Per the MCP Apps 2026-01-26 spec, servers SHOULD check client capabilities
before advertising UI-enabled tools. Extend the inventory strip gate to
remove _meta.ui not only when the feature flag is off, but also when the
request context explicitly reports the client lacks UI support
(HasUISupport returns supported=false, ok=true).
When the capability is unknown (ok=false, e.g. stdio paths), fall through
to the existing feature-flag gate so existing behaviour is preserved.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Matt Holloway
561a4a7951