3.5.1

Worker polls negotiate response progress with supporting Servers and preserve terminal status, refusal details and retry headers. Older Servers continue returning ordinary JSON. Complete request deadlines remain bounded, including continuously arriving progress, and worker warnings name early cutoff duration and configured wait. Retries preserve their poll identity.

The documentation validation dependency is updated to the patched URI parser.

Full source qualification and retained checks: PR #218. This SDK component does not complete Server #526; task-delivery recovery and a fixed published Server image remain open.