chore(guards): map all 85 architecture tests to guards, add 4 new guards
Add GR-CORE-LAYERS (layer isolation), GR-CORE-MODULE (module boundaries),
GR-CORE-META (agent/codex system integrity), GR-UI-TAXONOMY (status
taxonomy consistency). Extend existing guards GR-SEC-008, GR-UI-DETAIL,
GR-UI-LIST, GR-UI-A11Y, GR-UI-REUSE, GR-TEST-002, GR-SEC-002 with
their previously unmapped architecture tests. Coverage goes from 23/85
mapped tests (27%) to 85/85 (100%).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>