feat: Telegram fleet alerts, forge sigil scramble, UI polish, agent ops

- Calibrate: per-event Telegram/SMTP toggles, test notification, chat ID help
- Notify on agent connect/reconnect, offline/hashrate/rejection, forge complete
- Sigil scramble post-forge uniquification and Dispense Reveal ceremony
- Full system check, desktop push, BITS/host-binary persistence, Path Tracer
- Dashboard/Crucible visual polish, haptics, sacred geometry, mobile nav
- README documents alerts, sigil scramble, and pack-usb workflow
- USB bundle repacked via pack-usb.bat (AetherForge.exe + synced agent source)

server/internal/alerts/notifier.go

@@ -0,0 +1,54 @@
+package alerts
+
+import "log"
+
+// Notifier sends Telegram/email when Calibrate toggles allow it.
+type Notifier struct {
+	settings func() Settings
+}
+
+func NewNotifier(settings func() Settings) *Notifier {
+	return &Notifier{settings: settings}
+}
+
+func (n *Notifier) Emit(event string, title, body string) {
+	if n == nil || n.settings == nil {
+		return
+	}
+	s := n.settings()
+	if !n.eventEnabled(s, event) {
+		return
+	}
+	if s.TelegramBotToken == "" && s.TelegramChatID == "" && !s.EmailEnabled {
+		return
+	}
+	log.Printf("[Notify] %s: %s", event, body)
+	NotifyAll(s.NotifyConfig, title, body)
+}
+
+func (n *Notifier) eventEnabled(s Settings, event string) bool {
+	switch event {
+	case EventAgentConnect:
+		return s.Events.AgentConnect
+	case EventAgentReconnect:
+		return s.Events.AgentReconnect
+	case EventBuildComplete:
+		return s.Events.BuildComplete
+	case "offline":
+		return s.Events.AgentOffline
+	case "hashrate_drop":
+		return s.Events.HashrateDrop
+	case "rejection_rate":
+		return s.Events.RejectionRate
+	default:
+		return true
+	}
+}
+
+// GetSettings exposes current settings (alert test handler).
+func (n *Notifier) GetSettings() Settings {
+	if n == nil || n.settings == nil {
+		return Settings{}
+	}
+	return n.settings()
+}