Function fresh

packages/app/src/context/server-session.ts:990–992

(sessionID: string, ttl: number)

      return (meta.limit[sessionID] ?? 0) <= limit
    },
    fresh(sessionID: string, ttl: number) {
      return Date.now() - (meta.at[sessionID] ?? 0) <= ttl
    },
    optimistic: {
      add(input: { sessionID: string; message: Message; parts: Part[] }) {
        const parts = input.parts