rebrand + purge orphaned frontend: Chat Switchboard → Switchboard Core

Branding: bulk rename across 50+ files (Go, JS, CSS, HTML, YAML, JSON,
shell scripts). Fix Helm chart description and git repo URLs.
Fix test helper taglines.

Admin surface: strip 14 gutted tabs (providers, models, personas,
roles, knowledge, memory, tasks, health, routing, capabilities,
channels, dashboard, usage, stats). Collapse to 4 categories:
People, Workflows, System, Monitoring.

Settings surface: strip 11 gutted tabs (models, personas, providers,
roles, knowledge, memory, usage, workflows, tasks, data, gitkeys).
Keep: general, appearance, profile, teams, connections, notifications.

Team-admin surface: strip 5 gutted tabs (personas, providers,
knowledge, tasks, usage). Keep: members, groups, connections,
workflows, settings, activity.

Components: delete chat-pane/ (13 files, 1938 lines) and
notes-pane/ (10 files, 2381 lines).

main.go: remove stale Health.Prune maintenance goroutine.

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

server/notifications/service.go

@@ -53,7 +53,7 @@ func NewService(s store.NotificationStore, hub *events.Hub) *Service {
 	return &Service{
 		store:         s,
 		hub:           hub,
-		instanceName:  "Chat Switchboard",
+		instanceName:  "Switchboard Core",
 		retentionDays: 90,
 		stopCleanup:   make(chan struct{}),
 	}

server/notifications/templates.go

@@ -54,7 +54,7 @@ Adjust your notification preferences in Settings.
 // RenderHTML renders an HTML email body for a notification.
 func RenderHTML(n *models.Notification, instanceName string) string {
 	if instanceName == "" {
-		instanceName = "Chat Switchboard"
+		instanceName = "Switchboard Core"
 	}
 	data := emailData{
 		Title:        n.Title,
@@ -73,7 +73,7 @@ func RenderHTML(n *models.Notification, instanceName string) string {
 // RenderText renders a plaintext email body for a notification.
 func RenderText(n *models.Notification, instanceName string) string {
 	if instanceName == "" {
-		instanceName = "Chat Switchboard"
+		instanceName = "Switchboard Core"
 	}
 	data := emailData{
 		Title:        n.Title,
@@ -92,7 +92,7 @@ func RenderText(n *models.Notification, instanceName string) string {
 // SubjectForNotification returns an email subject line.
 func SubjectForNotification(n *models.Notification, instanceName string) string {
 	if instanceName == "" {
-		instanceName = "Chat Switchboard"
+		instanceName = "Switchboard Core"
 	}
 	prefix := "[" + instanceName + "] "
 	switch {

server/notifications/templates_test.go

@@ -28,7 +28,7 @@ func TestRenderHTML_Basic(t *testing.T) {
 func TestRenderHTML_DefaultInstanceName(t *testing.T) {
 	n := &models.Notification{Title: "Test"}
 	html := RenderHTML(n, "")
-	if !strings.Contains(html, "Chat Switchboard") {
+	if !strings.Contains(html, "Switchboard Core") {
 		t.Error("expected default instance name")
 	}
 }