Upstream Claude Code bug (anthropics/claude-code#24529) leaves
CLAUDE_PLUGIN_ROOT unset for Stop hooks on macOS and ALL hooks
on Linux. Two-layer defense:
1. Shell-level: hooks.json commands now use inline fallback
_R="${CLAUDE_PLUGIN_ROOT}"; [ -z "$_R" ] && _R="$HOME/...";
falling back to the known marketplace install path.
2. Script-level: bun-runner.js self-resolves plugin root from
its own filesystem location via import.meta.url, and fixes
broken /scripts/... paths that result from empty expansion.
Added test to verify all hook commands include the fallback path.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Alex Newman
04e320b190