feat: implement variable token offers and auto-round advancement

- Add variable offer system where P1 can offer any amount of tokens
- Players start with 10 tokens each (P1: pavos, P2: elotes)
- Implement offer/request mechanism with token validation
- Auto-advance rounds after P2 actions or P1 no-offer
- G2: Force offer by default, disable no-offer button when forced
- G3: Wait for shame decision after snatch before advancing
- G4: Implement inverse sanction (P1 gets requested without giving offered)
- Reset rounds to 1 when changing game variants
- Fix OfferControls responsiveness issues
- Hide offer controls after active offer
- Update all G1-G5 components with proper offer flow

g2-counterproductive-rule.mmd

@@ -1,9 +1,9 @@
 flowchart TD
-  A2[P2: Forzar?] -->|Sí| F2[P1: Oferta forzada]
-  A2 -->|No| B2[P1: Ofrecer 5?]
+  A2[P2: Forzar?] -->|Sí| F2[P1: Debe proponer oferta]
+  A2 -->|No| B2[P1: Proponer oferta?]
   F2 --> C2[P2: Acción final]
-  B2 -->|No ofrecer| O1[10,10]
+  B2 -->|No ofrecer| O1[Sin cambios]
   B2 -->|Ofrecer| C2[P2: Aceptar / Rechazar / Robar]
-  C2 -->|Aceptar| O2[15,15]
-  C2 -->|Rechazar| O3[10,10]
-  C2 -->|Robar| O4[5,20]
+  C2 -->|Aceptar| O2[Intercambiar según oferta/pedido]
+  C2 -->|Rechazar| O3[Sin cambios]
+  C2 -->|Robar| O4[Transferir solo lo ofrecido a P2]