chore(spec): 归档 blog-5l——三任务收敛（预览一致性/排版提醒/瞬间置顶隐藏）

Spec: 2026-11-05_blog-5l-admin-preview-moments

Co-authored-by: GLM-5.3

public/admin/typography-editor.js

@@ -133,7 +133,7 @@
     label: '排版（字体/颜色）',
     icon: 'format_paint',
     type: 'inline',
-    pattern: /<span class="(?<cls>[a-z0-9-]+)">(?<text>[^<]*?)<\/span>/,
+    pattern: /<span class="(?<cls>[a-z0-9- ]+)">(?<text>[^<]*?)<\/span>/,  // 多类空格分隔（font-kai c-red）也匹配
     toInline: ({ cls = '', text = '' }) => `<span class="${cls}">${text}</span>`,
     toPreview: ({ cls = '', text = '' }) => {
       const span = document.createElement('span');