diff --git a/.trae/documents/fix-sticker-serving-plan.md b/.trae/documents/fix-sticker-serving-plan.md
new file mode 100644
index 0000000..3c172de
--- /dev/null
+++ b/.trae/documents/fix-sticker-serving-plan.md
@@ -0,0 +1,55 @@
+# 修复生产环境表情图片无法显示 Implementation Plan
+
+## Repository Research
+
+### 问题分析
+
+表情图片在生产部署后无法加载，原因是 **Go 后端缺少 `/stickers/*` 路由的静态文件服务注册**。
+
+当前架构：
+1. 前端 emoji 数据中的 URL 为 `/stickers/{platform}/{file}.avif`（在 [emojiData.ts](file:///c:/Users/freefire/Documents/jiang13-forum/frontend/src/data/stickers/emojiData.ts) 中通过 `toLocalUrl()` 生成）
+2. Vite 构建时将 `frontend/public/stickers/` 原样复制到 `embed_static/static/spa/stickers/`
+3. Go 的 `//go:embed static/*` 会将 `embed_static/static/` 下所有文件（包括 stickers）打包进二进制
+4. 但 [embed.go](file:///c:/Users/freefire/Documents/jiang13-forum/embed_static/embed.go) 的 `SetupEmbed()` **只注册了 `/assets/*filepath` 路由**（用于 JS/CSS chunk），没有注册 `/stickers/*filepath`
+5. 同时 `IsSPARoute()` 函数也没有排除 `/stickers` 前缀，导致请求被 SPA NoRoute fallback 处理，返回 index.html 而非图片
+
+开发模式之所以正常，是因为 Vite dev server 自动托管了 `public/stickers/` 下的静态文件。
+
+### 当前代码状态
+
+- `embed.go` 第 13 行: `//go:embed static/*` — 正确嵌入了所有静态资源（含 stickers）
+- `embed.go` 第 33-43 行: `SetupEmbed()` — 只处理了 `static/spa/assets`，缺少 stickers 路由
+- `embed.go` 第 63-77 行: `IsSPARoute()` — 缺少 `/stickers` 前缀排除
+
+## Files and Modules
+
+- `embed_static/embed.go`: 新增 `/stickers/*filepath` 文件服务路由；在 `IsSPARoute` 中排除 `/stickers` 前缀
+
+## Implementation Steps
+
+1. **在 `SetupEmbed` 中注册 `/stickers` 路由**
+   - 参照现有 `/assets` 路由的模式，添加对 `static/spa/stickers` 子目录的文件服务
+   - 使用 `fs.Sub(staticFS, "static/spa/stickers")` 获取 stickers 子文件系统
+   - 注册 `GET /stickers/*filepath` 路由，直接透传，不设置长期缓存（表情可能更新）
+
+2. **在 `IsSPARoute` 中排除 `/stickers` 前缀**
+   - 在现有 `strings.HasPrefix(path, "/assets")` 附近添加 `strings.HasPrefix(path, "/stickers")`
+   - 确保表情请求不会被 SPA fallback 拦截
+
+## Dependencies and Considerations
+
+- stickers 目录下存储的是 `.avif` 图片文件，不需要设置特殊 MIME type（http.FileServer 会根据扩展名自动识别）
+- stickers 资源不含哈希指纹，不应设置 `immutable` 缓存头（与 `/assets` 不同），但可以设置短过期缓存
+- 需确保 `fs.Sub` 路径与实际构建输出路径一致：`embed_static/static/spa/stickers/`
+
+## Validation
+
+- 重新构建前端：`cd frontend && npm run build`
+- 重新构建 Go 二进制：`go build -o jiang13-linux-amd64`
+- 部署后访问 `/stickers/tieba/tb_01.avif` 应能直接返回图片内容（HTTP 200）
+- 在评论框中打开表情选择器，所有平台的表情应正常显示
+
+## Risks
+
+- **风险**: 如果未来在 `public/` 下新增其他静态资源目录（如 `avatars/`、`flags/` 等），需要同样在 `embed.go` 中注册对应路由
+- **应对**: 可考虑后续重构为自动扫描 `public/` 下所有子目录并自动注册路由，或改为统一的 SPA 静态文件服务方案
diff --git a/embed_static/embed.go b/embed_static/embed.go
index aad0da8..d3724ee 100644
--- a/embed_static/embed.go
+++ b/embed_static/embed.go
@@ -39,6 +39,15 @@ func SetupEmbed(r *gin.Engine) error {
 			fileServer.ServeHTTP(c.Writer, c.Request)
 		})
 	}
+
+	if sub, err := fs.Sub(staticFS, "static/spa/stickers"); err == nil {
+		fileServer := http.StripPrefix("/stickers", http.FileServer(http.FS(sub)))
+		r.GET("/stickers/*filepath", func(c *gin.Context) {
+			// stickers 不含哈希指纹，设置适中的缓存
+			c.Header("Cache-Control", "public, max-age=86400")
+			fileServer.ServeHTTP(c.Writer, c.Request)
+		})
+	}
 	return nil
 }
 
