- Packer uses NAT during build; setup-vm.sh does post-import bridged config - Bake GHC 9.8.4 (primary) + 9.6.6 (LTS coverage); drop Stack + HLS - state-hub always via forward tunnel port 18000 (CoulombCore pattern) - autossh opens -R (reverse SSH) + -L 18000 (state-hub forward) together - Decisions section replaces Open Questions; all four resolved 2026-04-20 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>