filesystem MCP server still doesn't support legal Windows pathnames in claude_desktop_config.json

[NemanSyed]

Please see the closed https://github.com/modelcontextprotocol/servers/issues/447 for the full story. I can't reopen the issue. It was supposed to be resolved in https://github.com/modelcontextprotocol/servers/pull/543 but it's still failing in Claude Desktop 1.0.0332 (b563c9). It appears to be worse as it no longer supports the /Users/whatever style pathnames, only the "C:\\Users\\whatever" ones.