Describe the feature or problem you’d like to solve

you can define the github MCP like this:

{"mcpServers": {"github-mcp": {"command":"npx","args": ["-y","@modelcontextprotocol/server-github"            ],"env": {"GITHUB_PERSONAL_ACCESS_TOKEN":"<MySecretTokenHere>"            }        }    }}

a recent cursor update has added the possibility to define an mcp.json scoped to a project, which is great.
However, I want to commit this mcp file to the project’s repo … but I don’t want to commit my secret token.

Proposed solution

Could we add the option to actually refer to an env variable here?
Alternatively, if I could at least enter a file path there like "GITHUB_TOKEN_PATH": "~./.github_token", that would work too