Feature request: Add --host flag (and HOST env var) to configure bind address for streamable-http

[garabit]

uvx mcp-run-python --port <port> streamable-http only accepts --port and binds to 127.0.0.1 by default. There is no way to choose the bind address, which prevents LAN/container access without external proxies.

Request: add a --host CLI option and honor a HOST env var (default stays 127.0.0.1). This would make it possible to start mcp-run-python as follows:

uvx mcp-run-python --port 9000 --host 0.0.0.0 streamable-http
# or
HOST=0.0.0.0 uvx mcp-run-python --port 9000 streamable-http

[DouweM]

@garabit Makes sense, would you be up for submitting a PR to add this?

[sandsc]

Please check my pull request, #27