Changes:
- Import Rich Console in windows.py
- Create _debug_console with stderr=True
- Replace all sys.stderr.write() calls with _debug_console.print()
- Add color coding: yellow for headers, dim for details, red for errors
- Increase output length from 200 to 300 chars for better diagnostics

This should finally make debug output visible in PowerShell by using
the same Rich console system that cli.py uses, bypassing any stderr
capture issues.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>