PR #157 merged -> T-1022 done. Activate the D-239 three-carrier foundation batch via /whats-next: T-1023 (RegionProfile), T-1026 (domain warp), and T-1024 (district climate) with refinement notes. T-1024 blocked-by T-1023 (temperature fields live on the RegionProfile struct). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>