It would be very helpful to use unix domain sockets (supported in Java 17) for localhost MCP Client <-> MCP Server communication.

Currently, stdio transport is used for testing, debugging, and deployment of MCP servers.

Unix domain sockets (UDS) would provide a localhost-only alternative to stdio.

I've provided an implementation in pr #439, along with test code. I'm open to refactoring, for naming consistency additional extensibility, etc.