Add option to set a python version in install script for Claude Desktop setup

[giordano-lucas]

I am running into issues on opening Claude Desktop related to a wrong python version after running uv run fastmcp install server.py because one of my dependencies requires a specific python version.

I managed to fix this by manually editing the claude config file claude_desktop_config.json but I was wandering if there was a way to do this setup directly whithin fastmcp.

Otherwise, would it be possible to update this line to:

["run", "--python", sys.version]