YouTube come destinazione pubblica, non Match Live TV.

Non propone più il link MLTV per sessioni YouTube; la pagina /live
reindirizza a YouTube; il relay verso YouTube si riavvia al connect.

Co-authored-by: Cursor <cursoragent@cursor.com>

mobile/lib/shared/models/stream_session.dart

@@ -13,6 +13,7 @@ class StreamSession {
     this.shareUrl,
     this.youtubeWatchUrl,
     this.youtubeBroadcastId,
+    this.youtubeReady = false,
     this.privacyStatus = 'public',
     this.qualityPreset = '720p_30_2.5mbps',
     this.targetBitrate = 2500000,
@@ -32,6 +33,7 @@ class StreamSession {
   final String? shareUrl;
   final String? youtubeWatchUrl;
   final String? youtubeBroadcastId;
+  final bool youtubeReady;
   final String privacyStatus;
   final String qualityPreset;
   final int targetBitrate;
@@ -62,6 +64,7 @@ class StreamSession {
       shareUrl: json['share_url'] as String?,
       youtubeWatchUrl: json['youtube_watch_url'] as String?,
       youtubeBroadcastId: json['youtube_broadcast_id'] as String?,
+      youtubeReady: json['youtube_ready'] as bool? ?? false,
       privacyStatus: json['privacy_status'] as String? ?? 'public',
       qualityPreset: json['quality_preset'] as String? ?? '720p_30_2.5mbps',
       targetBitrate: json['target_bitrate'] as int? ?? 2500000,