curl --request POST \
  --url http://localhost:8000/v1/memory/search \
  --header 'Content-Type: application/json' \
  --data '
{
  "user_id": "alice",
  "query": "dark mode",
  "top_k": 10
}
'

{
  "results": [
    {
      "memory_id": "mem_3f7a1c2d9e4b",
      "content": "I prefer dark mode and short answers.",
      "category": "preference",
      "score": 0.94
    }
  ]
}