🎵 Feature: Enhanced MiniPlayer (Phase 2, Part 8/X) — Now-Playing Widget

- Größeres MiniPlayer-Widget auf allen Non-Player-Screens (80px statt 60px)
- Größeres Album-Cover (64px statt 44px) mit besserer Sichtbarkeit
- Skip-Buttons (⏮️ Vorheriges + ⏭️ Nächstes) für schnelle Navigation
- Progress-Bar zeigt Wiedergabe-Position in Echtzeit
- Besseres Styling + Schrift-Gewicht für Titel
- Funktioniert wie Home-Widget: zeigt überall was gerade spielt

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XJzQjUtnvYUtHdnTs3iCru

lib/player/mini_player.dart

@@ -26,23 +26,27 @@ class MiniPlayer extends StatelessWidget {
             onTap: () => Navigator.of(context).push(MaterialPageRoute(
               builder: (_) => const NowPlayingScreen(),
             )),
+            child: Column(
+              children: [
+                Expanded(
                   child: SizedBox(
-              height: 60,
+                    height: 80,
                     child: Row(
                       children: [
-                  const SizedBox(width: 8),
+                        const SizedBox(width: 12),
                         Padding(
                           padding: const EdgeInsets.all(8),
-                    child: CoverImage(artUri: item.artUri, size: 44, radius: 6),
+                          child: CoverImage(artUri: item.artUri, size: 64, radius: 8),
                         ),
-                  const SizedBox(width: 8),
+                        const SizedBox(width: 12),
                         Expanded(
                           child: Column(
                             mainAxisAlignment: MainAxisAlignment.center,
                             crossAxisAlignment: CrossAxisAlignment.start,
                             children: [
                               Text(item.title,
-                            maxLines: 1, overflow: TextOverflow.ellipsis),
+                                  maxLines: 1, overflow: TextOverflow.ellipsis,
+                                  style: const TextStyle(fontWeight: FontWeight.w600)),
                               Text(item.artist ?? 'Unbekannt',
                                   maxLines: 1,
                                   overflow: TextOverflow.ellipsis,
@@ -55,17 +59,54 @@ class MiniPlayer extends StatelessWidget {
                           stream: handler.playbackState,
                           builder: (context, snap) {
                             final playing = snap.data?.playing ?? false;
-                      return IconButton(
+                            return Row(
+                              mainAxisSize: MainAxisSize.min,
+                              children: [
+                                IconButton(
+                                  icon: const Icon(Icons.skip_previous),
+                                  onPressed: handler.skipToPrevious,
+                                ),
+                                IconButton(
                                   tooltip: playing ? 'Pause' : 'Abspielen',
-                        icon: Icon(playing ? Icons.pause : Icons.play_arrow),
+                                  icon: Icon(playing ? Icons.pause : Icons.play_arrow, size: 28),
                                   onPressed: playing ? handler.pause : handler.play,
+                                ),
+                                IconButton(
+                                  icon: const Icon(Icons.skip_next),
+                                  onPressed: handler.skipToNext,
+                                ),
+                              ],
+                            );
+                          },
+                        ),
+                        const SizedBox(width: 8),
+                      ],
+                    ),
+                  ),
+                ),
+                StreamBuilder<Duration?>(
+                  stream: handler.durationStream,
+                  builder: (context, dSnap) {
+                    final duration = dSnap.data ?? Duration.zero;
+                    return StreamBuilder<Duration>(
+                      stream: handler.positionStream,
+                      builder: (context, pSnap) {
+                        final position = pSnap.data ?? Duration.zero;
+                        return LinearProgressIndicator(
+                          value: duration.inMilliseconds > 0
+                              ? (position.inMilliseconds / duration.inMilliseconds).clamp(0.0, 1.0)
+                              : 0,
+                          minHeight: 3,
+                          backgroundColor: Colors.white12,
+                          valueColor: const AlwaysStoppedAnimation(MeloTheme.red),
+                        );
+                      },
                     );
                   },
                 ),
               ],
             ),
           ),
-          ),
         );
       },
     );