buildMetadataTokens function presentation ✓ 100.0%

function buildMetadataTokens(context?: StructuredSignalContext): string[] {
  if (!context) return [];
  const tokens: string[] = [];

  if (context.category && context.category !== "unknown") {
    tokens.push(`__cat_${context.category}`);
  }

  if (context.language) {
    tokens.push(`__lang_${context.language}`);
  }

  const dom = normalizeDomFeatures(context.domFeatures);
  if (dom.inputType) tokens.push(`__input_${dom.inputType}`);
  if (dom.pattern) tokens.push("__has_pattern");
  if (dom.maxLength !== undefined) {
    const bucket =
      dom.maxLength <= 4 ? "tiny" : dom.maxLength <= 14 ? "short" : "long";
    tokens.push(`__maxlen_${bucket}`);
  }

  return tokens;
}