alt Hacker NewsRight now it seems like the project is just a thin wrapper over Brave Search. Building a complete search engine is way harder than that. You could look into using https://github.com/MarginaliaSearch/MarginaliaSearch if you want to run a real search index - https://marginalia-search.com/ is powered by it.
Yup, it is pretty much just a better frontend for existing search. I want to build my own index and ranking algorithm in the future, but sadly it's quite resource intensive so it will depend on financial viability a bit in terms of timeframe.