Function markdown_summary_with_limit

fn markdown_summary_with_limit(
    md: &str,
    link_names: &[RenderedLink],
    length_limit: usize,
) -> (String, bool)

Renders a subset of Markdown in the first paragraph of the provided Markdown.

• Italics, bold, and inline code styles are rendered.
• Headings and links are stripped (though the text is rendered).
• HTML, code blocks, and everything else are ignored.

Returns a tuple of the rendered HTML string and whether the output was shortened due to the provided length_limit.