feat(debug): persist and reset debug game state

src/utils/debug/debugGameStateCookie.ts

@@ -0,0 +1,39 @@
+import type { GameState } from "@/managers/stores/useGameStore";
+
+const DEBUG_GAME_STATE_COOKIE_NAME = "la-fabrik-debug-game-state";
+const DEBUG_GAME_STATE_COOKIE_MAX_AGE = 60 * 60 * 24 * 30;
+
+function getCookieValue(name: string): string | null {
+  if (typeof document === "undefined") return null;
+
+  const cookie = document.cookie
+    .split(";")
+    .map((item) => item.trim())
+    .find((item) => item.startsWith(`${name}=`));
+
+  return cookie ? cookie.slice(name.length + 1) : null;
+}
+
+export function readDebugGameStateCookie(): unknown {
+  const value = getCookieValue(DEBUG_GAME_STATE_COOKIE_NAME);
+  if (!value) return null;
+
+  try {
+    return JSON.parse(decodeURIComponent(value));
+  } catch {
+    return null;
+  }
+}
+
+export function writeDebugGameStateCookie(state: GameState): void {
+  if (typeof document === "undefined") return;
+
+  const value = encodeURIComponent(JSON.stringify(state));
+  document.cookie = `${DEBUG_GAME_STATE_COOKIE_NAME}=${value}; max-age=${DEBUG_GAME_STATE_COOKIE_MAX_AGE}; path=/; SameSite=Lax`;
+}
+
+export function clearDebugGameStateCookie(): void {
+  if (typeof document === "undefined") return;
+
+  document.cookie = `${DEBUG_GAME_STATE_COOKIE_NAME}=; max-age=0; path=/; SameSite=Lax`;
+}