A search result's snippet of a reply renders its Markdown through Streamdown, as the reply itself does, so the web app no longer depends on react-markdown or remark-gfm. It uses Streamdown's Block rather than the Streamdown component, which would wrap the snippet's run of text in a div and complete the Markdown the snippet's cut left open, so the snippet renders the same elements as before and the tests pass unchanged. The plugin that marks matches is a named function, since Streamdown caches its parsers by the names of their plugins.