Stabilizza live YouTube/RTMP e fix crash rotazione mobile.

Pipeline YouTube con relay, overlay e publisher sync lato backend; fix GL pauseGlDuringRotation su Android per evitare crash in rotazione durante lo streaming Flutter.

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

mobile/lib/features/setup_wizard/step_network_test.dart

@@ -2,12 +2,14 @@ import 'dart:async';
 import 'dart:math';
 
 import 'package:connectivity_plus/connectivity_plus.dart';
+import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../app/theme.dart';
 import '../../providers/score_provider.dart';
+import '../../providers/score_sync_provider.dart';
 import '../../providers/session_provider.dart';
 import '../../shared/api_client.dart';
 import '../../shared/models/match.dart';
@@ -74,9 +76,9 @@ class _StepNetworkTestState extends ConsumerState<StepNetworkTest> {
 
     _youtubePoll?.cancel();
     var attempts = 0;
-    _youtubePoll = Timer.periodic(const Duration(seconds: 2), (_) async {
+    _youtubePoll = Timer.periodic(const Duration(seconds: 3), (_) async {
       attempts++;
-      if (!mounted || attempts > 30) {
+      if (!mounted || attempts > 60) {
         _youtubePoll?.cancel();
         return;
       }
@@ -150,14 +152,10 @@ class _StepNetworkTestState extends ConsumerState<StepNetworkTest> {
     if (session.score != null) {
       ref.read(scoreProvider.notifier).reset(session.score!);
     }
+    // Tabellone via HTTP; WebSocket solo dalla camera (evita doppio connect controller/camera).
     try {
-      await ref.read(websocketServiceProvider).connect(
-            sessionId: session.id,
-            deviceRole: 'controller',
-          );
-    } catch (_) {
-      // Tabellone locale; sync quando la camera si connette.
-    }
+      await ref.read(scoreSyncProvider).pullFromServer();
+    } catch (_) {}
   }
 
   String _connectivityLabel(List<ConnectivityResult> results) {
@@ -184,18 +182,22 @@ class _StepNetworkTestState extends ConsumerState<StepNetworkTest> {
         ref.read(scoreProvider.notifier).reset(const ScoreState());
       }
 
+      if (!mounted) return;
+      await ref.read(websocketServiceProvider).disconnect();
       if (!mounted) return;
       context.go('/session/${started.id}/camera');
-
-      try {
-        final ws = ref.read(websocketServiceProvider);
-        await ws.connect(sessionId: started.id, deviceRole: 'controller');
-      } catch (e) {
-        if (mounted) {
-          ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(content: Text('Diretta avviata ma sync limitata: $e')),
-          );
-        }
+    } on DioException catch (e) {
+      if (mounted) {
+        final msg = e.response?.data is Map
+            ? (e.response!.data['error'] ?? e.response!.data['message'])?.toString()
+            : null;
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+              msg?.isNotEmpty == true ? 'Errore avvio diretta: $msg' : 'Errore avvio diretta: ${e.message}',
+            ),
+          ),
+        );
       }
     } catch (e) {
       if (mounted) {

mobile/lib/features/setup_wizard/step_transmission.dart

@@ -270,7 +270,7 @@ class _StepTransmissionState extends ConsumerState<StepTransmission> {
                       child: Column(
                         crossAxisAlignment: CrossAxisAlignment.start,
                         children: [
-                          Text('720p · 30fps · 2.5 Mbps', style: theme.textTheme.titleMedium),
+                          Text('720p · 30fps · 3 Mbps', style: theme.textTheme.titleMedium),
                           const SizedBox(height: 4),
                           Text(
                             'Bitrate fisso consigliato per reti instabili',