@@ -69,6 +78,7 @@ func IsSPARoute(path string) bool {
 		strings.HasPrefix(path, "/uploads") ||
 		strings.HasPrefix(path, "/media") ||
 		strings.HasPrefix(path, "/assets") ||
+		strings.HasPrefix(path, "/stickers") ||
 		strings.HasPrefix(path, "/oauth") ||
 		strings.HasPrefix(path, "/.well-known") {
 		return false
diff --git a/frontend/src/components/CommentEditor.tsx b/frontend/src/components/CommentEditor.tsx
index 7ce81d3..de1a841 100644
--- a/frontend/src/components/CommentEditor.tsx
+++ b/frontend/src/components/CommentEditor.tsx
@@ -8,7 +8,7 @@ import Placeholder from '@tiptap/extension-placeholder';
 import Underline from '@tiptap/extension-underline';
 import DOMPurify from 'dompurify';
 import {
-  Bold, Italic, Underline as UnderlineIcon, Strikethrough, Quote,
+  Bold, Italic, Underline as UnderlineIcon, Strikethrough,
   List, ListOrdered, Code, Link as LinkIcon, Image as ImageIcon,
 } from 'lucide-react';
 import { POST_CONTENT_PURIFY_CONFIG } from '../utils/postContent';
@@ -229,28 +229,17 @@ const CommentEditor = forwardRef<CommentEditorHandle, Props>(function CommentEdi
     return <div className="comment-editor"><div className="article-editor-bar" /><div className="article-editor-body" /></div>;
   }
 
-  const tools: { icon: React.ReactNode; title: string; active?: boolean; action: () => void }[] = [
-    { icon: <strong>H</strong>, title: '标题', active: editor.isActive('heading'), action: () => {
-      for (let l = 2; l <= 4; l++) {
-        if (editor.isActive('heading', { level: l })) {
-          if (l === 4) editor.chain().focus().setParagraph().run();
-          else editor.chain().focus().toggleHeading({ level: (l + 1) as 2 | 3 | 4 }).run();
-          return;
-        }
-      }
-      editor.chain().focus().toggleHeading({ level: 2 }).run();
-    }},
+  const tools: { icon: React.ReactNode; title: string; active?: boolean; action: () => void; className?: string }[] = [
     { icon: <Bold size={15} />, title: '加粗', active: editor.isActive('bold'), action: () => editor.chain().focus().toggleBold().run() },
     { icon: <Italic size={15} />, title: '斜体', active: editor.isActive('italic'), action: () => editor.chain().focus().toggleItalic().run() },
     { icon: <UnderlineIcon size={15} />, title: '下划线', active: editor.isActive('underline'), action: () => editor.chain().focus().toggleUnderline().run() },
     { icon: <Strikethrough size={15} />, title: '删除线', active: editor.isActive('strike'), action: () => editor.chain().focus().toggleStrike().run() },
-    { icon: <Quote size={15} />, title: '引用', active: editor.isActive('blockquote'), action: () => editor.chain().focus().toggleBlockquote().run() },
     { icon: <List size={15} />, title: '无序列表', active: editor.isActive('bulletList'), action: () => editor.chain().focus().toggleBulletList().run() },
     { icon: <ListOrdered size={15} />, title: '有序列表', active: editor.isActive('orderedList'), action: () => editor.chain().focus().toggleOrderedList().run() },
     { icon: <Code size={15} />, title: '代码块', active: editor.isActive('codeBlock'), action: openCodeBlockDialog },
     { icon: <LinkIcon size={15} />, title: '链接', active: editor.isActive('link'), action: setLink },
     { icon: <ImageIcon size={15} />, title: '上传图片', action: setImage },
-    { icon: <span className="article-tool-btn__owo">OwO</span>, title: '表情 OwO', active: showSticker, action: () => setShowSticker(v => !v) },
+    { icon: <span className="article-tool-btn__owo">OwO</span>, title: '表情 OwO', active: showSticker, action: () => setShowSticker(v => !v), className: 'article-tool-btn--owo' },
   ];
 
