feat: wire context store scaffolding and dht test skeleton

pkg/slurp/storage/event_notifier_noop.go

@@ -0,0 +1,24 @@
+package storage
+
+import "context"
+
+// noopEventNotifier implements EventNotifier with no side effects.
+type noopEventNotifier struct{}
+
+// NewNoopEventNotifier returns a no-op event notifier implementation.
+func NewNoopEventNotifier() EventNotifier {
+	return &noopEventNotifier{}
+}
+
+func (n *noopEventNotifier) NotifyStored(ctx context.Context, event *StorageEvent) error { return nil }
+func (n *noopEventNotifier) NotifyRetrieved(ctx context.Context, event *StorageEvent) error {
+	return nil
+}
+func (n *noopEventNotifier) NotifyUpdated(ctx context.Context, event *StorageEvent) error { return nil }
+func (n *noopEventNotifier) NotifyDeleted(ctx context.Context, event *StorageEvent) error { return nil }
+func (n *noopEventNotifier) Subscribe(ctx context.Context, eventType EventType, handler EventHandler) error {
+	return nil
+}
+func (n *noopEventNotifier) Unsubscribe(ctx context.Context, eventType EventType, handler EventHandler) error {
+	return nil
+}