---
phase: 13
slug: slider-persistence-hardening
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-03-29
---

# Phase 13 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | Manual + CLI verification (C++ driver, no unit test framework) |
| **Config file** | none |
| **Quick run command** | `"C:/Program Files (x86)/Microsoft Visual Studio/2022/BuildTools/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/bin/cmake.exe" --build build --config Release` |
| **Full suite command** | Build + deploy + SteamVR restart cycle |
| **Estimated runtime** | ~30 seconds (build only) |

---

## Sampling Rate

- **After every task commit:** Run build command
- **After every plan wave:** Build + deploy to SteamVR
- **Before `/gsd:verify-work`:** Full build must succeed
- **Max feedback latency:** 30 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| TBD | 01 | 1 | SLIDER-03 | build + manual | Build succeeds | TBD | ⬜ pending |
| TBD | 01 | 1 | SLIDER-04 | build + manual | Build succeeds | TBD | ⬜ pending |
| TBD | 01 | 1 | HARD-03 | build + manual | Build succeeds | TBD | ⬜ pending |

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

---

## Wave 0 Requirements

*Existing infrastructure covers all phase requirements.*

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## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| IPD persists across SteamVR restart | SLIDER-03 | Requires live headset + SteamVR | Set IPD via slider, restart SteamVR, verify IPD preserved |
| lighthouse_console failure non-blocking | HARD-03 | Requires simulating tool absence | Rename lighthouse_console.exe, change IPD, verify live change works |
| Correct lighthouse serial used | SLIDER-04 | Requires headset HID data | Check log output matches headset serial |

---

## 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