docs(06): add research and validation strategy

.planning/phases/06-wire-icon-intunewin/06-VALIDATION.md

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+---
+phase: 6
+slug: wire-icon-intunewin
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-10
+---
+
+# Phase 6 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | pytest |
+| **Config file** | none — runs via `python -m pytest` |
+| **Quick run command** | `python -m pytest tests/test_packages.py -x -q` |
+| **Full suite command** | `python -m pytest tests/ -q` |
+| **Estimated runtime** | ~5 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `python -m pytest tests/test_packages.py -x -q`
+- **After every plan wave:** Run `python -m pytest tests/ -q`
+- **Before `/gsd:verify-work`:** Full suite must be green
+- **Max feedback latency:** 5 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 06-01-01 | 01 | 1 | PKG-04 | integration | `python -m pytest tests/test_packages.py::test_intunewin_includes_icon -x -q` | ❌ W0 | ⬜ pending |
+| 06-01-02 | 01 | 1 | PKG-04 | integration | `python -m pytest tests/test_packages.py::test_intunewin_without_icon_succeeds -x -q` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `tests/test_packages.py` — add `test_intunewin_includes_icon` (monkeypatch `build_intunewin` to capture staging dir contents)
+- [ ] `tests/test_packages.py` — add `test_intunewin_without_icon_succeeds` (baseline: export without icon)
+
+*Existing test infrastructure covers the rest — no new files or fixtures needed.*
+
+---
+
+## Manual-Only Verifications
+
+*All phase behaviors have automated verification.*
+
+---
+
+## 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 < 5s
+- [ ] `nyquist_compliant: true` set in frontmatter
+
+**Approval:** pending