PR #92 wired the ISO to the shared clawdie-npm-profile.sh but hardcoded
${SCRIPT_DIR}/../colibri and had no existence guard. Every other colibri
consumer in build.sh resolves through resolve_colibri_paths (default
/home/clawdie/ai/colibri, honoring COLIBRI_REPO), so the hardcoded path
diverged from the real build-host layout and ignored the override; a
missing file let cat fail silently into a half-written snippet.
Now: resolve via resolve_colibri_paths and preflight the file with a
clear error pointing at COLIBRI_REPO, matching preflight_colibri_artifacts.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>