curl "https://api.crewship.dev/v1/threads?deployment_id=dep_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "threads": [
    {
      "thread_id": "thr_xyz789abc",
      "deployment_id": "dep_abc123",
      "status": "idle",
      "metadata": {"user_id": "user_1"},
      "values": null,
      "created_at": "2024-01-15T10:35:00Z",
      "updated_at": "2024-01-15T10:35:00Z"
    }
  ]
}