feat: 编辑器与帖子展示布局优化 + 新增个人空间

- 编辑器投稿页布局优化：标题与编辑器高度动态适配，工具栏与内容区视觉对齐
- 稿件展示页布局优化：MD 渲染区与评论区视觉分离，代码块主题微调
- CSRF 中间件：图像上传端点豁免，解决 Vditor 拖拽/粘贴上传 403
- Post 状态映射、GetGinUser、SaveUploadedFile 提取至 common 包，遵循审计建议
- 新增个人空间功能：/space（需登录）重定向到 /space/:uid，/space/:uid 公开访问
- 空间页模板：参考 B 站布局，展示头像、用户名、个性签名、UID、加入时间及稿件列表
- 导航栏：用户名链接指向 /space，新增「设置」入口
- 分层实现：SpaceController → SpaceService → PostRepo.FindByUserID，严格 ISP 接口隔离

templates/MetaLab-2026/html/layout/header.html

@@ -4,6 +4,14 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 {{if .CSRFToken}}<meta name="csrf-token" content="{{.CSRFToken}}">{{end}}
+{{if .OgTitle}}
+<meta property="og:title" content="{{.OgTitle}}">
+<meta property="og:type" content="article">
+<meta property="og:site_name" content="MetaLab">
+{{if .OgDescription}}<meta property="og:description" content="{{.OgDescription}}">{{end}}
+{{if .OgImage}}<meta property="og:image" content="{{.OgImage}}">{{end}}
+{{if .OgURL}}<meta property="og:url" content="{{.OgURL}}">{{end}}
+{{end}}
 <title>{{.Title}} - MetaLab</title>
 <link rel="stylesheet" href="/static/css/common.css">
 {{if .ExtraCSS}}

templates/MetaLab-2026/html/layout/nav.html

@@ -14,7 +14,8 @@
                     <span class="nav-bell-badge" id="msgBadge" style="display:none">0</span>
                 </a>
             </li>
-            <li><a href="/settings/profile" class="nav-user">{{.Username}}</a></li>
+            <li><a href="/space" class="nav-user">{{.Username}}</a></li>
+            <li><a href="/settings/profile" class="nav-settings">设置</a></li>
             <li><a href="javascript:void(0)" class="nav-logout" id="logoutBtn">退出</a></li>
             {{else}}
             <li><a href="/auth/login" class="nav-login">登录</a></li>

templates/MetaLab-2026/html/posts/index.html

@@ -29,7 +29,7 @@
                 <a href="/posts/{{.ID}}">{{.Title}}</a>
             </h2>
             <div class="post-card-meta">
-                <span class="post-author">{{if .AuthorName}}{{.AuthorName}}({{.UserID}}){{else}}UID{{.UserID}}{{end}}</span>
+                <span class="post-author">{{if .AuthorName}}{{.AuthorName}}{{else}}该用户已注销{{end}}</span>
                 <span class="post-time">{{.CreatedAt.Format "2006-01-02 15:04"}}</span>
             </div>
             <p class="post-card-summary">{{if .Excerpt}}{{.Excerpt}}{{else}}{{printf "%.200s" .Body}}{{end}}</p>

templates/MetaLab-2026/html/posts/new.html

@@ -24,6 +24,30 @@
             <div class="editor-pane">
                 <div id="vditor"></div>
             </div>
+            <aside class="editor-sidebar">
+                <div class="editor-sidebar-section">
+                    <h4>快捷语法</h4>
+                    <ul class="tips-list">
+                        <li><code>#</code> <code>##</code> <code>###</code> 标题</li>
+                        <li><code>**粗体**</code> <code>*斜体*</code></li>
+                        <li><code>`行内代码`</code></li>
+                        <li><code>```</code> 代码块</li>
+                        <li><code>&gt;</code> 引用</li>
+                        <li><code>-</code> 无序列表</li>
+                        <li><code>[文字](链接)</code></li>
+                        <li><code>![图片](链接)</code></li>
+                    </ul>
+                </div>
+                <div class="editor-sidebar-section">
+                    <h4>发布提示</h4>
+                    <ul class="tips-list">
+                        <li>标题控制在 50 字以内</li>
+                        <li>正文清晰分段，便于阅读</li>
+                        <li>代码使用代码块包裹</li>
+                        <li>Ctrl+S 快速保存草稿</li>
+                    </ul>
+                </div>
+            </aside>
         </div>
 
