import { readFile } from 'node:fs/promises';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

const HERE = dirname(fileURLToPath(import.meta.url));
export const AGENTS_DIR = join(HERE, 'agents');

/** Load a Han agent persona — the markdown body after the YAML frontmatter. */
export async function loadPersona(agent: string): Promise<string> {
  const md = await readFile(join(AGENTS_DIR, `${agent}.md`), 'utf8');
  return md.replace(/^---\r?\n[\s\S]*?\r?\n---\r?\n/, '').trim();
}