Round 13 of windows-free-tests fixes. Round 12 (scope pivot) revealed all
8 gstack-paths tests fail on Windows because the test invokes the bash
shebang script directly:
spawnSync(BIN, []) # BIN = path.join(ROOT, 'bin', 'gstack-paths')
Windows CreateProcess can't parse `#!/usr/bin/env bash` from the file.
The script never runs on Windows via this invocation path.
Fix: change to `spawnSync('bash', [BIN], ...)`. This matches production
usage — the script is sourced from inside skill bash blocks via
`eval "$(~/.claude/skills/gstack/bin/gstack-paths)"`, where bash is
always the executor. Mac/Linux behavior is identical (bash invocation
of a bash script).
Verified locally: 8/8 tests still pass on macOS.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
New bin/gstack-paths emits GSTACK_STATE_ROOT, PLAN_ROOT, TMP_ROOT exports for
skill bash blocks to source via eval. Honors GSTACK_HOME → CLAUDE_PLUGIN_DATA →
$HOME/.gstack → .gstack (and parallel chains for plan/tmp roots) so skills work
the same in plugin installs, global installs, and CI containers without HOME.
Eight skills migrate off inline ${CLAUDE_PLUGIN_DATA:-...} or ${GSTACK_HOME:-...}
chains: careful, freeze, guard, unfreeze, investigate, context-save,
context-restore, learn, office-hours, plan-tune, codex. Resolved values are
identical, so existing tests cover correctness; the win is consolidating 11
copy-pasted fallback chains behind one helper.
codex/SKILL.md.tmpl gets a new Step 0.6 Resolve portable roots that sources
gstack-paths once, then replaces hardcoded ~/.claude/plans/*.md and
/tmp/codex-*-XXXXXX.txt with "$PLAN_ROOT"/*.md and "$TMP_ROOT/codex-*-XXXXXX.txt".
Hardening direction credited to the McGluut/gstack fork; this is upstream's
factoring of the per-skill chain the fork inlined.
Tests: test/gstack-paths.test.ts covers all three fallback chains with 8 unit
tests (HOME unset, CLAUDE_PLUGIN_DATA set, GSTACK_HOME wins, etc).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan