kit: a variadic argument can arrive by name, so a search op is callab…

…le over HTTP

Stop the output schema recursing on a self-referential record

Ops can serve without taking the command line, and mcp says it is lis…

…tening

kit: read struct tags through an embedded envelope

render: keep the Stringer case off times

render: fmt.Stringer in table cells

kit: positional args over HTTP by name

render: --fields reaches hidden fields