feat: 优化 Skills URL 自动识别

- 新增 /api/fetch-skill-info 接口识别 GitHub skills 仓库
- 解析 skill markdown 的简介、应用场景和包含内容
- Skills 创建页支持一键自动填充标题、简介、来源链接

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -1909,6 +1909,56 @@ def create_app(config_name='default'):
                 'message': f'抓取失败: {str(e)}'
             }), 500
 
+    @app.route('/api/fetch-skill-info', methods=['POST'])
+    @login_required
+    def fetch_skill_info():
+        """抓取 Skill 信息（GitHub 仓库）"""
+        # 只允许管理员访问
+        if not isinstance(current_user, AdminModel):
+            return jsonify({'success': False, 'message': '无权访问'}), 403
+
+        try:
+            data = request.get_json()
+            url = data.get('url', '').strip()
+
+            if not url:
+                return jsonify({
+                    'success': False,
+                    'message': '请提供 GitHub 仓库URL'
+                }), 400
+
+            # 创建抓取器
+            fetcher = WebsiteFetcher(timeout=15)
+
+            # 抓取 Skill 信息
+            info = fetcher.fetch_skill_info(url)
+
+            if not info:
+                return jsonify({
+                    'success': False,
+                    'message': '无法获取 Skill 信息，请检查 URL 是否为有效的 GitHub 仓库'
+                })
+
+            return jsonify({
+                'success': True,
+                'data': {
+                    'name': info.get('name', ''),
+                    'short_desc': info.get('short_desc', ''),
+                    'description': info.get('description', ''),
+                    'github_url': info.get('github_url', ''),
+                    'source_repo': info.get('source_repo', ''),
+                    'source_type': 'github',
+                    'usage': info.get('usage', ''),
+                    'examples': info.get('examples', '')
+                }
+            })
+
+        except Exception as e:
+            return jsonify({
+                'success': False,
+                'message': f'抓取失败: {str(e)}'
+            }), 500
+
     @app.route('/api/upload-logo', methods=['POST'])
     @login_required
     def upload_logo():
@@ -3417,6 +3467,7 @@ Sitemap: {}sitemap.xml
 
     # Skills管理视图
     class SkillAdmin(SecureModelView):
+        create_template = 'admin/skill/create.html'
         can_edit = True
         can_delete = True
         can_create = True