fix(app): Phase 1.1 紧急修复 — SyncEngine 接入 + authorId + catch 异常处理

- feat(sync): SyncEngine 接入 EditorPage, 保存时 enqueue + 网络恢复自动 trySync
- fix(editor): authorId 从 AuthBloc 获取, 替代硬编码 'local'
- fix(bloc): class_bloc/calendar/profile/parent catch(_).全部改为 debugPrint
- feat(editor): 编辑器工具栏拆分 (brush_panel/tag_panel/text_format_bar/dot_grid_painter)
- feat(editor): EditorBloc 扩展 + EditorPage 增强
- feat(search): SearchBloc 扩展搜索功能
- feat(home): HomeBloc/HomePage 增强
- feat(auth): LoginPage 增强
- feat(templates): TemplateGalleryPage 重构
- fix(web): 管理端班级/日记页面修复
- fix(server): comment_service + theme_handler 修复
- docs: 添加全链路审计报告和验证截图

app/lib/features/search/bloc/search_bloc.dart

@@ -1,7 +1,7 @@
-// 搜索 BLoC — 标签+心情筛选日记
+// 搜索 BLoC — 关键词+标签+心情筛选日记
 //
 // 状态机: SearchInitial → SearchLoading → SearchLoaded/SearchError
-// Phase 1 使用简单的标签+心情筛选，后续可扩展全文搜索。
+// 支持关键词搜索、标签筛选、心情筛选、结果分类 tab。
 
 import 'package:flutter_bloc/flutter_bloc.dart';
 
@@ -11,16 +11,21 @@ import '../../../data/repositories/journal_repository.dart';
 part 'search_event.dart';
 part 'search_state.dart';
 
-/// 搜索 BLoC — 处理标签和心情筛选日记的状态转换
+/// 搜索 BLoC
 class SearchBloc extends Bloc<SearchEvent, SearchState> {
   final JournalRepository _journalRepo;
 
+  /// 内存搜索历史（最多 10 条）
+  final List<String> _searchHistory = [];
+
   SearchBloc({required JournalRepository journalRepository})
       : _journalRepo = journalRepository,
         super(const SearchInitial()) {
     on<SearchByMood>(_onSearchByMood);
     on<SearchByTag>(_onSearchByTag);
+    on<SearchByKeyword>(_onSearchByKeyword);
     on<SearchClear>(_onSearchClear);
+    on<SearchTabChanged>(_onSearchTabChanged);
   }
 
   /// 按心情筛选日记
@@ -31,7 +36,7 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
     emit(const SearchLoading());
     try {
       if (event.mood == null) {
-        emit(const SearchLoaded());
+        emit(SearchLoaded(searchHistory: List.unmodifiable(_searchHistory)));
         return;
       }
       final results = await _journalRepo.getJournals(
@@ -42,6 +47,7 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
       emit(SearchLoaded(
         results: results,
         activeMood: event.mood!.value,
+        searchHistory: List.unmodifiable(_searchHistory),
       ));
     } catch (e) {
       emit(const SearchError('搜索失败，请重试'));
@@ -55,6 +61,7 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
   ) async {
     emit(const SearchLoading());
     try {
+      _addToHistory(event.tag);
       final results = await _journalRepo.getJournals(
         tag: event.tag,
         page: 1,
@@ -63,6 +70,47 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
       emit(SearchLoaded(
         results: results,
         activeTag: event.tag,
+        searchHistory: List.unmodifiable(_searchHistory),
+      ));
+    } catch (e) {
+      emit(const SearchError('搜索失败，请重试'));
+    }
+  }
+
+  /// 关键词搜索 — 在标题中匹配关键词
+  Future<void> _onSearchByKeyword(
+    SearchByKeyword event,
+    Emitter<SearchState> emit,
+  ) async {
+    final keyword = event.keyword.trim();
+    if (keyword.isEmpty) {
+      emit(SearchLoaded(searchHistory: List.unmodifiable(_searchHistory)));
+      return;
+    }
+
+    emit(const SearchLoading());
+    try {
+      _addToHistory(keyword);
+      // 获取所有日记并在客户端按关键词过滤
+      final allJournals = await _journalRepo.getJournals(
+        page: 1,
+        pageSize: 200,
+      );
+      final lowerKeyword = keyword.toLowerCase();
+      final results = allJournals.where((j) {
+        final titleMatch = j.title.toLowerCase().contains(lowerKeyword);
+        final excerptMatch = (j.contentExcerpt ?? '')
+            .toLowerCase()
+            .contains(lowerKeyword);
+        final tagMatch =
+            j.tags.any((t) => t.toLowerCase().contains(lowerKeyword));
+        return titleMatch || excerptMatch || tagMatch;
+      }).toList();
+
+      emit(SearchLoaded(
+        results: results,
+        activeKeyword: keyword,
+        searchHistory: List.unmodifiable(_searchHistory),
       ));
     } catch (e) {
       emit(const SearchError('搜索失败，请重试'));
@@ -74,6 +122,26 @@ class SearchBloc extends Bloc<SearchEvent, SearchState> {
     SearchClear event,
     Emitter<SearchState> emit,
   ) {
-    emit(const SearchLoaded());
+    emit(SearchLoaded(searchHistory: List.unmodifiable(_searchHistory)));
+  }
+
+  /// 切换结果分类 tab
+  void _onSearchTabChanged(
+    SearchTabChanged event,
+    Emitter<SearchState> emit,
+  ) {
+    final current = state;
+    if (current is SearchLoaded) {
+      emit(current.copyWith(activeTab: event.tab));
+    }
+  }
+
+  /// 添加到搜索历史（去重，最多 10 条）
+  void _addToHistory(String keyword) {
+    _searchHistory.remove(keyword);
+    _searchHistory.insert(0, keyword);
+    if (_searchHistory.length > 10) {
+      _searchHistory.removeLast();
+    }
   }
 }

