run-multihost-verify.sh's XT default now points at
\$BUILD_DIR/harness/xce_test and fails fast (actionable "run
/xce-build harness" message) if missing. xce_test is the sole
mechanism (xtest()) by which the script's job-scenario functions
talk to the cluster, so a hard failure is correct, matching task
3.2's already-approved precedent.
SKILL.md's Prerequisites, env-var docs, and Dependencies sections
updated to match.
Verified live: sourced the script (main() guarded from running),
called precondition_checks() with the binary present and then moved
aside, confirmed the exact failure message, restored the binary
(checksum-verified intact).
Task 3.4 of xce-harness-component.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RLSNJhNoULvVcUhXEFafQC
Rongsong Shen
0626234792