fix: account for playback speed in "Ends at" calculation

close #392

lib/utils/formatters.dart

@@ -182,8 +182,9 @@ DurationLocale _getDurationLocale() {
 
 /// Formats the clock time at which media will finish playing, given the remaining duration.
 /// Returns a localized time string like "6:12 PM" or "18:12" depending on locale.
-String formatFinishTime(Duration remaining) {
-  final finishTime = DateTime.now().add(remaining);
+String formatFinishTime(Duration remaining, {double rate = 1.0}) {
+  final adjustedRemaining = remaining * (1.0 / rate);
+  final finishTime = DateTime.now().add(adjustedRemaining);
   final formatter = DateFormat.jm(LocaleSettings.currentLocale.languageCode);
   return formatter.format(finishTime);
 }

lib/widgets/video_controls/desktop_video_controls.dart

@@ -544,16 +544,23 @@ class DesktopVideoControlsState extends State<DesktopVideoControls> {
                     stream: widget.player.streams.duration,
                     initialData: widget.player.state.duration,
                     builder: (context, durSnap) {
-                      final position = posSnap.data ?? Duration.zero;
-                      final duration = durSnap.data ?? Duration.zero;
-                      final remaining = duration - position;
-                      if (remaining.inSeconds <= 0) return const SizedBox.shrink();
-                      return Padding(
-                        padding: const EdgeInsets.only(left: 8),
-                        child: Text(
-                          t.videoControls.endsAt(time: formatFinishTime(remaining)),
-                          style: const TextStyle(color: Colors.white70, fontSize: 13),
-                        ),
+                      return StreamBuilder<double>(
+                        stream: widget.player.streams.rate,
+                        initialData: widget.player.state.rate,
+                        builder: (context, rateSnap) {
+                          final position = posSnap.data ?? Duration.zero;
+                          final duration = durSnap.data ?? Duration.zero;
+                          final remaining = duration - position;
+                          final rate = rateSnap.data ?? 1.0;
+                          if (remaining.inSeconds <= 0) return const SizedBox.shrink();
+                          return Padding(
+                            padding: const EdgeInsets.only(left: 8),
+                            child: Text(
+                              t.videoControls.endsAt(time: formatFinishTime(remaining, rate: rate)),
+                              style: const TextStyle(color: Colors.white70, fontSize: 13),
+                            ),
+                          );
+                        },
                       );
                     },
                   );

lib/widgets/video_controls/widgets/video_timeline_bar.dart

@@ -111,8 +111,15 @@ class VideoTimelineBar extends StatelessWidget {
     if (!showFinishTime || remaining.inSeconds >= 0) {
       return _buildTimestamp(remaining);
     }
-    final text = '${formatDurationTimestamp(remaining)} · ${formatFinishTime(remaining.abs())}';
-    return Text(text, style: const TextStyle(color: Colors.white, fontSize: 14));
+    return StreamBuilder<double>(
+      stream: player.streams.rate,
+      initialData: player.state.rate,
+      builder: (context, rateSnap) {
+        final rate = rateSnap.data ?? 1.0;
+        final text = '${formatDurationTimestamp(remaining)} · ${formatFinishTime(remaining.abs(), rate: rate)}';
+        return Text(text, style: const TextStyle(color: Colors.white, fontSize: 14));
+      },
+    );
   }
 
   Widget _buildSlider(Duration position, Duration duration) {