правки лаунчера

lib/features/launcher/domain/entities/launcher_session.dart

@@ -17,6 +17,25 @@ final class LauncherSession {
     );
   }
 
+  Map<String, dynamic> toJson() {
+    return <String, dynamic>{
+      'access_token': accessToken,
+      'token_type': tokenType,
+      'expires_at': expiresAt?.toIso8601String(),
+    };
+  }
+
+  bool get hasAccessToken => accessToken.trim().isNotEmpty;
+
+  bool get isExpired {
+    final expiresAt = this.expiresAt;
+    if (expiresAt == null) {
+      return false;
+    }
+
+    return !expiresAt.toUtc().isAfter(DateTime.now().toUtc());
+  }
+
   static DateTime? _parseDateTime(String? rawValue) {
     if (rawValue == null || rawValue.isEmpty) {
       return null;