Phase 3: Architecture refactor - consolidate folders and extract patterns

- Consolidate lib/mobile/features/iptv → lib/features/iptv
  * Move all IPTV screens, models, services, widgets to unified location
  * Update imports in main.dart and affected files
  * Remove old mobile/features/iptv directory

- Create lib/core/patterns/ for reusable implementations
  * HiveServiceBase: Template for Hive-based persistent storage
  * VideoPlayerWrapper: Abstraction for video player selection
  * StreamResolverPattern: IPTV stream resolution and validation

- Router already simplified (no kIsWeb checks, Android-only)

All changes maintain Android-only architecture and improve maintainability.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

lib/features/iptv/screens/mobile_dashboard_screen.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../core/models/playlist_config.dart';
+import '../../../widgets/mobile_scaffold.dart';
+import '../../../theme/mobile_theme.dart';
+import '../widgets/mobile_live_tv_tab.dart';
+import '../widgets/mobile_movies_tab.dart';
+import '../widgets/mobile_series_tab.dart';
+import '../widgets/mobile_settings_tab.dart';
+import '../../../providers/mobile_xtream_providers.dart';
+
+class MobileDashboardScreen extends ConsumerStatefulWidget {
+  final PlaylistConfig playlist;
+
+  const MobileDashboardScreen({
+    super.key,
+    required this.playlist,
+  });
+
+  @override
+  ConsumerState<MobileDashboardScreen> createState() =>
+      _MobileDashboardScreenState();
+}
+
+class _MobileDashboardScreenState extends ConsumerState<MobileDashboardScreen> {
+  @override
+  Widget build(BuildContext context) {
+    final currentIndex = ref.watch(mobileDashboardIndexProvider);
+
+    // Determine which tab to show
+    Widget currentTab;
+    switch (currentIndex) {
+      case 0:
+        currentTab = MobileLiveTVTab(playlist: widget.playlist);
+        break;
+      case 1:
+        currentTab = MobileMoviesTab(playlist: widget.playlist);
+        break;
+      case 2:
+        currentTab = MobileSeriesTab(playlist: widget.playlist);
+        break;
+      case 3:
+        currentTab = const MobileSettingsTab();
+        break;
+      default:
+        currentTab = MobileLiveTVTab(playlist: widget.playlist);
+    }
+
+    return Theme(
+      data: MobileTheme.darkTheme,
+      child: MobileScaffold(
+        currentIndex: currentIndex,
+        onIndexChanged: (index) {
+          ref.read(mobileDashboardIndexProvider.notifier).state = index;
+        },
+        child: currentTab,
+      ),
+    );
+  }
+}