- §2: list colibri-mcp instead of colibri-test-agent (matches preflight at
build.sh:335 — test-agent is optional, gated by COLIBRI_STAGE_TEST_AGENT)
- §3: name the specific binaries preflight checks
- Notes: add Node.js (npm) to host toolchain requirements — build_and_stage_docs
needs node+npm, and the handoff should match REQUIREMENTS.md