The pre-release line-walk (#96601 salvage) moved the download/probe body
into install_node_line() and rejects an unstartable binary BEFORE
adoption via node_satisfies_build on the extracted tree. The sandboxed
driver now inlines all three functions, and the broken-node test pins
the stronger pre-adoption rejection instead of post-adoption cleanup.
AI-review follow-up on #87467:
- On probe failure, remove the extracted ~/.hermes/node tree and the
node/npm/npx bin links so later installer steps and retry runs start
clean instead of resolving node to a binary that cannot start.
- The termux pkg branch had the same silent-success class: an empty
version probe logged success and set HAS_NODE=true. Degrade with the
binary's own error instead.
install_node's post-install probe was
installed_ver=$(node --version 2>/dev/null) under set -e: when the
downloaded Node exists but cannot start (Node 26 linux-x64 builds link
libatomic.so.1, missing on minimal Debian/Ubuntu), the assignment
aborted the whole installer at exit 127 with the loader's explanation
discarded — installs died mid-sentence with no output at all (#87460).
- Probe now captures stderr and degrades with log_error carrying the
loader message plus the libatomic1 hint instead of aborting.
- Debian/Ubuntu installs preinstall libatomic1 (best-effort, mirroring
the existing apt idiom) so the common case just works.
- Termux branch's same-shaped probe gets a || true guard.
Fixes#87460
Teknium