feat: implement Live TV tab with grouped channels, pagination, and state management

lib/features/iptv/providers/xtream_provider.dart

@@ -38,6 +38,12 @@ final liveChannelsProvider = FutureProvider.autoDispose((ref) async {
   return await service.getLiveChannels();
 });
 
+/// Provider for live TV channels by playlist (family provider)
+final liveChannelsByPlaylistProvider = FutureProvider.family.autoDispose((ref, PlaylistConfig playlist) async {
+  final service = ref.watch(xtreamServiceProvider(playlist));
+  return await service.getLiveChannels();
+});
+
 /// Provider for VOD items (movies) grouped by category
 final vodItemsProvider = FutureProvider.autoDispose((ref) async {
   final service = ref.watch(activeXtreamServiceProvider);

lib/features/iptv/screens/dashboard_screen.dart

@@ -28,7 +28,7 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
   void initState() {
     super.initState();
     _tabs = [
-      const LiveTVTab(),
+      LiveTVTab(playlist: widget.playlist),
       MoviesTab(playlist: widget.playlist),
       SeriesTab(playlist: widget.playlist),
       const SettingsTab(),

lib/features/iptv/widgets/live_tv_tab.dart

@@ -4,10 +4,13 @@ import 'package:cached_network_image/cached_network_image.dart';
 import '../providers/xtream_provider.dart';
 import '../screens/player_screen.dart';
 import '../../../core/models/iptv_models.dart';
+import '../../../core/models/playlist_config.dart';
 
 /// Live TV tab with group-based pagination
 class LiveTVTab extends ConsumerStatefulWidget {
-  const LiveTVTab({super.key});
+  final PlaylistConfig playlist;
+
+  const LiveTVTab({super.key, required this.playlist});
 
   @override
   ConsumerState<LiveTVTab> createState() => _LiveTVTabState();
@@ -26,7 +29,8 @@ class _LiveTVTabState extends ConsumerState<LiveTVTab>
   Widget build(BuildContext context) {
     super.build(context);
 
-    final channelsAsync = ref.watch(liveChannelsProvider);
+    final service = ref.watch(xtreamServiceProvider(widget.playlist));
+    final channelsAsync = ref.watch(liveChannelsByPlaylistProvider(widget.playlist));
 
     return channelsAsync.when(
       data: (groupedChannels) {