Copilot CLI mcp wizard trims last character and slashes

[elefthei]

Describe the bug

When using the /mcp add wizard it trims the last character in the MCP name, in the HTTP server URL and messes up the slashes (on 0.0.402 on windows).

Affected version

0.0.402

Steps to reproduce the behavior

1. Use \mcp add
2. Add a tool, see gif attached
3. See ~/.copilot/mcp-config.json to confirm bug.

Expected behavior

Only trim trailing whitespace, escape forward slashes / and whitespace on windows.