Add component lifecycle + retroactive review plan

- docs/reference/component-lifecycle.md: 10-stage quality gate sequence
  (build → stories → audit/critique/harden → fix → polish → present →
  iterate → normalize → preflight → commit)
- docs/reference/retroactive-review-plan.md: Plan to review 30+ existing
  components using condensed process (~3.5 sessions)
- Updated /build-atom, /build-molecule, /build-organism to include
  internal QA stages automatically
- CLAUDE.md: added lifecycle reference as critical rule #8

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/skills/build-molecule/SKILL.md

@@ -20,4 +20,11 @@ Use the component-builder agent to handle this task. The user wants to build the
 7. ALL visual values MUST come from the MUI theme — never hardcode
 8. Write comprehensive Storybook stories with realistic content
 9. Verify the component renders in Storybook
-10. Update all memory files when done
+10. **Run internal QA** (stages 3-5 from `docs/reference/component-lifecycle.md`):
+    - Run `/audit` — fix all P0/P1 issues
+    - Run `/critique` — fix all P0/P1 issues
+    - Run `/harden` — check edge cases for interactive molecules
+    - Run `/polish` — final alignment, spacing, transitions
+    - Run `/typeset` if text-heavy (cards, form fields)
+11. Present to user with summary and scores
+12. Update all memory files when done