Installer should check python environment

[GrumpyKitten81]

example for poetry:

when installed with: poetry run code-review-graph install --platform claude-code

the .mcp config is invalid, because a global python installation is assumed

solution .mcp.json

{
"mcpServers": {
"code-review-graph": {
"command": "poetry",
"args": [
"run",
"code-review-graph",
"serve"
],
"type": "stdio"
}
}
}