Fix nurse shark and remove mid-battle choice.

internal/ai/ai.go

@@ -35,13 +35,12 @@ import (
 
 // Action is one move the bot wants to make, mirroring the client protocol.
 type Action struct {
-	Type   string   // buy | buyAvocado | sell | trade | tradeChoose | pass | arrange | ready | revealChoose | battleChoose
+	Type   string   // buy | buyAvocado | sell | trade | tradeChoose | pass | arrange | ready | revealChoose
 	Row    int      // buy / buyAvocado
 	Cards  []string // sell / trade
 	Pick   int      // tradeChoose
 	Order  []string // arrange
 	CardID string   // revealChoose (Cockatoo): the pet to reveal
-	Value  int      // battleChoose (Nurse Shark): Trumpets to spend
 }
 
 // Bot is a computer player at a fixed difficulty level.
@@ -86,13 +85,6 @@ func (b *Bot) Act(v *game.View, mem *Memory) *Action {
 			return b.decideArrange(v, mem)
 		}
 	case game.PhaseBattle:
-		if v.PendingBattle != nil {
-			if v.PendingBattle.Seat == v.YouSeat {
-				// Spend as many Trumpets as allowed — more rocks is better.
-				return &Action{Type: "battleChoose", Value: v.PendingBattle.Max}
-			}
-			return nil
-		}
 		if !me.Ready {
 			return &Action{Type: "ready"}
 		}
@@ -134,11 +126,6 @@ func Pending(v *game.View) bool {
 	case game.PhaseArrange:
 		return !me.Ready
 	case game.PhaseBattle:
-		// A pending mid-battle decision is owed only by the deciding seat;
-		// otherwise everyone owes the battle acknowledgement.
-		if v.PendingBattle != nil {
-			return v.PendingBattle.Seat == v.YouSeat
-		}
 		return !me.Ready
 	}
 	return false

internal/ai/ai_test.go

@@ -100,8 +100,6 @@ func applyAction(g *game.Game, playerID string, a *Action) error {
 		return g.TradeChoose(playerID, a.Pick)
 	case "revealChoose":
 		return g.RevealChoose(playerID, a.CardID)
-	case "battleChoose":
-		return g.BattleChoose(playerID, a.Value)
 	case "pass":
 		return g.Pass(playerID)
 	case "arrange":