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/parent/views/parent_page.dart

@@ -922,7 +922,8 @@ class _JournalCard extends StatelessWidget {
     try {
       final dt = DateTime.parse(isoStr);
       return DateFormat('MM-dd').format(dt);
-    } catch (_) {
+    } catch (e) {
+      debugPrint('ParentPage._formatDate 失败: $e');
       return '';
     }
   }