The image command now accepts either a plain file path or a markdown
image reference like ![alt text](path). When a markdown reference is
detected (starts with ![ and ends with )) the alt text and path are
extracted. The image is copied with a generated filename and the alt
text is preserved in the output. Plain paths continue to derive alt
text from the generated filename.

https://claude.ai/code/session_01TKxtWqAnWzSwgPdY23Zgx6