curl -X DELETE 'https://app.memorylake.cn/openapi/memorylake/api/v3/workspaces/ws_abc123def456/memories/conversations/conv_7d2e3f4a5b6c7d8e' \
  -H 'Authorization: Bearer sk_xxxxxx'

{
  "success": true,
  "message": "Conversation deleted successfully"
}