nexus/.planning/phases/41-diagrams-icons-theme-engine/41-VALIDATION.md

phase	slug	status	nyquist_compliant	wave_0_complete	created
41	diagrams-icons-theme-engine	draft	false	false	2026-04-04

Phase 41 — Validation Strategy

Per-phase validation contract for feedback sampling during execution.

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Test Infrastructure

Property	Value
Framework	vitest
Config file	vitest.config.ts
Quick run command	pnpm test --run
Full suite command	pnpm test --run
Estimated runtime	~45 seconds

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Sampling Rate

• After every task commit: Run pnpm test --run
• After every plan wave: Run pnpm test --run
• Before /gsd:verify-work: Full suite must be green
• Max feedback latency: 45 seconds

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Per-Task Verification Map

Task ID	Plan	Wave	Requirement	Test Type	Automated Command	File Exists	Status
41-02-01	02	2	DIAG-01, DIAG-02	unit	npx vitest run server/src/services/renderers/__tests__/diagram-renderer.test.ts	❌ W0	⬜ pending
41-02-02	02	2	ICON-01, ICON-02, ICON-03	unit	npx vitest run server/src/services/renderers/__tests__/icon-renderer.test.ts	❌ W0	⬜ pending
41-03-01	03	2	THEME-01, THEME-02, THEME-03	unit	npx vitest run server/src/services/renderers/__tests__/theme-engine.test.ts	❌ W0	⬜ pending
41-04-01	04	3	DIAG-03, DIAG-04, DIAG-05	unit	npx vitest run ui/src/components/DiagramSourcePanel.test.tsx	❌ W0	⬜ pending
41-05-01	05	3	THEME-04, THEME-05, THEME-06, THEME-07	unit	npx vitest run ui/src/components/ThemePreviewPanel.test.tsx	❌ W0	⬜ pending
41-06-01	06	4	ALL	integration	pnpm test --run	❌ W0	⬜ pending

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

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Wave 0 Requirements

• Test stubs for diagram renderer (Mermaid + DOMPurify + LLM synthesis)
• Test stubs for icon renderer (LLM SVG + SVGO)
• Test stubs for OKLCH palette engine (culori + wcag-contrast)
• Test stubs for DiagramSourcePanel (collapsible, copy, re-render)
• Test stubs for ThemePreviewPanel (scoped CSS injection)

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Manual-Only Verifications

Behavior	Requirement	Why Manual	Test Instructions
Mermaid diagram renders visually correct	DIAG-01	Requires visual inspection	Submit diagram prompt, verify rendered SVG looks correct
Icon set is visually cohesive	ICON-01	Subjective visual quality	Generate icon set, verify icons look consistent
Theme live preview in Nexus UI	THEME-04	Requires browser interaction	Pick seed color, verify CSS vars apply in preview container
WCAG AA contrast visible	THEME-03	Requires visual contrast check	Generate palette, verify PASS/FAIL badges match computed contrast

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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 < 45s
• nyquist_compliant: true set in frontmatter

Approval: pending