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>

server/events/pg_broadcast.go

@@ -23,10 +23,10 @@ import (
 
 	"github.com/lib/pq"
 
-	"switchboard-core/database"
+	"armature/database"
 )
 
-const pgNotifyChannel = "switchboard_events"
+const pgNotifyChannel = "armature_events"
 
 // maxNotifyBytes is the practical PG NOTIFY payload limit (8192 byte hard limit,
 // leave headroom for encoding overhead).

server/events/ticket_adapter.go

@@ -7,7 +7,7 @@ import (
 	"context"
 	"time"
 
-	"switchboard-core/store"
+	"armature/store"
 )
 
 // TicketValidatorAdapter satisfies middleware.TicketValidator using a

server/events/ws.go

@@ -11,7 +11,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/gorilla/websocket"
 
-	"switchboard-core/metrics"
+	"armature/metrics"
 )
 
 const (