feat(player): 剧名与选集合并为同一个弹窗

点剧名默认停在详情页签，选集入口直接停在选集页签，不再跳详情页；
详情页签补上简介、标签、收藏与相似推荐，原选集弹窗合并进来后删除。

lib/pages/player/player_logic.dart

@@ -35,12 +35,11 @@ import '../../core/theme/app_colors.dart';
 import '../../core/navigation/fade_page_route.dart';
 import '../../l10n/app_localizations.dart';
 import '../discover/search_page.dart';
-import '../drama_detail/drama_detail_view.dart';
 import '../mine/mine_types.dart';
 import '../mine/mine_view.dart';
 import 'player_view.dart';
 import 'widgets/drama_comments_sheet.dart';
-import 'widgets/episode_picker_sheet.dart';
+import 'widgets/drama_info_sheet.dart';
 
 typedef _PlaybackSnapshot = ({
   Duration position,
@@ -1294,10 +1293,7 @@ class PlayerLogic extends ChangeNotifier {
       }
       // 上一条进度写盘与续看点拉取互不依赖，并行等，少一个网络往返的首帧延迟。
       // 服务端每剧只记一条：只有"记录里的那一集"才定位，其它集从头播
-      await Future.wait([
-        pendingWrite,
-        if (!resumeLoaded) loadResumePoint(),
-      ]);
+      await Future.wait([pendingWrite, if (!resumeLoaded) loadResumePoint()]);
       if (resumePositionFor(episode.id) == null) {
         final dramaId = _dramaIdForEpisode(episode.id);
         final cached = dramaId == null
@@ -1836,22 +1832,9 @@ class PlayerLogic extends ChangeNotifier {
     if (context.mounted) Navigator.of(context).pop();
   }
 
-  Future<void> openDetail(BuildContext context) async {
-    session.setOverlayOpen(true);
-    await saveCurrentProgress();
-    try {
-      if (!context.mounted) return;
-      await Navigator.of(context).push(
-        FadePageRoute<void>(
-          builder: (_) =>
-              DramaDetailPage(drama: queue.entryAt(session.currentIndex).drama),
-        ),
-      );
-    } finally {
-      session.setOverlayOpen(false);
-    }
-    await saveCurrentProgress();
-  }
+  /// 剧名与选集共用同一个弹窗：点剧名默认停在详情页签。
+  Future<void> openDetail(BuildContext context) =>
+      _showDramaSheet(context, DramaInfoTab.detail);
 
   String? _dramaIdForEpisode(String episodeId) {
     for (final entry in queue.entries) {
@@ -1887,13 +1870,21 @@ class PlayerLogic extends ChangeNotifier {
     await resumeAfterFullPlayer();
   }
 
-  Future<void> showEpisodes(BuildContext context) async {
+  /// 选集入口：同一个弹窗，直接停在选集页签。
+  Future<void> showEpisodes(BuildContext context) =>
+      _showDramaSheet(context, DramaInfoTab.episodes);
+
+  Future<void> _showDramaSheet(
+    BuildContext context,
+    DramaInfoTab initialTab,
+  ) async {
     final entry = queue.entryAt(session.currentIndex);
     final drama = await _withFullEpisodes(context, entry.drama);
     if (!context.mounted) return;
     final homeFeed = feedDramas != null;
     final currentNumber = entry.episode.number;
     session.setOverlayOpen(true);
+    await saveCurrentProgress();
     await session.playbackSettled;
     if (!context.mounted) {
       session.setOverlayOpen(false);
@@ -1904,16 +1895,20 @@ class PlayerLogic extends ChangeNotifier {
         context: context,
         backgroundColor: AppColors.transparent,
         isScrollControlled: true,
-        builder: (_) => EpisodePickerSheet(
+        builder: (_) => DramaInfoSheet(
           drama: drama,
           currentNumber: currentNumber,
-          onSelect: (index) =>
+          initialTab: initialTab,
+          onSelectEpisode: (index) =>
               _selectFromSheet(context, drama, index, homeFeed, currentNumber),
+          onOpenRelated: (related) =>
+              unawaited(openSeriesAt(context, related, 0)),
         ),
       );
     } finally {
       session.setOverlayOpen(false);
     }
+    await saveCurrentProgress();
   }
 
   /// 列表卡片只带一集可播预览，需要完整剧集时补一次详情；