4 plans across 3 waves: scaffold, registry+test stubs, Zod schemas and WizardState store (parallel wave 3).
Covers Vite 6 scaffold, Tailwind v4 CSS-first setup, Zod v4 + hookform/resolvers v5 compatibility, Backend Schema Registry pattern, WizardState useReducer design, and Vitest test map for phase success criteria. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>