feat: 文章属性前端完成 — Phase 3

- 写文章页：可见性/类型/转载来源/创作声明/禁止转载 属性表单
- 类型切换联动（转载显示来源，原创显示禁止转载复选框）
- 文章详情页：私密角标、置顶标记、创作声明横幅、转载来源
- 管理后台：置顶/取消置顶操作按钮
- PostService Create/Update 签名扩展接受文章属性
- DTO/接口同步更新

templates/admin/html/posts/index.html

@@ -42,7 +42,7 @@
                     <td>{{.ID}}</td>
                     <td><a href="/posts/{{.ID}}" target="_blank" class="post-link">{{.Title}}</a>{{if .PendingBody}} <span class="revision-badge">修订中</span>{{end}}</td>
                     <td>{{if .AuthorName}}{{.AuthorName}}({{.UserID}}){{else}}UID{{.UserID}}{{end}}</td>
-                    <td><span class="status-badge status-{{.Status}}">{{index $.StatusNames .Status}}</span>{{if .IsLocked}} <span class="status-badge status-locked">已锁定</span>{{end}}</td>
+                    <td><span class="status-badge status-{{.Status}}">{{index $.StatusNames .Status}}</span>{{if .IsLocked}} <span class="status-badge status-locked">已锁定</span>{{end}}{{if .PinType}} <span class="status-badge status-pinned">📌</span>{{end}}</td>
                     <td>{{.CreatedAt.Format "2006-01-02 15:04"}}</td>
                     <td class="actions-cell">
                         <div class="action-btns">
@@ -63,6 +63,14 @@
                             {{if .IsLocked}}
                             <button class="btn btn-sm btn-success post-unlock" data-id="{{.ID}}">解锁</button>
                             {{end}}
+                            {{if eq .Status "approved"}}
+                            {{if not .PinType}}
+                            <button class="btn btn-sm btn-info post-pin" data-id="{{.ID}}" data-pin-type="global">全局置顶</button>
+                            <button class="btn btn-sm btn-info post-pin" data-id="{{.ID}}" data-pin-type="category">分类置顶</button>
+                            {{else}}
+                            <button class="btn btn-sm btn-secondary post-unpin" data-id="{{.ID}}">取消置顶</button>
+                            {{end}}
+                            {{end}}
                         </div>
                     </td>
                 </tr>

templates/admin/static/css/posts.css

@@ -80,6 +80,7 @@
 .status-approved { background: #d1fae5; color: #059669; }
 .status-rejected { background: #fee2e2; color: #dc2626; }
 .status-locked { background: #fee2e2; color: #b91c1c; }
+.status-pinned { background: #dbeafe; color: #1d4ed8; }
 
 .revision-section { margin-bottom: 24px; }
 .revision-section h2 { font-size: 16px; font-weight: 600; margin-bottom: 12px; color: #4338ca; }
@@ -111,6 +112,7 @@
 .btn-success { background: #10b981; color: #fff; }
 .btn-warning { background: #f59e0b; color: #fff; }
 .btn-danger { background: #ef4444; color: #fff; }
+.btn-info { background: #3b82f6; color: #fff; }
 
 /* 分页 */
 .pagination {

templates/admin/static/js/posts.js

@@ -52,4 +52,22 @@
             .then(function(d) { if (d.success) refreshPage(); else showToast(d.message || '操作失败', 'error'); })
             .catch(function() { showToast('操作失败', 'error'); });
     });
+
+    // 置顶
+    document.querySelectorAll('.post-pin').forEach(function(btn) {
+        btn.addEventListener('click', function() {
+            var id = btn.getAttribute('data-id');
+            var pinType = btn.getAttribute('data-pin-type');
+            api.post('/api/admin/posts/' + id + '/pin', { pin_type: pinType })
+                .then(function(d) { if (d.success) refreshPage(); else showToast(d.message || '操作失败', 'error'); })
+                .catch(function() { showToast('操作失败', 'error'); });
+        });
+    });
+
+    // 取消置顶
+    handleClick('.post-unpin', '确定取消置顶吗？', function(id) {
+        api.post('/api/admin/posts/' + id + '/unpin')
+            .then(function(d) { if (d.success) refreshPage(); else showToast(d.message || '操作失败', 'error'); })
+            .catch(function() { showToast('操作失败', 'error'); });
+    });
 })();