- Convert gstack-upgrade to SKILL.md.tmpl template system
- All 10 skills now use templates (consistent auto-generated headers)
- Add comprehensive template validation tests (22 tests):
every skill has .tmpl, generated SKILL.md has header, valid frontmatter,
--dry-run reports FRESH, no unresolved placeholders
- Add E2E tests for /plan-ceo-review, /plan-eng-review, /retro
- Mark /ship, /setup-browser-cookies, /gstack-upgrade as test.todo (destructive/interactive)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Garry Tan