- Add server validation to prevent P2 from taking multiple actions on the same offer
- Hide P2 action buttons after an action is taken (using \!state.p2Action condition)
- Add offer details display to G3, G4, and G5 (was missing)
- Fix G2 to show offer details instead of just 'Oferta activa'
- Reset game status to PLAYING when changing variant from FINISHED state
- Ensure P2 can only make one decision per offer in all variants