Nothing imports it any more: its only two consumers were the open-partial
routes, which now run the transport-neutral range handler in core so that
standalone gets them too.
Drops the package along with its workspace dependency, three tsconfig
project references, its CI test and Codecov steps, the coverage flag, the
Nix components entry and the two monorepo structure listings.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
