From 41b7c8ec93db21d77ca048f81139854041e3feb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christopher=20M=C3=BChl?= <toki@toph.so>
Date: Wed, 8 Apr 2026 15:20:46 +0200
Subject: [PATCH] docs(04): add validation strategy

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 .../04-heatmap-interaction/04-VALIDATION.md   | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 .planning/phases/04-heatmap-interaction/04-VALIDATION.md

diff --git a/.planning/phases/04-heatmap-interaction/04-VALIDATION.md b/.planning/phases/04-heatmap-interaction/04-VALIDATION.md
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+---
+phase: 4
+slug: heatmap-interaction
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-08
+---
+
+# Phase 4 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | Vitest 3.x (JS) + PHPUnit (PHP) |
+| **Config file** | `vitest.config.ts` / `phpunit.xml.dist` |
+| **Quick run command** | `npx vitest run` |
+| **Full suite command** | `npx vitest run && php vendor/bin/phpunit` |
+| **Estimated runtime** | ~5 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `npx vitest run`
+- **After every plan wave:** Run `npx vitest run && php vendor/bin/phpunit`
+- **Before `/gsd-verify-work`:** Full suite must be green
+- **Max feedback latency:** 5 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Threat Ref | Secure Behavior | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|------------|-----------------|-----------|-------------------|-------------|--------|
+| 04-01-01 | 01 | 1 | HEAT-07 | — | N/A | unit | `npx vitest run` | ❌ W0 | ⬜ pending |
+| 04-01-02 | 01 | 1 | INTR-01 | — | N/A | unit | `npx vitest run` | ❌ W0 | ⬜ pending |
+| 04-02-01 | 02 | 2 | TEST-04 | — | N/A | unit | `npx vitest run` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- Existing test infrastructure covers all phase requirements (Vitest + jsdom already configured from Phase 3).
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Click navigates to Kimai timesheet | HEAT-07 | window.location.href mock in jsdom | Verify in browser: click cell, check URL |
+| Filter dropdown visual placement | INTR-01 | Layout/positioning | Visual inspection in browser |
+
+---
+
+## 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