Replace the hardcoded immense-voyage.local with $START9_BOX_HOST so the
real host lives only in local start-cli context, not the repo. Add a
Current state section for fast session orientation.
Add a concise day-one AGENTS.md (stack, exact build/run/test/deploy
commands, directory layout, conventions, Always/Never). Preserve the
existing CLAUDE.md project constitution as docs/ten31-constitution.md
(referenced from AGENTS.md) and point CLAUDE.md -> AGENTS.md so Claude
Code loads the canonical guide.