Skill: Governance

Keep the system consistent as it grows. Apply versioning, contribution, and deprecation rules.

Steps

1. Read workflows/governance.md (SemVer table, contribution workflow, deprecation policy, change comms).
2. Classify the change: major (breaking — renamed/removed token or prop, changed anatomy/default), minor (additive — new token/component/variant/optional prop), patch (fix — contrast/bug/doc/value tweak in tolerance).
3. For a new component/token: confirm it serves a real, repeated need (≥ 2 places) before promoting product → candidate → core. Design it to the full quality bar (.claude/rules/components.md → Component Quality Bar).
4. For a deprecation: mark with reason + replacement + removal version; keep working ≥ 1 minor cycle; provide a migration map (design-systems/crosswalk.md style); remove only in a major.
5. Wire any new file into CLAUDE.md (File Reference Map + relevant table/router) and add a changelog entry.

Verification (definition of done)

• Change has a SemVer level and a changelog entry.
• Removals have a deprecation window, a replacement, and a migration table.
• New spec meets the 8-state + a11y + token-mapping bar and is reachable via the router.
• python3 scripts/validate_tokens.py passes; contrast re-checked if colors changed.