feat: add skeleton CLI command and fix windows path parsing

[fd44fdg]

What's new?

• New CLI Command: \skeleton\ / \ ree. This allows viewing the structural tree (headers, functions, classes) directly in the terminal without starting an MCP server.
• Windows Support: Fixed root directory resolution and path splitting logic to work correctly on Windows.
• Robust Tree Building: Refactored the tree building logic to be more efficient and resilient to missing parent nodes.

This improvement makes \contextplus\ much more accessible for quick codebase inspection by both humans and AI agents.

[vercel]

@fd44fdg is attempting to deploy a commit to the ForLoopCodes' projects Team on Vercel.

A member of the Team first needs to authorize it.