refactor: 返璞归真 - 剥离 Markdown 注入，利用 Halo 原生层级回复

- 后端 CommentReplyPublisher 删除 buildQuoteMarkdown 和 Markdown 拼接逻辑
- AI 回复直接存入纯净文本，由 Halo 原生 quoteReply 字段渲染前台层级关系
- 前端 ConversationMessage 恢复 quoteOwner/quoteContent 字段
- 前端对话弹窗添加原生 Tailwind 引用摘要框（灰色 border-l-[3px]）
- 简化 renderContent，删除 Markdown 引用正则匹配

src/main/java/top/nxxy335/commentaiautopilot/service/CommentReplyPublisher.java

@@ -81,37 +81,12 @@ public class CommentReplyPublisher {
                                    String postName, String quoteReplyName, boolean autoPublish,
                                    String personaName) {
 
-        // 1. 获取被回复的对象信息，构建 Markdown 引用
-        Mono<String> quoteMarkdownMono = Mono.empty();
-
-        if (quoteReplyName != null && !quoteReplyName.isBlank()) {
-            // 如果是回复另一条回复
-            quoteMarkdownMono = client.fetch(Reply.class, quoteReplyName)
-                .map(r -> buildQuoteMarkdown(
-                    r.getSpec().getOwner() != null ? r.getSpec().getOwner().getDisplayName() : "匿名用户",
-                    r.getSpec().getRaw() != null ? r.getSpec().getRaw() : r.getSpec().getContent()
-                ));
-        } else if (parentCommentName != null && !parentCommentName.isBlank()) {
-            // 如果是直接回复顶级评论
-            quoteMarkdownMono = client.fetch(Comment.class, parentCommentName)
-                .map(c -> buildQuoteMarkdown(
-                    c.getSpec().getOwner() != null ? c.getSpec().getOwner().getDisplayName() : "匿名用户",
-                    c.getSpec().getRaw() != null ? c.getSpec().getRaw() : c.getSpec().getContent()
-                ));
-        }
-
-        // 2. 解析 AI 角色并合并最终文本进行发布
-        return Mono.zip(resolvePersona(personaName), quoteMarkdownMono.defaultIfEmpty(""))
-            .flatMap(tuple -> {
-                ResolvedPersona persona = tuple.getT1();
-                String quoteMarkdown = tuple.getT2();
-
+        // 解析 AI 角色并直接发布纯净的回复内容
+        return resolvePersona(personaName)
+            .flatMap(persona -> {
                 String displayName = persona.displayName();
                 String email = persona.email();
 
-                // 将引用文本拼接到 AI 回复内容的最前面
-                String finalContent = quoteMarkdown.isBlank() ? replyContent : quoteMarkdown + "\n\n" + replyContent;
-
                 Reply reply = new Reply();
                 reply.setMetadata(new Metadata());
                 reply.getMetadata().setName(generateReplyName());
@@ -119,8 +94,11 @@ public class CommentReplyPublisher {
 
                 var spec = reply.getSpec();
                 spec.setCommentName(parentCommentName);
-                spec.setRaw(finalContent);     // 保存带有引用的完整 Markdown
-                spec.setContent(finalContent); // 同上
+
+                // 直接存入纯净的 AI 回复内容，不加任何 Markdown 前缀
+                spec.setRaw(replyContent);
+                spec.setContent(replyContent);
+
                 spec.setApproved(autoPublish);
                 if (autoPublish) {
                     spec.setApprovedTime(Instant.now());
@@ -130,6 +108,7 @@ public class CommentReplyPublisher {
                 spec.setAllowNotification(false);
                 spec.setHidden(false);
 
+                // Halo 原生评论组件正是靠这个字段来渲染 "回复 @某人" 的
                 if (quoteReplyName != null && !quoteReplyName.isBlank()) {
                     spec.setQuoteReply(quoteReplyName);
                 }
@@ -152,7 +131,7 @@ public class CommentReplyPublisher {
                 owner.setAnnotations(ownerAnnotations);
                 spec.setOwner(owner);
 
-                log.info("[Publisher] Creating reply for comment: {}, finalContent length: {}", parentCommentName, finalContent.length());
+                log.info("[Publisher] Creating reply for comment: {}, content length: {}", parentCommentName, replyContent.length());
 
                 return client.create(reply)
                     .doOnSuccess(created -> log.info("[Publisher] AI Persona '{}' reply published for comment: {}", displayName, parentCommentName))
@@ -160,19 +139,6 @@ public class CommentReplyPublisher {
             });
     }
 
-    /**
-     * 新增辅助方法：构建 Markdown 引用块
-     */
-    private String buildQuoteMarkdown(String username, String rawText) {
-        if (rawText == null || rawText.isBlank()) return "";
-        // 清除 HTML 标签，防止破坏 Markdown 结构
-        String plainText = org.jsoup.Jsoup.clean(rawText, org.jsoup.safety.Safelist.none()).trim();
-        // 截断过长的引用内容（超过 40 个字符加省略号）
-        String truncated = plainText.length() > 40 ? plainText.substring(0, 40) + "..." : plainText;
-        // 生成标准 Markdown Blockquote
-        return "> 💬 **@" + username + "** : " + truncated;
-    }
-
     /**
      * Resolve persona info from AiPersona extension.
      * Priority: