/**
 * Server-side feature flag for the residential projects (Dự án) module.
 *
 * Kept in its own module (no `'use client'`) so that Server Components can
 * import it without Next.js treating it as a client boundary export. The
 * client-side hook lives in `@/lib/hooks/use-residential-projects-flag`.
 */
export function isResidentialProjectsEnabledServer(): boolean {
  const raw = process.env['NEXT_PUBLIC_FEATURE_RESIDENTIAL_PROJECTS'];
  if (raw == null || raw === '') return true;
  return !(raw === '0' || raw.toLowerCase() === 'false');
}