---
phase: 1
slug: skeleton-driver-and-coexistence
status: complete
nyquist_compliant: true
wave_0_complete: true
created: 2026-03-21
updated: 2026-03-23
---

# Phase 1 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | PowerShell verification scripts (SteamVR driver — no unit test framework) |
| **Config file** | none — scripts run standalone |
| **Quick run command** | `powershell -ExecutionPolicy Bypass -File scripts/verify_driver.ps1` |
| **Full suite command** | `powershell -ExecutionPolicy Bypass -File scripts/verify_driver.ps1` |
| **Estimated runtime** | ~2 seconds (artifact checks), ~30 seconds (with SteamVR log parsing) |

---

## Sampling Rate

- **After every task commit:** Run `powershell -ExecutionPolicy Bypass -File scripts/verify_driver.ps1`
- **After every plan wave:** Run full verification script
- **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 |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 01-01-01 | 01 | 1 | DRIV-01, DRIV-02, DRIV-04 | build + artifact | `cmake --build build --config Release` | yes | green |
| 01-01-02 | 01 | 1 | DRIV-01 | artifact | `verify_driver.ps1` checks 2, 10 | yes | green |
| 01-02-01 | 02 | 1 | DRIV-03 | artifact + log | `verify_driver.ps1` checks 8, 11 | yes | green |
| 01-02-02 | 02 | 1 | FEAS-01 | log + manual | `verify_driver.ps1` check 13 | yes | green |
| 01-02-03 | 02 | 1 | FEAS-01 | manual | Hardware coexistence checkpoint | n/a | green |

---

## Wave 0 Requirements

Existing infrastructure covers all phase requirements. `scripts/verify_driver.ps1` provides 13 automated checks covering all 5 requirement IDs.

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Beyond 2 tracking/display/audio unaffected | FEAS-01 | Requires physical headset + SteamVR runtime | Wear headset, verify tracking smooth, display correct, audio functional |

---

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

**Approval:** passed

## Validation Audit 2026-03-23

| Metric | Count |
|--------|-------|
| Gaps found | 0 |
| Resolved | 0 |
| Escalated | 0 |