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>

ci/e2e-upgrade-test.sh

@@ -82,13 +82,13 @@ echo -e "\n${YELLOW}═══ Phase 1: Build Images ═══${NC}"
 # Build "old" image from last commit (before current changes)
 echo "Building 'old' image from HEAD commit..."
 git stash -q 2>/dev/null || true
-docker build --no-cache -t switchboard-core:v-old . -q
+docker build --no-cache -t armature:v-old . -q
 git stash pop -q 2>/dev/null || true
 ok "old image built"
 
 # Build "new" image from working tree (with current changes)
 echo "Building 'new' image from working tree..."
-docker build --no-cache -t core-switchboard-new . -q
+docker build --no-cache -t armature:v-new . -q
 ok "new image built"
 
 # ═══════════════════════════════════════════════
@@ -97,7 +97,7 @@ ok "new image built"
 
 echo -e "\n${YELLOW}═══ Phase 2: Seed Data on Old Version ═══${NC}"
 
-docker compose -f "$COMPOSE_FILE" up postgres switchboard-old -d
+docker compose -f "$COMPOSE_FILE" up postgres armature-old -d
 wait_for_health "$HOST"
 
 # Auth
@@ -179,17 +179,17 @@ ok "recorded $PRE_PKG_COUNT installed packages"
 echo -e "\n${YELLOW}═══ Phase 3: Upgrade ═══${NC}"
 
 echo "Stopping old version..."
-docker compose -f "$COMPOSE_FILE" stop switchboard-old
+docker compose -f "$COMPOSE_FILE" stop armature-old
 ok "old version stopped"
 
 echo "Starting new version..."
-docker compose -f "$COMPOSE_FILE" up switchboard-new -d
+docker compose -f "$COMPOSE_FILE" up armature-new -d
 wait_for_health "$HOST"
 ok "new version started"
 
 # Check for migration errors in logs
 echo -e "\n${YELLOW}Checking startup logs...${NC}"
-LOGS=$(docker compose -f "$COMPOSE_FILE" logs switchboard-new 2>&1 || echo "")
+LOGS=$(docker compose -f "$COMPOSE_FILE" logs armature-new 2>&1 || echo "")
 if echo "$LOGS" | grep -qi "migration.*fail\|schema.*error\|panic\|fatal"; then
   fail "migration errors found in logs"
   echo "$LOGS" | grep -i "migration\|schema\|panic\|fatal" | head -5