---
phase: 02
slug: data-persistence-file-management
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-03-12
---

# Phase 2 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | pytest (Python) + Flask test client |
| **Config file** | tests/ (Wave 0 creates) |
| **Quick run command** | `pytest tests/test_api.py -v` |
| **Full suite command** | `pytest tests/ -v` |
| **Estimated runtime** | ~15 seconds |

---

## Sampling Rate

- **After every task commit:** Run `pytest tests/test_api.py -v`
- **After every plan wave:** Run `pytest tests/ -v`
- **Before `/gsd-verify-work`:** Full suite must be green
- **Max feedback latency:** 30 seconds

---

## Per-task Verification Map

| task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 02-01-01 | 01 | 1 | BACK-04 | API | `pytest tests/test_api.py::test_list_files -v` | ⚠️ W0 | ⬜ pending |
| 02-01-02 | 01 | 1 | FILE-01 | API | `pytest tests/test_api.py::test_get_file_contents -v` | ⚠️ W0 | ⬜ pending |
| 02-01-03 | 01 | 1 | FILE-04 | API | `pytest tests/test_api.py::test_delete_file -v` | ⚠️ W0 | ⬜ pending |
| 02-02-01 | 02 | 1 | FILE-02 | UI | Browser test or manual | - | ⬜ pending |
| 02-02-02 | 02 | 1 | FILE-03 | UI | Manual (touch scroll) | - | ⬜ pending |
| 02-02-03 | 02 | 2 | FILE-05 | API | `pytest tests/test_api.py::test_export_tideda -v` | ⚠️ W0 | ⬜ pending |

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

---

## Wave 0 Requirements

- [ ] `tests/conftest.py` — Flask test client fixture
- [ ] `tests/test_api.py` — API endpoint stubs for:
  - `test_list_files`
  - `test_get_file_contents`
  - `test_delete_file`
  - `test_export_tideda`
- [ ] `tests/__init__.py` — Package marker

*Existing Flask test client pattern from src/app.py can be reused.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| File list scroll navigation | FILE-03 | Touch UI interaction | Visit /files, scroll through list |
| File content display formatting | FILE-02 | Visual verification | Click file, verify content renders |
| Delete confirmation dialog | FILE-04 | UX flow | Click delete, verify confirmation |
| tidEDA export download | FILE-05 | File download | Click export, verify file downloads |

*These require browser/UI interaction that automated tests don't reliably capture.*

---

## 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 < 30s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending