新增epub书摘，高亮文字，适配平板

lib/utils/epub/reader_dao.dart

@@ -145,6 +145,49 @@ class ReaderDao {
     );
   }
 
+  // ─── highlights / annotations (epub) ──────────────────────
+
+  /// 保存 EPUB 高亮批注
+  Future<int> saveHighlight(Map<String, dynamic> annotation) async {
+    final db = await _db.database;
+    return db.insert('book_annotations', {
+      ...annotation,
+      'type': 'highlight',
+    });
+  }
+
+  /// 获取某 book_id（books.id）的所有 EPUB 高亮
+  Future<List<Map<String, dynamic>>> getHighlightsByBookId(
+      String bookId) async {
+    final db = await _db.database;
+    return db.query(
+      'book_annotations',
+      where: 'book_id = ? AND type = ?',
+      whereArgs: [bookId, 'highlight'],
+      orderBy: 'created_at DESC',
+    );
+  }
+
+  /// 删除高亮
+  Future<int> deleteHighlight(int id) async {
+    final db = await _db.database;
+    return db.delete(
+      'book_annotations',
+      where: 'id = ? AND type = ?',
+      whereArgs: [id, 'highlight'],
+    );
+  }
+
+  /// 删除摘抄对应的蓝色高亮标注（通过内容匹配）
+  Future<void> deleteExcerptHighlightByContent(String readerBookId, String content) async {
+    final db = await _db.database;
+    await db.delete(
+      'book_annotations',
+      where: 'book_id = ? AND content = ? AND color = ?',
+      whereArgs: [readerBookId, content, 'excerpt'],
+    );
+  }
+
   // ─── bookmarks ──────────────────────────────────────────────────
 
   /// 获取某本书的所有书签

lib/utils/epub/reader_scripts.dart

@@ -98,5 +98,5 @@ body.lumina-force-override-font,body.lumina-force-override-font *{font-family:va
 ''';
 
 const String kSkeletonCss = r'''
-html,body{margin:0;padding:0;width:100vw;height:100vh;overflow:hidden;background-color:var(--lumina-surface-color, #FFFFFF)!important}#frame-container{position:absolute;top:0;left:0;right:0;bottom:0;background-color:var(--lumina-surface-color, #FFFFFF)!important;overflow:hidden}iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;background-color:var(--lumina-surface-color, #FFFFFF)!important;will-change:opacity;transition:none;pointer-events:none}
+html,body{margin:0;padding:0;width:100vw;height:100vh;overflow:hidden;background-color:var(--lumina-surface-color, #FFFFFF)!important}#frame-container{position:absolute;top:0;left:0;right:0;bottom:0;background-color:var(--lumina-surface-color, #FFFFFF)!important;overflow:hidden}iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;background-color:var(--lumina-surface-color, #FFFFFF)!important;will-change:opacity;transition:none;touch-action:none;}
 ''';

lib/utils/user_prefs.dart

@@ -242,6 +242,10 @@ class UserPrefs {
   String get dismissedVersion => prefs.getString('dismissedVersion') ?? '';
   Future<bool> setDismissedVersion(String value) => prefs.setString('dismissedVersion', value);
 
+  /// 更新提醒 snooze 到指定时间戳（ms），24 小时内不弹
+  int get dismissedUpdateUntil => prefs.getInt('dismissedUpdateUntil') ?? 0;
+  Future<bool> setDismissedUpdateUntil(int value) => prefs.setInt('dismissedUpdateUntil', value);
+
   // ========== EPUB 阅读器 ==========
 
   /// EPUB 阅读器字体大小
@@ -251,4 +255,8 @@ class UserPrefs {
   /// EPUB 书架视图模式: 0=宽松, 1=紧凑
   int get epubViewMode => prefs.getInt('epubViewMode') ?? 0;
   Future<bool> setEpubViewMode(int value) => prefs.setInt('epubViewMode', value);
+
+  /// EPUB 句读列表视图模式: 0=瀑布流, 1=列表
+  int get highlightsViewMode => prefs.getInt('highlightsViewMode') ?? 0;
+  Future<bool> setHighlightsViewMode(int value) => prefs.setInt('highlightsViewMode', value);
 }