Cargo schema not found

From the readme, running ``cargo schema`` is expected to generate JSON schema files but returns an error. Could it be the command has changed or am missing something.


Start with the README instructions for `cargo schema`, then run the command to confirm the reported error and compare the documented command with the current project setup. Done means identifying whether the command or its prerequisites are outdated and updating the relevant guidance so JSON schema generation works as described.

Written by the indexing model from the issue text.