Function hasMarkdownSyntax

src/components/Markdown.tsx:67–71

(s: string)

// One pass instead of 10× includes scans.
const MD_SYNTAX_RE = /[#*`|[>\-_~]|\n\n|^\d+\. |\n\d+\. /;
function hasMarkdownSyntax(s: string): boolean {
  // Sample first 500 chars — if markdown exists it's usually early (headers,
  // code fence, list). Long tool outputs are mostly plain text tails.
  return MD_SYNTAX_RE.test(s.length > 500 ? s.slice(0, 500) : s);
}
function cachedLexer(content: string): {
  tokens: Token[];
  cacheKey?: string;