fix(web): 积分商品图片选择器 + 更新 422 修复

- 图片字段改用 shouldUpdate 自定义渲染，值正确绑定到 Input 和预览
- updateProduct API 改为嵌套 { data, version } 格式，匹配后端 DTO
- 隐藏 Form.Item 保存 image_url 值到 form store

apps/web/src/api/health/points.ts

@@ -322,10 +322,11 @@ export const pointsApi = {
   },
 
   updateProduct: async (id: string, req: Partial<CreatePointsProductReq> & { is_active?: boolean; version: number }) => {
+    const { version, ...fields } = req;
     const { data } = await client.put<{
       success: boolean;
       data: PointsProduct;
-    }>(`/health/admin/points/products/${id}`, req);
+    }>(`/health/admin/points/products/${id}`, { data: fields, version });
     return data.data;
   },
 

apps/web/src/pages/health/PointsProductList.tsx

@@ -318,51 +318,57 @@ export default function PointsProductList() {
       title: '展示设置',
       fields: (
         <>
-          <Form.Item name="image_url" label="商品图片">
-            <Space.Compact style={{ width: '100%' }}>
-              <Input placeholder="输入 URL 或从媒体库选择" style={{ flex: 1 }} />
-              <Button icon={<PictureOutlined />} onClick={() => setMediaPickerOpen(true)}>
-                媒体库
-              </Button>
-              <Upload
-                accept="image/*"
-                showUploadList={false}
-                beforeUpload={async (file) => {
-                  try {
-                    const result = await uploadFile(file);
-                    form.setFieldValue('image_url', result.url);
-                    message.success('图片上传成功');
-                  } catch {
-                    message.error('图片上传失败');
-                  }
-                  return false;
-                }}
-              >
-                <Button icon={<UploadOutlined />}>上传</Button>
-              </Upload>
-            </Space.Compact>
-          </Form.Item>
-          <Form.Item noStyle shouldUpdate={(prev, cur) => prev.image_url !== cur.image_url}>
-            {({ getFieldValue }) => {
-              const url: string | undefined = getFieldValue('image_url');
-              if (!url) return null;
+          <Form.Item name="image_url" hidden><Input /></Form.Item>
+          <Form.Item label="商品图片" shouldUpdate={(prev, cur) => prev.image_url !== cur.image_url}>
+            {({ getFieldValue, setFieldValue }) => {
+              const imageUrl: string | undefined = getFieldValue('image_url');
               return (
-                <div
-                  style={{
-                    marginTop: -20,
-                    marginBottom: 16,
-                    borderRadius: 8,
-                    overflow: 'hidden',
-                    border: `1px solid ${isDark ? '#1e293b' : '#e2e8f0'}`,
-                  }}
-                >
-                  <img
-                    src={url}
-                    alt="商品图片预览"
-                    style={{ width: '100%', height: 120, objectFit: 'cover' }}
-                    onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
-                  />
-                </div>
+                <>
+                  <Space.Compact style={{ width: '100%' }}>
+                    <Input
+                      value={imageUrl || ''}
+                      onChange={(e) => setFieldValue('image_url', e.target.value || undefined)}
+                      placeholder="输入 URL 或从媒体库选择"
+                      style={{ flex: 1 }}
+                    />
+                    <Button icon={<PictureOutlined />} onClick={() => setMediaPickerOpen(true)}>
+                      媒体库
+                    </Button>
+                    <Upload
+                      accept="image/*"
+                      showUploadList={false}
+                      beforeUpload={async (file) => {
+                        try {
+                          const result = await uploadFile(file);
+                          setFieldValue('image_url', result.url);
+                          message.success('图片上传成功');
+                        } catch {
+                          message.error('图片上传失败');
+                        }
+                        return false;
+                      }}
+                    >
+                      <Button icon={<UploadOutlined />}>上传</Button>
+                    </Upload>
+                  </Space.Compact>
+                  {imageUrl && (
+                    <div
+                      style={{
+                        marginTop: 8,
+                        borderRadius: 8,
+                        overflow: 'hidden',
+                        border: `1px solid ${isDark ? '#1e293b' : '#e2e8f0'}`,
+                      }}
+                    >
+                      <img
+                        src={imageUrl}
+                        alt="商品图片预览"
+                        style={{ width: '100%', height: 120, objectFit: 'cover' }}
+                        onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
+                      />
+                    </div>
+                  )}
+                </>
               );
             }}
           </Form.Item>