Reduce hype/marketing claims vs reality and add benchmarks

[sfloess]

Hype vs. Reality

The README and docs heavily market this as 'production-ready', 'first modern Java 21 curses', 'complete AWT widget set', etc. However:

• 0 stars/forks despite claims.
• Many advanced features (true color, Unicode full support, Windows, RTL) are still on roadmap.
• Heavy exclusions in coverage reports for demos/FFI layers.

Recommendations:

1. Tone down absolute claims.
2. Add side-by-side comparisons and performance benchmarks vs Lanterna, etc.
3. Clear 'alpha/beta' status if applicable.

This will help set realistic expectations for potential users.