docs(01): add research and validation strategy

.planning/phases/01-design-token-foundation/01-VALIDATION.md

@@ -0,0 +1,80 @@
+---
+phase: 1
+slug: design-token-foundation
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-03-11
+---
+
+# Phase 1 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | vitest (not yet installed — Wave 0 installs) |
+| **Config file** | `frontend/vite.config.ts` (extend with `test` block) or `frontend/vitest.config.ts` |
+| **Quick run command** | `cd frontend && bun vitest run --reporter=verbose` |
+| **Full suite command** | `cd frontend && bun vitest run` |
+| **Estimated runtime** | ~5 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `cd frontend && bun vitest run src/lib/palette.test.ts src/components/InlineEditCell.test.tsx`
+- **After every plan wave:** Run `cd frontend && bun vitest run`
+- **Before `/gsd:verify-work`:** Full suite must be green
+- **Max feedback latency:** 10 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 01-01-01 | 01 | 0 | DSGN-02 | unit | `bun vitest run src/lib/palette.test.ts -t "exports all categories"` | ❌ W0 | ⬜ pending |
+| 01-01-02 | 01 | 0 | DSGN-05 | unit | `bun vitest run src/lib/palette.test.ts -t "amountColorClass"` | ❌ W0 | ⬜ pending |
+| 01-01-03 | 01 | 0 | DSGN-03 | unit | `bun vitest run src/lib/palette.test.ts -t "headerGradient"` | ❌ W0 | ⬜ pending |
+| 01-01-04 | 01 | 0 | FIX-02 | unit | `bun vitest run src/components/InlineEditCell.test.tsx` | ❌ W0 | ⬜ pending |
+| 01-XX-XX | XX | X | DSGN-01 | manual | visual check — CSS oklch chroma values | manual-only | ⬜ pending |
+| 01-XX-XX | XX | X | DSGN-04 | manual | visual check — hero hierarchy | manual-only | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `cd frontend && bun add -d vitest @testing-library/react @testing-library/jest-dom @testing-library/user-event jsdom` — install test framework
+- [ ] `frontend/vite.config.ts` — add `test: { environment: 'jsdom', globals: true, setupFiles: ['./src/test-setup.ts'] }`
+- [ ] `frontend/src/test-setup.ts` — `import '@testing-library/jest-dom'`
+- [ ] `frontend/src/lib/palette.test.ts` — stubs for DSGN-02, DSGN-03, DSGN-05
+- [ ] `frontend/src/components/InlineEditCell.test.tsx` — stubs for FIX-02
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| All `:root` oklch values have non-zero chroma | DSGN-01 | CSS token values require visual browser inspection | Open app in browser, inspect `:root` variables, verify all color tokens have chroma > 0 |
+| FinancialOverview/AvailableBalance visual hierarchy | DSGN-04 | Typographic hierarchy is a visual judgment | Open dashboard, verify hero elements are visually dominant above secondary content |
+
+---
+
+## Validation Sign-Off
+
+- [ ] All tasks have `<automated>` verify or Wave 0 dependencies
+- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
+- [ ] Wave 0 covers all MISSING references
+- [ ] No watch-mode flags
+- [ ] Feedback latency < 10s
+- [ ] `nyquist_compliant: true` set in frontmatter
+
+**Approval:** pending