I’m sure part of it is secret source but Vlad (CEO) is a lovely, helpful chap - I’m sure if you dropped an open question on the Kagi forums, he or someone else

I’m sure part of it is secret source but Vlad (CEO) is a lovely, helpful chap - I’m sure if you dropped an open question on the Kagi forums, he or someone else might be able to point you to some of the technologies or patterns used.