// ── nav-signal.js — per-route AbortController ────────────
// Lives in its own module so api.js and router.js can both import
// without creating a circular dependency via the page modules.

let current = null;

export function resetNavController() {
  if (current) current.abort();
  current = new AbortController();
}

export function getNavSignal() {
  return current ? current.signal : undefined;
}