Function isTagValid

aitagging.js:91–98

(tag)

// Normalize a tag (lowercase, trim, remove special chars)
function normalizeTag(tag) {
  if (!tag || typeof tag !== 'string') return '';
  
  return tag
    .toLowerCase()
    .trim()
    .replace(/[^\w\s-]/g, '') // Remove special chars except hyphens
    .replace(/\s+/g, ' ') // Normalize whitespace
    .replace(/^3d\s+model$/i, '') // Remove "3d model" tag
    .trim();
}