docs(phase-07): add validation strategy

.planning/phases/07-dashboard-nav-polish/07-VALIDATION.md

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+---
+phase: 7
+slug: dashboard-nav-polish
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-10
+---
+
+# Phase 7 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | pytest |
+| **Config file** | none — discovered via convention |
+| **Quick run command** | `pytest tests/test_static.py -x` |
+| **Full suite command** | `pytest tests/ -x` |
+| **Estimated runtime** | ~5 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `pytest tests/test_static.py -x`
+- **After every plan wave:** Run `pytest tests/ -x`
+- **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 |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 07-01-01 | 01 | 0 | SC-1,2,3 | integration | `pytest tests/test_static.py -x` | ✅ (add tests) | ⬜ pending |
+| 07-01-02 | 01 | 1 | SC-1 | integration | `pytest tests/test_static.py::test_packages_returns_200 -x` | ❌ W0 | ⬜ pending |
+| 07-01-03 | 01 | 1 | SC-2,3 | integration | `pytest tests/test_static.py::test_dashboard_shows_recent_printers -x` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `tests/test_static.py` — add `test_packages_returns_200`, `test_dashboard_shows_recent_printers`, `test_dashboard_shows_recent_packages` (file exists, add to it)
+- [ ] `imptune/templates/packages.html` — new template file needed
+
+*Existing infrastructure covers framework install — pytest already available.*
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Nav link highlights active on /packages | UX polish | CSS active-class visual state | 1. Navigate to /packages 2. Verify nav item is visually highlighted |
+
+---
+
+## 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