updater now fetches app registry from auth /api/auth/internal/registry
and uses internal_host/internal_port for SSH status checks and deploys.
Removes hardcoded host map; platform infra (auth, portal, settings)
kept in INFRA_DEPLOY/INFRA_HEALTH constants.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
