Generic Lwt adapter for Awskit S3.
The public entrypoint is Awskit_s3_lwt. This package connects the runtime-neutral Awskit_s3 operation surface to a caller-supplied Awskit Lwt runtime.
Use it when an application needs a custom Lwt HTTP backend. Use the awskit-s3-lwt-unix package when the ready Lwt + Unix S3 client is enough.
Use Awskit_s3_lwt.Make with a Cohttp_lwt.S.Client implementation when the application owns the Lwt HTTP backend, context, credentials, region, clock, retry sleep, and timeout policy.
This package exposes the S3 operation modules, in-memory body helpers, and Body.of_lwt_stream for custom streaming uploads. It intentionally does not own Unix local-path helpers or managed file transfer helpers; those live in awskit-s3-lwt-unix.
Custom stream bodies must declare the exact content_length. Mark them replayable only when retrying can recreate the same bytes from the beginning. Response readers are scoped to the Object.get consumer callback.