feat: Add local Docker test environment setup with PowerShell script and Docker Compose.

lib/features/iptv/screens/player_screen.dart

@@ -30,6 +30,7 @@ class PlayerScreen extends ConsumerStatefulWidget {
   final String containerExtension;
   final List<Channel>? channels;
   final double? startTime;
+  final Duration? duration;
 
   const PlayerScreen({
     super.key,
@@ -40,6 +41,7 @@ class PlayerScreen extends ConsumerStatefulWidget {
     this.containerExtension = 'mp4',
     this.channels,
     this.startTime,
+    this.duration,
   });
 
   @override
@@ -133,6 +135,10 @@ class _PlayerScreenState extends ConsumerState<PlayerScreen> {
       if (startTimeOverride != null) {
         playerSrc += '&t=$startTimeOverride';
       }
+      
+      if (widget.duration != null) {
+         playerSrc += '&duration=${widget.duration!.inSeconds}';
+      }
 
       // Register View Factory (Only needed for Standard Player, but safe to do always or conditionally)
       ui_web.platformViewRegistry.registerViewFactory(_viewId, (int viewId) {

lib/features/iptv/screens/series_detail_screen.dart

@@ -280,6 +280,7 @@ class _SeriesDetailScreenState extends ConsumerState<SeriesDetailScreen> {
                 playlist: widget.playlist,
                 streamType: StreamType.series,
                 containerExtension: episode.containerExtension ?? 'mkv',
+                duration: episode.durationSecs != null ? Duration(seconds: episode.durationSecs!) : null,
               ),
             ),
           );