Add buyer titles

curl -X POST https://api.clustr-ai.com/api/public/buyer-titles \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"keywords": ["CFO", "Head of Finance"]}'

{
  "success": true,
  "data": {
    "inserted": 2,
    "total": 2,
    "rematches_existing_prospects": true,
    "matching_note": "Keywords and exclusions apply to everyone in your workspace, including people already imported. They also decide who your next ingestion run brings in."
  }
}