Function readOverlay

scripts/resolvers/model-overlay.ts:27–44

(model: string, seen: Set<string> = new Set())

const INHERIT_RE = /^\s*\{\{INHERIT:([a-z0-9-]+(?:\.[0-9]+)*)\}\}\s*\n/;

export function readOverlay(model: string, seen: Set<string> = new Set()): string {
  if (seen.has(model)) return ''; // cycle guard
  seen.add(model);

  const filePath = path.join(OVERLAY_DIR, `${model}.md`);
  if (!fs.existsSync(filePath)) return '';

  const raw = fs.readFileSync(filePath, 'utf-8');
  const match = raw.match(INHERIT_RE);
  if (!match) return raw.trim();

  const baseModel = match[1];
  const base = readOverlay(baseModel, seen);
  const rest = raw.replace(INHERIT_RE, '').trim();

  if (!base) return rest;
  return `${base}\n\n${rest}`;
}

export function generateModelOverlay(ctx: TemplateContext): string {
  if (!ctx.model) return '';