Improve fleet control, Crucible ops, and multi-machine identity.

Use hostname-first agent names so the same forged binary on many machines stays distinct at scale. Add WebSocket RTT latency on the roster and Crucible, fleet delete and uninstall flows, live alert config reload, and non-blocking pool setup. Fix Crucible phantom agents after delete, posture scan targeting, and USB portability (config data_dir, LAUNCH sync).

server/internal/alerts/evaluator.go

@@ -31,7 +31,7 @@ type Broadcaster func(AlertEvent)
 type Evaluator struct {
 	db          *db.Database
 	thresholds  func() Thresholds
-	notify      NotifyConfig
+	notify      func() NotifyConfig
 	broadcast   Broadcaster
 	mu          sync.Mutex
 	baseline    map[string]float64
@@ -40,7 +40,7 @@ type Evaluator struct {
 	cooldown    time.Duration
 }
 
-func NewEvaluator(database *db.Database, thresholds func() Thresholds, notify NotifyConfig, broadcast Broadcaster) *Evaluator {
+func NewEvaluator(database *db.Database, thresholds func() Thresholds, notify func() NotifyConfig, broadcast Broadcaster) *Evaluator {
 	return &Evaluator{
 		db:           database,
 		thresholds:   thresholds,
@@ -180,7 +180,7 @@ func (e *Evaluator) fire(ev AlertEvent, cooldownKey string) {
 	e.mu.Unlock()
 
 	log.Printf("[Alert] %s: %s", ev.Type, ev.Message)
-	NotifyAll(e.notify, "AetherForge "+ev.Type, ev.Message)
+	NotifyAll(e.notify(), "AetherForge "+ev.Type, ev.Message)
 	if e.broadcast != nil {
 		e.broadcast(ev)
 	}

server/internal/alerts/evaluator_test.go

@@ -17,6 +17,7 @@ func TestEvaluatorOfflineAlert(t *testing.T) {
 	var fired []AlertEvent
 	e := &Evaluator{
 		thresholds: func() Thresholds { return Thresholds{OfflineMinutes: 5} },
+		notify:     func() NotifyConfig { return NotifyConfig{} },
 		broadcast:  func(ev AlertEvent) { fired = append(fired, ev) },
 		baseline:   make(map[string]float64),
 		lastFired:  make(map[string]time.Time),