#app-router

Persist Claude tool-call results across page reloads in Next.js (June 2026)

Resume Claude streams across browser reload with Last-Event-ID (June 2026)

Make a Claude turn survive a browser reload: server-side ring buffer keyed by message.id, the WHATWG Last-Event-ID header, and a Next.js App Router Route Handler that replays missed SSE frames in 180 ms. Measured June 2026 on claude-sonnet-4-6.