Initial commit: Next.js scaffold, Request entity, Prisma+Zod, Tailwind v4+shadcn

- Next.js 14 (TS, App Router) monolith
- Request entity (Draft state) via Prisma + Postgres, validated with Zod
- ESLint configured
- Tailwind v4 + shadcn/ui (new-york-v4 style)
- Vitest test suite (6 tests, runs against throwaway Postgres DB per file)
- Multi-agent dev workflow docs in CLAUDE.md and .claude/agents/

src/lib/utils.ts

@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}