// Molt readiness — how Puck's learning actually accumulates. The daemon counts
// the rated traces collected so far against the threshold for the next adapter
// "molt". Night Bloom shows this so sleep reflects real progress, not theatre.
// Null when the daemon is down (Space/demo mode) — the screen just omits the gauge.

export interface MoltStatus {
  /** rated traces accumulated server-side (server/data/traces.jsonl) */
  traces: number;
  /** traces needed before a molt (LoRA retrain from base) is eligible */
  threshold: number;
  /** hand-built SFT examples the molt starts from */
  sftBase: number;
  ready: boolean;
}

export async function fetchMoltStatus(): Promise<MoltStatus | null> {
  try {
    const res = await fetch("/api/molt/status", { signal: AbortSignal.timeout(4000) });
    if (!res.ok) return null;
    return (await res.json()) as MoltStatus;
  } catch {
    return null; // daemon offline — sleep still works, just without the gauge
  }
}