chore(client): 归档原型阶段未提交改动（binding/logic/view 分层与各页迭代）

为什么：客户端原型在 14d7bd3 之后又做了一轮（页面分层、发现页、分类滑动、播放器控件等），
一直留在工作区没入库。下一批账号链路要改其中的 app.dart / home_view / player_view / mine_view，
先归档这批既存改动，本批的实际 diff 才说得清边界。

只归档，不改行为：当前工作区 flutter analyze 0 问题、flutter test 148 全过。

lib/core/data/repositories/catalog_repository.dart

@@ -1,104 +1,36 @@
 import '../models/drama.dart';
+import '../models/home_feed.dart';
+import '../models/play_ticket.dart';
+import '../remote/catalog_api.dart';
 
+/// 目录数据来源：首页/发现页聚合、详情、播放票据。
+///
+/// 首页卡片不带剧集，进详情或播放时才按需取，保证列表接口足够轻。
 abstract interface class CatalogRepository {
-  Future<List<Drama>> fetchDramas();
+  Future<HomeFeed> fetchHomeFeed();
+
+  Future<HomeFeed> fetchDiscoverFeed();
+
+  Future<Drama> fetchDrama(String dramaId);
+
+  Future<PlayTicket> resolvePlay(String episodeId);
 }
 
-class DemoCatalogRepository implements CatalogRepository {
+class HttpCatalogRepository implements CatalogRepository {
+  HttpCatalogRepository(this._api);
+
+  final CatalogApi _api;
+
   @override
-  Future<List<Drama>> fetchDramas() async => const [
-    Drama(
-      id: 'the-signal-demo',
-      title: 'The Signal',
-      synopsis:
-          'A mock series for testing vertical episode playback with one reused local clip.',
-      posterAsset: 'assets/images/stitch_signal_poster_clean.png',
-      format: DramaFormat.animated,
-      episodes: [
-        Episode(
-          id: 'signal-01',
-          number: 1,
-          title: 'Episode 1',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'signal-02',
-          number: 2,
-          title: 'Episode 2',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'signal-03',
-          number: 3,
-          title: 'Episode 3',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-      ],
-    ),
-    Drama(
-      id: 'city-lights-demo',
-      title: 'City Lights & Velvet Nights',
-      synopsis:
-          'A mock romance series using the same local video for navigation testing.',
-      posterAsset: 'assets/images/stitch_city_poster_clean.png',
-      format: DramaFormat.liveAction,
-      episodes: [
-        Episode(
-          id: 'city-01',
-          number: 1,
-          title: 'Episode 1',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'city-02',
-          number: 2,
-          title: 'Episode 2',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'city-03',
-          number: 3,
-          title: 'Episode 3',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-      ],
-    ),
-    Drama(
-      id: 'vengeance-demo',
-      title: 'Vengeance Rising',
-      synopsis:
-          'A mock action series using the same local video for navigation testing.',
-      posterAsset: 'assets/images/stitch_vengeance_poster_clean.png',
-      format: DramaFormat.liveAction,
-      episodes: [
-        Episode(
-          id: 'vengeance-01',
-          number: 1,
-          title: 'Episode 1',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'vengeance-02',
-          number: 2,
-          title: 'Episode 2',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-        Episode(
-          id: 'vengeance-03',
-          number: 3,
-          title: 'Episode 3',
-          assetPath: 'assets/media/demo_clip.mp4',
-          isFree: true,
-        ),
-      ],
-    ),
-  ];
+  Future<HomeFeed> fetchHomeFeed() => _api.homeFeed();
+
+  @override
+  Future<HomeFeed> fetchDiscoverFeed() => _api.discoverFeed();
+
+  @override
+  Future<Drama> fetchDrama(String dramaId) => _api.dramaDetail(dramaId);
+
+  @override
+  Future<PlayTicket> resolvePlay(String episodeId) =>
+      _api.playTicket(episodeId);
 }

lib/core/data/repositories/watch_history_repository.dart

@@ -1,5 +1,7 @@
 import 'package:shared_preferences/shared_preferences.dart';
 
+import '../models/drama.dart';
+
 const demoProfileId = 'demo-local-v1';
 
 abstract interface class WatchHistoryRepository {
@@ -60,6 +62,17 @@ class SharedPreferencesWatchHistoryRepository
   }
 }
 
+/// 续看位置：列表卡片没有剧集列表，取不到首集时退回最近观看的那一集。
+extension WatchHistoryResume on WatchHistoryRepository {
+  Future<Duration?> resumePositionFor(String profileId, Drama drama) async {
+    final episodeId = drama.episodes.isNotEmpty
+        ? drama.episodes.first.id
+        : await lastEpisodeId(profileId, drama.id);
+    if (episodeId == null) return null;
+    return positionFor(profileId, drama.id, episodeId);
+  }
+}
+
 Duration clampResumePosition(Duration saved, Duration duration) {
   if (duration <= const Duration(milliseconds: 500)) return Duration.zero;
   if (saved <= Duration.zero) return Duration.zero;