feat: 智能添加根据类别参数字段配置解析 - 支持子类别额外字段

data/items_71fa2b4d818f.json

@@ -49,5 +49,54 @@
     "is_pinned": false,
     "subcategory_id": "90ce312b560d",
     "updated_at": "2026-04-28 12:32:50"
+  },
+  {
+    "name": "EOS R7",
+    "brand": "佳能 (Canon)",
+    "year": 2022,
+    "specs": {
+      "品牌": "佳能 (Canon)",
+      "商品编号": "10090975539899",
+      "店铺": "佳能 (Canon) 数码旗舰店",
+      "外接电源": "支持外接电源",
+      "电池类型": "锂离子电池",
+      "接口": "Wi-Fi 蓝牙 HDMI",
+      "高清摄像": "4K超高清视频",
+      "焦点数量": "5915个",
+      "型号": "EOS R7",
+      "有效像素": "3250万",
+      "传感器类型": "CMOS",
+      "上市时间": "2022-06",
+      "取景器类型": "电子取景器",
+      "液晶屏像素": "162万",
+      "液晶屏尺寸": "3.2英寸",
+      "液晶屏类型": "侧翻屏 旋转屏",
+      "最大光圈": "F3.5",
+      "标准ISO感光度": "ISO 100-32000",
+      "连拍速度": "电子最高约30张/秒，机械最高约15张/秒",
+      "存储介质": "SD卡 SDHC卡 SDXC卡",
+      "功能": "Wi-Fi 4K视频 5轴防抖 高速连拍 翻转自拍",
+      "滤镜直径": "55mm",
+      "视频拍摄能力": "4K 60P",
+      "传感器尺寸": "APS-C",
+      "视频采样": "4:2:2",
+      "像素": "3000-4000万",
+      "镜头卡口": "佳能RF卡口",
+      "RAW照片输出": "14bit",
+      "适用对象": "入门级",
+      "类型": "机身"
+    },
+    "description": "入门级机身",
+    "id": "c8c3f124b2ce",
+    "category_id": "71fa2b4d818f",
+    "created_at": "2026-04-28 16:38:03",
+    "visible": true,
+    "raw_text": "",
+    "images": [
+      "/static/uploads/9703a1d16424_1777365365.png"
+    ],
+    "publish_date": "",
+    "views": 0,
+    "is_pinned": false
   }
 ]