fix: 迁移码返回完整URL；确认须在目标店；兼容扫码接收

Co-authored-by: Cursor <cursoragent@cursor.com>

jituan/services/club_migrate_qr.py

@@ -74,16 +74,17 @@ def generate_migrate_qrcode(*, to_club_id: str, token: str) -> Tuple[str, str]:
     oss_path = f"club_migrate/{club_id}/{filename}"
     file_obj = io.BytesIO(wx_resp.content)
     try:
-        full_url = upload_to_oss(file_obj, oss_path)
+        full_url = upload_to_oss(file_obj, oss_path, content_type='image/png')
     except Exception as e:
         logger.exception('migrate qr upload fail: %s', e)
         return '', f'上传小程序码失败: {e}'
     if not full_url:
         return '', '上传小程序码失败'
 
+    # 前端保存相册必须用 https 完整链；相对路径在 oss 未就绪时会保存失败
+    if str(full_url).startswith('http'):
+        return str(full_url), ''
     cos_domain = getattr(settings, 'COS_DOMAIN', '').rstrip('/')
-    if cos_domain and full_url.startswith(cos_domain):
-        relative_path = full_url.replace(f'{cos_domain}/', '', 1)
-    else:
-        relative_path = oss_path
-    return relative_path, ''
+    if cos_domain:
+        return f'{cos_domain}/{str(full_url).lstrip("/")}', ''
+    return str(full_url), ''