Each limit/offset list method gains an iterator twin that walks pages
transparently and stops on the first short page — same endpoints, no new API
surface: Python generators (iter_tenant_streams / _stream_events / _windows /
_checkpoints / iter_fork_evidence / iter_tenant_ivc_epochs), TypeScript async
iterators (for await ... of client.iterTenantStreamEvents(...)), and a Go
Iterator with Next(ctx) returning (nil, nil) at exhaustion, plus Iter* twins
on the client. Tests drain a 3-page mocked response set in order and confirm
a short first page ends iteration after exactly one request. READMEs updated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
