curl https://api.crewship.dev/v1/threads/thr_xyz789abc \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "thread_id": "thr_xyz789abc",
  "deployment_id": "dep_abc123",
  "status": "idle",
  "metadata": {"user_id": "user_1"},
  "values": {"messages": [{"role": "user", "content": "Hello"}]},
  "created_at": "2024-01-15T10:35:00Z",
  "updated_at": "2024-01-15T10:40:00Z"
}