app/lib/features/search/bloc/search_event.dart

@@ -19,7 +19,19 @@ final class SearchByTag extends SearchEvent {
   const SearchByTag(this.tag);
 }
 
+/// 关键词搜索
+final class SearchByKeyword extends SearchEvent {
+  final String keyword;
+  const SearchByKeyword(this.keyword);
+}
+
 /// 清除搜索结果
 final class SearchClear extends SearchEvent {
   const SearchClear();
 }
+
+/// 切换搜索结果分类 tab
+final class SearchTabChanged extends SearchEvent {
+  final SearchResultTab tab;
+  const SearchTabChanged(this.tab);
+}

app/lib/features/search/bloc/search_state.dart

@@ -2,6 +2,17 @@
 
 part of 'search_bloc.dart';
 
+/// 搜索结果分类 tab
+enum SearchResultTab {
+  all('全部'),
+  journal('日记'),
+  template('模板'),
+  tag('标签');
+
+  const SearchResultTab(this.label);
+  final String label;
+}
+
 /// 搜索状态基类
 sealed class SearchState {
   const SearchState();
@@ -19,7 +30,7 @@ final class SearchLoading extends SearchState {
 
 /// 搜索结果已加载
 final class SearchLoaded extends SearchState {
-  /// 搜索结果列表（空列表表示无匹配）
+  /// 日记搜索结果列表
   final List<JournalEntry> results;
 
   /// 当前活跃的心情筛选条件
@@ -28,24 +39,47 @@ final class SearchLoaded extends SearchState {
   /// 当前活跃的标签筛选条件
   final String? activeTag;
 
+  /// 当前活跃的关键词
+  final String? activeKeyword;
+
+  /// 当前选中的结果分类 tab
+  final SearchResultTab activeTab;
+
+  /// 搜索历史（内存中保存，最多 10 条）
+  final List<String> searchHistory;
+
   const SearchLoaded({
     this.results = const [],
     this.activeMood,
     this.activeTag,
+    this.activeKeyword,
+    this.activeTab = SearchResultTab.all,
+    this.searchHistory = const [],
   });
 
   /// 是否有活跃的筛选条件
-  bool get hasActiveFilter => activeMood != null || activeTag != null;
+  bool get hasActiveFilter =>
+      activeMood != null || activeTag != null || activeKeyword != null;
 
   SearchLoaded copyWith({
     List<JournalEntry>? results,
     String? activeMood,
+    bool clearActiveMood = false,
     String? activeTag,
+    bool clearActiveTag = false,
+    String? activeKeyword,
+    bool clearActiveKeyword = false,
+    SearchResultTab? activeTab,
+    List<String>? searchHistory,
   }) =>
       SearchLoaded(
         results: results ?? this.results,
-        activeMood: activeMood ?? this.activeMood,
-        activeTag: activeTag ?? this.activeTag,
+        activeMood: clearActiveMood ? null : (activeMood ?? this.activeMood),
+        activeTag: clearActiveTag ? null : (activeTag ?? this.activeTag),
+        activeKeyword:
+            clearActiveKeyword ? null : (activeKeyword ?? this.activeKeyword),
+        activeTab: activeTab ?? this.activeTab,
+        searchHistory: searchHistory ?? this.searchHistory,
       );
 }