docs: v0.16.0 features Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Wiki: Gateway API page Describes the Gateway API section: tables and Only problems, Gateway and route details, reverse links, topology, the request check and the hostname map with the implementation-specific choices, and the --gateway test-cluster fixture. Linked from Home, the sidebar, Using Sextant and Development.