fix: last and next checking

packages/website/src/stores/guessEphemeral.ts

@@ -1,19 +1,22 @@
 import type { TankDefinition } from "@blitzkit/core";
 import { Varuna } from "varuna";
 
+export enum GuessState {
+  Correct,
+  Incorrect,
+  NotGuessed,
+}
+
 export interface Guess {
   tank: TankDefinition;
-  /**
-   * true = correct, false = incorrect, null = not guessed
-   */
-  guessState: boolean | null;
+  guessState: GuessState;
   totalGuesses: number;
   correctGuesses: number;
 }
 
 export const Guess = new Varuna<Guess, TankDefinition>((tank) => ({
   tank,
-  guessState: null,
+  guessState: GuessState.NotGuessed,
   totalGuesses: 0,
   correctGuesses: 0,
 }));