         {{/* 状态栏 */}}

templates/MetaLab-2026/html/posts/show.html

@@ -8,7 +8,7 @@
         <header class="post-detail-header">
             <h1 class="post-detail-title">{{.Post.Title}}</h1>
             <div class="post-detail-meta">
-                <span class="post-author">{{if .Post.AuthorName}}{{.Post.AuthorName}}({{.Post.UserID}}){{else}}UID{{.Post.UserID}}{{end}}</span>
+                <span class="post-author">{{if .Post.AuthorName}}{{.Post.AuthorName}}{{else}}该用户已注销{{end}}</span>
                 <span class="post-time">{{.Post.CreatedAt.Format "2006-01-02 15:04"}}</span>
                 {{if ne .Post.Status "approved"}}
                 <span class="post-status post-status-{{.Post.Status}}">{{index $.StatusNames .Post.Status}}</span>
@@ -57,6 +57,18 @@
         cdn: '/static/vditor',
         theme: { current: 'light', path: '/static/vditor/dist/css/content-theme' },
         hljs: { style: 'github-dark', enable: true },
+        after: function() {
+            // 外部链接自动加 nofollow + target="_blank"，避免权重流失
+            var host = window.location.host;
+            var links = el.querySelectorAll('a[href^="http"]');
+            for (var i = 0; i < links.length; i++) {
+                var a = links[i];
+                if (a.host && a.host !== host) {
+                    a.setAttribute('rel', 'nofollow noopener noreferrer');
+                    a.setAttribute('target', '_blank');
+                }
+            }
+        }
     });
 
     // Vditor.preview() 渲染 MD，shortcode 占位 div 原样保留

templates/MetaLab-2026/html/space/index.html

@@ -0,0 +1,93 @@
+{{template "layout/header.html" .}}
+<body>
+
+{{template "layout/nav.html" .}}
+
+{{if .Error}}
+<div class="space-error">
+    <div class="container">
+        <h1>{{.Error}}</h1>
+        <a href="/" class="btn btn-primary">返回首页</a>
+    </div>
+</div>
+{{else}}
+<div class="space-page">
+    <!-- 用户信息头部 -->
+    <div class="space-header">
+        <div class="container space-header-inner">
+            <div class="space-avatar">
+                {{if .SpaceUser.Avatar}}
+                <img src="{{.SpaceUser.Avatar}}" alt="{{.SpaceUser.Username}}">
+                {{else}}
+                <div class="space-avatar-placeholder">{{slice .SpaceUser.Username 0 1}}</div>
+                {{end}}
+            </div>
+            <div class="space-info">
+                <h1 class="space-username">{{.SpaceUser.Username}}</h1>
+                <p class="space-bio">{{if .SpaceUser.Bio}}{{.SpaceUser.Bio}}{{else}}&nbsp;{{end}}</p>
+                <div class="space-meta">
+                    <span class="space-uid">UID: {{.SpaceUser.ID}}</span>
+                    <span class="space-divider">·</span>
+                    <span class="space-joined">加入于 {{.SpaceUser.CreatedAt.Format "2006-01-02"}}</span>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- 内容区域 -->
+    <div class="container space-content">
+        <!-- 统计栏 -->
+        <div class="space-stats">
+            <div class="space-stat-item">
+                <span class="space-stat-num">{{.Total}}</span>
+                <span class="space-stat-label">稿件</span>
+            </div>
+        </div>
+
+        <!-- 稿件列表 -->
+        <div class="space-section">
+            <h2 class="space-section-title">稿件</h2>
+
+            {{if eq (len .Posts) 0}}
+            <div class="empty-state">暂无稿件</div>
+            {{else}}
+            <div class="space-posts-list">
+                {{range .Posts}}
+                <article class="space-post-card">
+                    <div class="space-post-main">
+                        <h3 class="space-post-title">
+                            <a href="/posts/{{.ID}}">{{.Title}}</a>
+                        </h3>
+                        <p class="space-post-excerpt">{{if .Excerpt}}{{.Excerpt}}{{else}}{{printf "%.200s" .Body}}{{end}}</p>
+                        <div class="space-post-meta">
+                            <span class="space-post-status">已发布</span>
+                            <span class="space-post-time">{{.CreatedAt.Format "2006-01-02"}}</span>
+                        </div>
+                    </div>
+                </article>
+                {{end}}
+            </div>
+            {{end}}
+
+            <!-- 分页 -->
+            {{if gt .TotalPages 1}}
+            <div class="pagination">
+                {{if gt .Page 1}}
+                <a href="?page={{.PrevPage}}" class="page-link">上一页</a>
+                {{end}}
+                <span class="page-info">第 {{.Page}} / {{.TotalPages}} 页 (共 {{.Total}} 条)</span>
+                {{if lt .Page .TotalPages}}
+                <a href="?page={{.NextPage}}" class="page-link">下一页</a>
+                {{end}}
+            </div>
+            {{end}}
+        </div>
+    </div>
+</div>
+{{end}}
+
+{{template "layout/footer.html" .}}
+
+<script src="/static/js/common.js"></script>
+</body>
+</html>