fix permissions and teacher attendance workflows

apps/admin/src/auth/permission-store.ts

@@ -0,0 +1,15 @@
+export const PERMISSIONS_UPDATED_EVENT = 'permissions-updated';
+
+export function readPermissions(): string[] {
+  try {
+    const value = JSON.parse(localStorage.getItem('permissions') || '[]');
+    return Array.isArray(value) ? value.filter((item): item is string => typeof item === 'string') : [];
+  } catch {
+    return [];
+  }
+}
+
+export function writePermissions(permissions: string[]): void {
+  localStorage.setItem('permissions', JSON.stringify([...new Set(permissions)]));
+  window.dispatchEvent(new Event(PERMISSIONS_UPDATED_EVENT));
+}