Reversion Toolbar
Install a floating pill-shaped toolbar (Agentation-inspired: dark #1a1a1a, 44px tall, rounded 22px, layered shadow) that lets viewers switch between registered reversions in a running React app. A "reversion" is a component slot with multiple alternative versions that can be switched at runtime.
Key behaviors:
- Open by default, but the user can close to a 44px circle. Open/closed state persists.
- Viewport-aware: only reversions whose component is current
[Description truncada. Veja o README completo no GitHub.]