Add bot to play against.

internal/game/battle.go

@@ -874,10 +874,10 @@ func (g *Game) resolveBattle() {
 	// Tagged "result" so the client can hold it back until the replay finishes
 	// (the outcome is known now, but showing it early would spoil the battle).
 	if winner < 0 {
-		g.addLog(LogEntry{Seat: -1, Icon: "⚔️", Kind: "result",
+		g.addLog(LogEntry{Seat: -1, Icon: "⚔️", Kind: LogResult,
 			Text: fmt.Sprintf("Round %d battle ends in a draw.", g.Round)})
 	} else {
-		g.addLog(LogEntry{Seat: winner, Icon: "⚔️", Kind: "result",
+		g.addLog(LogEntry{Seat: winner, Icon: "⚔️", Kind: LogResult,
 			Text: fmt.Sprintf("%s wins the round %d battle (+%d🏆).", pname(winner), g.Round, res.Trophies)})
 	}
 	for _, p := range g.Players {