Three reinforcing changes so the next agent's mother setup lands instead
of failing late:
- setup-mother.sh: fail-fast preflight for python3 (geodesic-dome-mcp is a
python3 script that otherwise installs fine and fails only when invoked).
- MOTHER-SETUP.md: new Prerequisites section — python3 on PATH, and the
COLIBRI_AUTOSPAWN_RPC_PROMPT boot decision (set = auto-spawn agent on
boot; unset = quiet token-free boot).
- FREEBSD-BUILD-LANE-HANDOFF.md: pointer to MOTHER-SETUP.md/setup-mother.sh
so the mother docs are discoverable from the build-lane entry point.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
