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>

scripts/armature-ca.sh

@@ -1,14 +1,14 @@
 #!/usr/bin/env bash
 #
-# switchboard-ca.sh — Certificate provisioning for Switchboard Core mTLS.
+# armature-ca.sh — Certificate provisioning for Armature mTLS.
 #
 # Wraps openssl to generate a cluster CA, node certificates (ServerAuth +
 # ClientAuth), and user certificates (ClientAuth only). All output is PEM.
 #
 # Usage:
-#   switchboard-ca init
-#   switchboard-ca issue-node --name <node-name> --san <dns1,ip1,...>
-#   switchboard-ca issue-user --cn <username> [--email <email>]
+#   armature-ca init
+#   armature-ca issue-node --name <node-name> --san <dns1,ip1,...>
+#   armature-ca issue-user --cn <username> [--email <email>]
 #
 # Files are written to the current directory under ca/, nodes/, users/.
 
@@ -52,7 +52,7 @@ cmd_init() {
     -key "$CA_DIR/cluster-ca.key" \
     -out "$CA_DIR/cluster-ca.crt" \
     -days "$CA_DAYS" \
-    -subj "/CN=Switchboard Cluster CA" \
+    -subj "/CN=Armature Cluster CA" \
     -addext "basicConstraints=critical,CA:TRUE" \
     -addext "keyUsage=critical,keyCertSign,cRLSign" \
     2>/dev/null

scripts/db-bootstrap.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # ============================================
-# Switchboard Core - Database Bootstrap
+# Armature - Database Bootstrap
 # ============================================
 # Idempotent: safe to run on every CI build.
 # Creates the app role and database if they

scripts/db-migrate.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # ============================================
-# Switchboard Core - Database Migration Runner
+# Armature - Database Migration Runner
 # ============================================
 # NOTE: The Go backend auto-migrates on startup.
 # This script is for manual/emergency use only.

scripts/db-validate.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # ============================================
-# Switchboard Core - Schema Validation (v0.16)
+# Armature - Schema Validation (v0.16)
 # ============================================
 # Verifies the database schema is correct after
 # migration. Checks expected tables, key columns,