yml`.

cmd/web-ui/static/modules/utils.js

@@ -204,7 +204,7 @@ export function getVMName(evt) {
 
 export function getVMClassName(vmName) {
   const normalized = String(vmName || 'unknown').toLowerCase();
-  return ['zap', 'orb', 'sun'].includes(normalized) ? normalized : 'unknown';
+  return ['zap'].includes(normalized) ? normalized : 'unknown';
 }
 
 export function getEventIcon(eventType) {

cmd/web-ui/static/style.css

@@ -1277,18 +1277,6 @@ tr.expandable:hover .expand-icon::before {
   border: 1px solid rgba(34, 211, 238, 0.2);
 }
 
-.timeline-vm-tag.orb {
-  background: rgba(167, 139, 250, 0.12);
-  color: var(--purple);
-  border: 1px solid rgba(167, 139, 250, 0.2);
-}
-
-.timeline-vm-tag.sun {
-  background: rgba(251, 191, 36, 0.12);
-  color: var(--warning);
-  border: 1px solid rgba(251, 191, 36, 0.2);
-}
-
 .timeline-vm-tag.unknown {
   background: var(--surface-2);
   color: var(--text-dim);