Complete procedures with a way back.

Create a durable Node.js chatbot with OpenAI Conversations, typed response streaming, safe cancellation, transcript recovery, duplicate protection, explicit retention and deletion, real failure drills, and a production release gate.

Build an authenticated Claude chat service that persists application-owned conversation turns, streams typed content blocks, distinguishes every stop reason, handles cancellation and browser reconnection, and never duplicates a model turn after an ambiguous disconnect.