/**
 * Health Check 엔드포인트
 *
 * Manual Test:
 * 1. wrangler dev
 * 2. curl http://localhost:8787/health
 * 3. Expected: {"status":"ok","timestamp":"..."}
 */
export async function handleHealthCheck(): Promise<Response> {
  return Response.json({
    status: 'ok',
    timestamp: new Date().toISOString(),
  });
}