Windows CLI MCP Server

# wsl/validateWslWorkingDirectory - **accepts valid WSL directories from global or shell-specific lists** – directories under resolved allowed paths are permitted. - **rejects directories outside the allowed set or with invalid format** – errors are thrown for disallowed roots, relative paths or Windows-style paths. - **supports custom mount points and ignores unsupported global UNC paths** – validation uses the configured mount prefix and logs warnings for skipped UNC paths.