tRPC with React Query

Use tRPC v11 with the TanStack React Query integration (@trpc/react-query). Use queryOptions / mutationOptions factories — never the legacy trpc.useQuery wrapper hooks.

Server Setup

Initialize tRPC

// server/trpc.ts
import { initTRPC, TRPCError } from "@trpc/server"
import superjson from "superjson"
import { ZodError } from "zod"