Render images properly

[simonw]

Here's what I got after pasting an image into Claude Code:

My other timeline viewer does a better job of this: https://tools.simonwillison.net/claude-code-timeline?url=https%3A%2F%2Fgist.githubusercontent.com%2Fsimonw%2F9f45b72efaf42f32ef0c4fe39051e6fe%2Fraw%2F90de73bcd31c181f3cb51160303e8e62176830a2%2F7006d064-2f17-4e75-b8fe-10f572e9710b.jsonl#tz=local&q=&type=all&ct=all&role=all&hide=0&truncate=1&sel=74

[simonw]

OK this works: https://gistpreview.github.io/?95c8fedc49e3a34e83559c1ed352287d/page-001.html#msg-2025-12-27T05-52-14-798Z

Confusingly because I fed it a screenshot of the UI showing a base64 image it doesn't LOOK like it worked, but that's an image so it did!