Chat Experience

This skill builds on ai-core. Read it first for critical rules.

Setup — Minimal Chat App

Server: API Route (TanStack Start)

// src/routes/api.chat.ts
import { createFileRoute } from '@tanstack/react-router'
import { chat, toServerSentEventsResponse } from '@tanstack/ai'
import { openaiText } from '@tanstack/ai-openai'