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/main.js

@@ -15,7 +15,7 @@
  *   8. tier-security.js — Adversarial red-team tests (auth, cross-tenant, input validation)
  *   9. tier-providers.js — Three-tier provider CRUD + live completions
  *  10. tier-packaging.js — Extension permission lifecycle + secrets (v0.29.0)
- *  11. tier-sdk.js  — Switchboard SDK contract tests
+ *  11. tier-sdk.js  — Armature SDK contract tests
  *  12. ui.js         — Render functions, export, provider setup panel
  *  11. (this file)   — Boot
  */