feat(social): local blocklist — hide blocked authors' offers, chats and incoming messages, with unblock management

apps/app_seeds/lib/services/inbox_service.dart

@@ -9,6 +9,7 @@ import 'notification_service.dart';
 import 'profile_cache.dart';
 import 'social_connection.dart';
 import 'social_service.dart' show SocialSession;
+import 'social_settings.dart';
 import 'unread_service.dart';
 
 /// App-wide inbox listener for private messages (NIP-17).
@@ -31,12 +32,14 @@ class InboxService {
     ProfileCache? profileCache,
     UnreadService? unread,
     NotificationService? notifications,
+    SocialSettings? settings,
   })  : _connection = connection,
         _selfPubkey = selfPubkey,
         _store = store,
         _profileCache = profileCache,
         _unread = unread,
-        _notifications = notifications;
+        _notifications = notifications,
+        _settings = settings;
 
   final SocialConnection _connection;
   final String _selfPubkey;
@@ -45,6 +48,10 @@ class InboxService {
   final UnreadService? _unread;
   final NotificationService? _notifications;
 
+  /// Holds the local blocklist; messages from blocked peers are dropped before
+  /// they are stored or notified. Null in tests → nothing filtered.
+  final SocialSettings? _settings;
+
   final _changes = StreamController<void>.broadcast();
   StreamSubscription<SocialSession?>? _sessionsSub;
   StreamSubscription<PrivateMessage>? _inboxSub;
@@ -86,6 +93,10 @@ class InboxService {
   /// testable seam (no relay).
   @visibleForTesting
   Future<void> ingest(PrivateMessage message) async {
+    final settings = _settings;
+    if (settings != null && await settings.isBlocked(message.fromPubkey)) {
+      return; // blocked peer — dropped before storage, unread or notification
+    }
     final stored = await _store.append(message.fromPubkey, message);
     if (!stored) return; // a re-delivered duplicate
     if (!_changes.isClosed) _changes.add(null);