feat(player): 首页进详情与播放页改为淡入转场

lib/core/navigation/fade_page_route.dart

@@ -0,0 +1,17 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/widgets.dart';
+
+/// 无位移的短促淡入转场。
+class FadePageRoute<T> extends PageRouteBuilder<T> {
+  FadePageRoute({required WidgetBuilder builder, super.settings})
+    : super(
+        transitionDuration: const Duration(milliseconds: 220),
+        reverseTransitionDuration: const Duration(milliseconds: 180),
+        pageBuilder: (context, _, _) => builder(context),
+        transitionsBuilder: (context, animation, _, child) => FadeTransition(
+          opacity: CurvedAnimation(parent: animation, curve: Curves.easeOut),
+          child: child,
+        ),
+      );
+}

lib/pages/player/open_player.dart

@@ -7,6 +7,7 @@ import '../../core/data/models/drama.dart';
 import '../../core/data/services/catalog_controller.dart';
 import '../../core/data/services/download_controller.dart';
 import '../../core/data/services/wallet_controller.dart';
+import '../../core/navigation/fade_page_route.dart';
 import 'player_view.dart';
 
 /// 目录卡片统一入口：补齐详情后直接进入全屏播放页。
@@ -29,7 +30,7 @@ Future<void> playDramaFromCatalog(
       ? 0
       : playable.episodes.indexWhere((episode) => episode.id == episodeId);
   await Navigator.of(context).push(
-    MaterialPageRoute<void>(
+    FadePageRoute<void>(
       builder: (_) => PlayerPage(
         drama: playable,
         initialIndex: index < 0 ? 0 : index,

lib/pages/player/player_logic.dart

@@ -21,6 +21,7 @@ import '../../core/data/services/playback_session.dart';
 import '../../core/data/services/video_player_port.dart';
 import '../../core/data/services/wallet_controller.dart';
 import '../../core/formatting/localized_content.dart';
+import '../../core/navigation/fade_page_route.dart';
 import '../../l10n/app_localizations.dart';
 import '../discover/discover_types.dart';
 import '../discover/discover_view.dart';
@@ -625,7 +626,7 @@ class PlayerLogic extends ChangeNotifier {
     try {
       if (!context.mounted) return;
       await Navigator.of(context).push(
-        MaterialPageRoute<void>(
+        FadePageRoute<void>(
           builder: (_) =>
               DramaDetailPage(drama: queue.entryAt(session.currentIndex).drama),
         ),
@@ -646,7 +647,7 @@ class PlayerLogic extends ChangeNotifier {
     await saveCurrentProgress();
     if (!context.mounted) return;
     await Navigator.of(context).push(
-      MaterialPageRoute<void>(
+      FadePageRoute<void>(
         builder: (_) => PlayerPage(
           drama: drama,
           initialIndex: index,