feat(web): 积分商品图片选择器 — 媒体库 + 上传替代手动 URL

- PointsProductList: 图片字段改为 Input + 媒体库按钮 + 上传按钮 + 图片预览
- DrawerForm: 新增可选 form prop，允许外部控制表单实例

apps/web/src/components/DrawerForm.tsx

@@ -19,6 +19,7 @@ interface DrawerFormProps {
   sections?: FormSection[];
   children?: React.ReactNode;
   columns?: 1 | 2;
+  form?: ReturnType<typeof Form.useForm>[0];
 }
 
 export function DrawerForm({
@@ -32,8 +33,10 @@ export function DrawerForm({
   sections,
   children,
   columns = 2,
+  form: externalForm,
 }: DrawerFormProps) {
-  const [form] = Form.useForm();
+  const [internalForm] = Form.useForm();
+  const form = externalForm ?? internalForm;
   const isDark = useThemeMode();
 
   React.useEffect(() => {

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

@@ -11,12 +11,15 @@ import {
   Tag,
   Badge,
   Switch,
+  Upload,
   message,
 } from 'antd';
 import {
   PlusOutlined,
   EditOutlined,
   DeleteOutlined,
+  PictureOutlined,
+  UploadOutlined,
 } from '@ant-design/icons';
 import {
   pointsApi,
@@ -26,8 +29,11 @@ import {
 import { AuthButton } from '../../components/AuthButton';
 import { DrawerForm } from '../../components/DrawerForm';
 import type { FormSection } from '../../components/DrawerForm';
+import MediaPicker from '../../components/MediaPicker';
 import { PageContainer } from '../../components/PageContainer';
+import { uploadFile } from '../../api/upload';
 import { usePaginatedData } from '../../hooks/usePaginatedData';
+import { useThemeMode } from '../../hooks/useThemeMode';
 import { formatDateTime } from '../../utils/format';
 
 /** 商品类型映射 */
@@ -59,6 +65,9 @@ interface ProductFilters {
 export default function PointsProductList() {
   const [modalOpen, setModalOpen] = useState(false);
   const [editing, setEditing] = useState<PointsProduct | null>(null);
+  const [mediaPickerOpen, setMediaPickerOpen] = useState(false);
+  const [form] = Form.useForm();
+  const isDark = useThemeMode();
 
   const fetchProducts = useCallback(
     async (page: number, pageSize: number, filters: ProductFilters) => {
@@ -309,8 +318,53 @@ export default function PointsProductList() {
       title: '展示设置',
       fields: (
         <>
-          <Form.Item name="image_url" label="图片链接">
-            <Input placeholder="商品图片 URL" />
+          <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;
+              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>
+              );
+            }}
           </Form.Item>
           <Form.Item name="sort_order" label="排序">
             <InputNumber min={0} max={9999} style={{ width: '100%' }} placeholder="0" />
@@ -402,6 +456,16 @@ export default function PointsProductList() {
         width={600}
         columns={2}
         sections={formSections}
+        form={form}
+      />
+
+      <MediaPicker
+        open={mediaPickerOpen}
+        onClose={() => setMediaPickerOpen(false)}
+        onSelect={(url) => {
+          form.setFieldValue('image_url', url);
+          message.success('已选择图片');
+        }}
       />
     </PageContainer>
   );