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/evaluator_test.go

@@ -17,7 +17,7 @@ func TestEvaluatorOfflineAlert(t *testing.T) {
 	var fired []AlertEvent
 	e := &Evaluator{
 		thresholds: func() Thresholds { return Thresholds{OfflineMinutes: 5} },
-		notify:     func() NotifyConfig { return NotifyConfig{} },
+		settings:   func() Settings { return NewSettings(NotifyConfig{}, EventToggles{AgentOffline: true}) },
 		broadcast:  func(ev AlertEvent) { fired = append(fired, ev) },
 		baseline:   make(map[string]float64),
 		lastFired:  make(map[string]time.Time),