Function slugify

scripts/fungrim/gen-reference-doc.ts:275–276

(s: string)

const isHexId = (id: string) => /^[0-9a-f]{6}$/.test(id);
const slugify = (s: string) =>
  s.toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-|-$/g, '');

/** Render one identity entry into `lines`. */
function renderEntry(