fix(creator-studio): render math/footnote shortcodes, inline code blocks, block deletion

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/creator-studio/src/editor-content-style.ts

@@ -50,7 +50,7 @@ img { height: auto; }
 	border-radius: 4px;
 	background: linear-gradient(135deg, #3dcabd 10%, #254bdd 100%);
 	color: #fff;
-	content: attr(data-enlighter-language);
+	content: attr(data-jio-code-label);
 	font-size: 12px;
 	line-height: 1.5;
 	pointer-events: none;
@@ -117,6 +117,15 @@ img { height: auto; }
 }
 .jio-toc-placeholder::after { content: '目录将在发布后自动生成'; }
 
+/* 注释上标：编辑器里只显示序号，发布后由服务端渲染脚注列表。 */
+.jio-footnote-ref,
+.jio-footnote-ref a {
+	color: #267665;
+	font-size: 0.8em;
+	text-decoration: none;
+	vertical-align: super;
+}
+
 /* 附件链接。 */
 .jio-file-link {
 	display: inline-flex;