---
phase: 13
slug: data-flow-architecture-document
status: draft
nyquist_compliant: true
wave_0_complete: true
created: 2026-03-22
---

# Phase 13 -- Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | N/A (documentation-only phase) |
| **Config file** | none |
| **Quick run command** | `test -f .planning/DATA-FLOW.md && echo PASS` |
| **Full suite command** | `test -f .planning/DATA-FLOW.md && grep -q "github_profile_url" .planning/DATA-FLOW.md && echo PASS` |
| **Estimated runtime** | ~1 second |

---

## Sampling Rate

- **After every task commit:** Verify output file exists and contains expected sections
- **After every plan wave:** Full content review against success criteria
- **Before `/gsd:verify-work`:** All 7 success criteria checkable via grep
- **Max feedback latency:** 1 second

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 13-01-01 | 01 | 1 | SC-1 | file check | `test -f .planning/DATA-FLOW.md` | N/A (creates file) | pending |
| 13-01-02 | 01 | 1 | SC-2 | grep | `grep -c "## Recipients\|## Cards\|## Products\|## Serial" .planning/DATA-FLOW.md` | N/A | pending |
| 13-01-03 | 01 | 1 | SC-3 | grep | `grep -q "## Rules" .planning/DATA-FLOW.md` | N/A | pending |
| 13-01-04 | 01 | 1 | SC-6 | grep | `grep -q "github_profile_url" .planning/DATA-FLOW.md` | N/A | pending |
| 13-02-01 | 02 | 1 | SC-7 | grep | `grep -q "DATA-FLOW.md" CLAUDE.md` | exists | pending |

*Status: pending / green / red / flaky*

---

## Wave 0 Requirements

Existing infrastructure covers all phase requirements. No test framework needed -- this phase produces markdown documentation only.

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Document completeness | SC-1 through SC-6 | Content quality requires human review | Read DATA-FLOW.md end-to-end, verify all layers documented with field tables and diagrams |
| CLAUDE.md tone | SC-7 | Enforcement blurb tone is subjective | Read CLAUDE.md addition, verify it's clear and actionable |

---

## Validation Sign-Off

- [x] All tasks have automated verify or Wave 0 dependencies
- [x] Sampling continuity: no 3 consecutive tasks without automated verify
- [x] Wave 0 covers all MISSING references
- [x] No watch-mode flags
- [x] Feedback latency < 1s
- [x] `nyquist_compliant: true` set in frontmatter

**Approval:** pending