The ~/.claude/skills/expertise/ system was personal tooling that doesn't exist for other users. Removed from: - create-roadmap workflow (detect_domain step) - plan-phase workflow (domain loading) - roadmap template (Domain Expertise section) - phase-prompt template (domain frontmatter) - plan-format reference (domain field) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>