2 PRs for streaming (to be reviewed in this order): • fix(sdk): persist events before publishing them, return the assigned seq • feat(agent-server): add /sockets/session/{id} with a non-Event envelope The second one includes a new endpoint designed for the new streaming architecture (though it currently only supports non-streaming responses, as a PR for the SDK is still needed). Once we confirm everything works, we can deprecate the old endpoint and replace it with this one. I also added an architecture section to the PR to explain what it does and the idea behind it. Appreciate your feedback! (Does the endpoint name look good?)

approved 4806, left one question on 4807

Thanks for the reviews. I answered the comment :-)