rebrand: Switchboard Core → Armature

- Rename Go module switchboard-core → armature (155+ files)
- Rename Docker image → gobha/armature
- Rename K8s resources, secrets, deployments
- Rename Prometheus metrics switchboard_* → armature_*
- Rename env vars SWITCHBOARD_ADMIN_* → ARMATURE_ADMIN_*
- Rename DB names switchboard_core* → armature*
- Update all frontend branding, notification templates, docs
- Update CI scripts, e2e tests, Keycloak realm, nginx conf
- Rename scripts/switchboard-ca.sh → scripts/armature-ca.sh
- Rename k8s/switchboard.yaml → k8s/armature.yaml
- Rename chart alerting/dashboard files
- Fix: DockerHub push uses env: binding for secret injection
- Helm chart updated (name, labels, template functions, dashboard, alerting)
- Replace favicon/icon assets with Armature brand

No functional changes. Pure mechanical rename + CI fix.

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

packages/icd-test-runner/js/ui.js

@@ -236,7 +236,7 @@
     }, 'Providers');
     T.el.controls.appendChild(btnProv);
 
-    // SDK tier button — tests switchboard-sdk.js contract
+    // SDK tier button — tests armature-sdk.js contract
     var btnSdk = $('button', {
       className: (typeof window.sw !== 'undefined') ? 'btn-secondary' : 'btn-ghost',
       style: { opacity: (typeof window.sw !== 'undefined') ? '1' : '0.5' },
@@ -368,7 +368,7 @@
     var totalMs = T.results.reduce(function (s, r) { return s + r.duration; }, 0);
 
     var lines = [];
-    lines.push('=== Switchboard Core ICD Test Report ===');
+    lines.push('=== Armature ICD Test Report ===');
     lines.push('Generated: ' + now);
     lines.push('Platform:  v' + (T.manifest.version || '0.28.0'));
     lines.push('User:      ' + T.user.username + ' (' + T.user.role + ')');