---
phase: 33
slug: currency-system
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-04-13
---

# Phase 33 — Validation Strategy

> Per-phase validation contract for feedback sampling during execution.

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | Bun test runner + Playwright |
| **Config file** | `bunfig.toml` / `playwright.config.ts` |
| **Quick run command** | `bun test` |
| **Full suite command** | `bun test && bun run test:e2e` |
| **Estimated runtime** | ~15 seconds (unit) + ~60 seconds (e2e) |

---

## Sampling Rate

- **After every task commit:** Run `bun test`
- **After every plan wave:** Run `bun test && bun run test:e2e`
- **Before `/gsd-verify-work`:** Full suite must be green
- **Max feedback latency:** 15 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Threat Ref | Secure Behavior | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|------------|-----------------|-----------|-------------------|-------------|--------|
| 33-01-01 | 01 | 1 | D-01, D-02 | — | N/A | unit | `bun test tests/services/currency.service.test.ts` | ❌ W0 | ⬜ pending |
| 33-01-02 | 01 | 1 | D-08, D-09 | — | N/A | unit | `bun test tests/services/currency.service.test.ts` | ❌ W0 | ⬜ pending |
| 33-02-01 | 02 | 2 | D-01 | — | N/A | integration | `bun test tests/services/market-price.service.test.ts` | ❌ W0 | ⬜ pending |
| 33-02-02 | 02 | 2 | D-04, D-05 | — | Ownership validation | integration | `bun test tests/services/community-price.service.test.ts` | ❌ W0 | ⬜ pending |
| 33-03-01 | 03 | 3 | D-12, D-14 | — | N/A | unit | `bun test tests/lib/formatters.test.ts` | ❌ W0 | ⬜ pending |
| 33-03-02 | 03 | 3 | D-16 | — | N/A | e2e | `bun run test:e2e --grep "currency"` | ❌ W0 | ⬜ pending |

*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*

---

## Wave 0 Requirements

- [ ] `tests/services/currency.service.test.ts` — stubs for rate fetching, caching, conversion
- [ ] `tests/services/market-price.service.test.ts` — stubs for market price CRUD
- [ ] `tests/services/community-price.service.test.ts` — stubs for community price submission + ownership validation
- [ ] `tests/lib/formatters.test.ts` — stubs for dual display format, conversion labels

*Existing test infrastructure (Bun test runner, createTestDb helper) covers framework needs.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Auto-suggestion via browser locale | D-13 | Requires browser environment with locale | Open app in incognito, verify suggestion matches browser locale |
| Dual display format readability | D-14 | Visual check | Verify converted prices show `€2,000 (~$2,160)` format |
| Community price aggregation display | D-21 | Requires seeded community data | Seed 3+ price reports, verify "Users in DE typically pay..." display |

---

## 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 < 15s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending
