- Add examples/sign.html with comprehensive extension compatibility testing
- Update README.md with profile fetching API documentation
- Update .gitignore for better file management
- Update examples/button.html and examples/modal.html with latest features
This completes the single-extension architecture implementation with:
- nos2x compatibility through true single-extension mode
- Method switching between extension/local/NIP-46/readonly
- Enhanced profile fetching for floating tab
- Comprehensive debugging and testing capabilities
