Initial commit: FA 2.0 Design System foundation

Token pipeline (Style Dictionary v4, DTCG format):
- Primitive tokens: colour palettes (brand, sage, neutral, feedback),
  typography (3 font families, 21-variant type scale), spacing (4px grid),
  border radius, shadows, opacity
- Semantic tokens: text, surface, border, interactive, feedback colours;
  typography roles; layout spacing
- Component tokens: Button (4 sizes), Input (2 sizes)
- Generated outputs: CSS custom properties, JS ES6 module, flat JSON

Atoms (3 components):
- Button: contained/soft/outlined/text × primary/secondary, 4 sizes,
  loading state, underline for text variant
- Typography: 21 variants across display/heading/body/label/caption/overline,
  maxLines truncation
- Input: external label, helper text, error/success validation,
  start/end icons, required indicator, 2 sizes, multiline support

Infrastructure:
- MUI v5 theme with full token mapping
- Storybook 8 with autodocs
- Claude Code agents and skills for token/component workflows
- Design system documentation and cross-session memory

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

.claude/skills/status/SKILL.md

@@ -0,0 +1,35 @@
+---
+name: status
+description: Report current status of tokens, components, and build health
+---
+
+Report the current status of the FA Design System.
+
+**Instructions:**
+1. Read `docs/memory/session-log.md` — summarise recent work
+2. Read `docs/memory/component-registry.md` — count components by status (planned, in-progress, review, done)
+3. Read `docs/memory/token-registry.md` — summarise token coverage
+4. Read `docs/memory/decisions-log.md` — count decisions logged
+5. Check if Storybook is running (curl http://localhost:6006)
+6. Check if tokens build successfully (`npm run build:tokens`)
+
+**Report format:**
+```
+## FA Design System Status
+
+### Tokens
+- Primitives: [count] defined
+- Semantic: [count] defined
+- Component: [count] defined
+
+### Components
+- Done: [list]
+- In progress: [list]
+- Planned: [list]
+
+### Recent activity
+- [last session summary]
+
+### Next steps
+- [recommended next actions]
+```