curl "https://api.velixarai.com/v1/memory/list?user_id=user_123&limit=10" \
  -H "Authorization: Bearer vlx_your_key"

{
  "memories": [
    {
      "id": "mem_abc123",
      "content": "User prefers dark mode and metric units",
      "tier": 0,
      "type": "preference",
      "created_at": "2026-02-16T10:30:00Z"
    }
  ],
  "count": 1,
  "total": 42,
  "offset": 0,
  "limit": 10
}