为讲解业务单元接入预览封面

src/data/adapters/guideDataAdapter.ts

@@ -15,6 +15,9 @@ import {
 import {
   normalizeSameOriginPublicUrl
 } from '@/utils/publicUrl'
+import {
+  getExplainUnitPreviewImage
+} from '@/utils/explainUnitPreviews'
 import type {
   GuideStaticContentPayload,
   GuideStaticDataset,
@@ -298,6 +301,7 @@ const toExplainBusinessUnitsByHallId = (
         id: unitId,
         name: unitNameByKey.get(`${hallId}:${unitId}`) || '其他讲解',
         hallId,
+        previewImageUrl: getExplainUnitPreviewImage(unitId),
         guideStopCount: groupStops.length,
         stops: groupStops
       }))