Реализован интерфейс согласий

figma/src/app/data/session.ts

@@ -0,0 +1,20 @@
+export type AuthStatus = 'authenticated' | 'guest' | null;
+
+const KEY = 'han_auth_status';
+
+export function getAuthStatus(): AuthStatus {
+  return (localStorage.getItem(KEY) as AuthStatus) ?? null;
+}
+
+export function setAuthStatus(status: AuthStatus) {
+  if (status === null) localStorage.removeItem(KEY);
+  else localStorage.setItem(KEY, status);
+}
+
+export function isGuest() {
+  return getAuthStatus() === 'guest';
+}
+
+export function isAuthenticated() {
+  return getAuthStatus() === 'authenticated';
+}