   return (
@@ -262,7 +251,7 @@ const CommentEditor = forwardRef<CommentEditorHandle, Props>(function CommentEdi
               <button
                 ref={i === tools.length - 1 ? stickerBtnRef : undefined}
                 type="button"
-                className={`article-tool-btn${t.active ? ' active' : ''}`}
+                className={`article-tool-btn${t.active ? ' active' : ''}${t.className ? ` ${t.className}` : ''}`}
                 onMouseDown={e => e.preventDefault()}
                 onClick={t.action}
                 aria-label={t.title}
diff --git a/frontend/src/styles/global.css b/frontend/src/styles/global.css
index 17f048d..bb7eef3 100644
--- a/frontend/src/styles/global.css
+++ b/frontend/src/styles/global.css
@@ -5561,19 +5561,24 @@ a.post-title:visited {
   width: 28px;
   height: 28px;
   border-radius: 5px;
+  padding: 0;
 }
 
-.comment-editor .article-tool-btn strong { font-size: 11px; }
+.comment-editor .article-tool-btn--owo {
+  width: auto;
+  min-width: 28px;
+  padding: 0 8px;
+}
 
-/* OwO 文本按钮：与 SVG 图标视觉对齐 */
+/* OwO 文本按钮：与 SVG 图标视觉对齐，fill button area for consistent focus ring */
 .article-tool-btn__owo {
   font-weight: 700;
   font-size: 12px;
   letter-spacing: 0.5px;
   line-height: 1;
-  display: inline-block;
-  transform: translateY(-0.5px);
-  height: 12px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .comment-editor .article-editor-body {
@@ -5642,6 +5647,9 @@ a.post-title:visited {
   .sticker-picker-grid { grid-template-columns: repeat(4, 1fr); }
   .sticker-picker-tab { padding: 6px 10px; font-size: 12px; }
   .comment-editor .article-tool-btn { width: 30px; height: 30px; }
+  .comment-editor .article-tool-btn--owo { width: auto; min-width: 30px; padding: 0 8px; }
+  .comment-editor .article-editor-tools { flex-wrap: wrap; }
+  .comment-editor .article-editor-bar { padding: 4px 6px; }
 }
 
 /* Waline 嵌套评论列表 — 与正文共用 .page-wrap 滚动 */
@@ -8099,6 +8107,11 @@ button.profile-stat:hover strong {
   color: var(--j13-green);
 }
 
+.article-tool-btn:focus-visible {
+  outline: 2px solid var(--j13-green);
+  outline-offset: 1px;
+}
+
 .article-tool-btn.active {
   background: rgba(24, 160, 88, 0.12);
   color: var(--j13-green);
diff --git a/jiang13-linux-amd64 b/jiang13-linux-amd64
new file mode 100644
index 0000000..601adb6
Binary files /dev/null and b/jiang13-linux-amd64 differ