Function isSoft404

background.js:549–552

(text)

}

function isSoft404(text) {
  const lower = text.toLowerCase();
  return soft404Indicators.some(i => lower.includes(i.toLowerCase()));
}

function truncateForStorage(text, max = 5000) {
  return text.length <= max ? text : text.substring(0, max) + '\n... [truncated]';