fix: 添加 GET /api/categories/<id> 单个分类详情API

app.py

@@ -951,6 +951,17 @@ def api_categories():
     
     return jsonify(sorted(categories, key=lambda x: x.get('order', 0)))
 
+@app.route('/api/categories/<category_id>')
+def api_category_detail(category_id):
+    """获取单个分类详情"""
+    categories = load_data(CATEGORIES_FILE)
+    category = next((c for c in categories if c['id'] == category_id), None)
+    
+    if not category:
+        return jsonify({'error': 'Category not found'}), 404
+    
+    return jsonify(category)
+
 @app.route('/api/categories', methods=['POST'])
 def api_create_category():
     """创建新分类"""