// Pure ordering logic (kept DOM-free so it is unit-testable). The card MODULES
// themselves are imported by sacred_valley.js, which passes their defs here.
export function orderCards(defs, layout = { card_order: [], hidden: [] }) {
  const byId = new Map(defs.map(d => [d.id, d]));
  const hidden = new Set(layout.hidden || []);
  const out = [];
  for (const id of layout.card_order || []) {
    if (byId.has(id) && !hidden.has(id)) { out.push(byId.get(id)); byId.delete(id); }
  }
  for (const d of defs) {
    if (byId.has(d.id) && !hidden.has(d.id)) out.push(d);
  }
  return out;
}