Add a client company

curl -X POST https://api.clustr-ai.com/api/public/client-companies \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "Acme Corp", "linkedinUrl": "https://www.linkedin.com/company/acme-corp", "domain": "acme.com"}'

{
  "success": true,
  "data": {
    "item": {
      "key": "c:5b1f7c2e-8d0a-4c47-9d3e-2f6a1b9c0e11",
      "name": "Acme Corp",
      "linkedinUrl": "https://www.linkedin.com/company/acme-corp",
      "domain": "acme.com",
      "companyId": "5b1f7c2e-8d0a-4c47-9d3e-2f6a1b9c0e11",
      "inNetwork": true,
      "excluded": false,
      "exclusionId": "",
      "sources": [
        { "id": "0e7d6a52-...", "source": "manual", "crmProvider": "", "crmCompanyId": "" }
      ]
    }
  }
}

{
  "success": false,
  "error": { "message": "That company is already on your client list", "code": "already_listed" }
}

{
  "success": false,
  "error": { "message": "That's a person's profile, not a company page", "code": "invalid_linkedin_url" }
}