POST /v1/campaigns

curl -X POST https://api.vonative.com/v1/campaigns \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Customer Feedback Q1",
    "assistant_id": "a1b2c3d4-..."
  }'

{
  "success": true,
  "data": {
    "id": "camp-uuid-1234",
    "name": "Customer Feedback Q1",
    "status": "draft",
    "created_at": "2025-01-15T10:30:00Z"
  }
}