saveForm function infrastructure exported ✓ 100.0%

export async function saveForm(form: SavedForm): Promise<void> {
  await updateStorageAtomically(
    STORAGE_KEYS.SAVED_FORMS,
    [] as SavedForm[],
    (forms) => {
      const next = [...forms];
      const existingIndex = next.findIndex((f) => f.id === form.id);

      if (existingIndex >= 0) {
        next[existingIndex] = { ...form, updatedAt: Date.now() };
      } else {
        next.push({ ...form, createdAt: Date.now(), updatedAt: Date.now() });
      }

      return next;
    },
  );
}