I have a single feature i miss from Kagi - optional search history - i sometimes find myself unable to find exactly that article/bloggpost/documentation i found using some search words i don't remember from last week.
https://kagifeedback.org/d/4065-query-personal-search-histor...
I recently used my old Google search history to find something from 2022 (two years ago) and 2017 (seven years ago).
Browser history is too short, and has a terrible interface for searching/browsing more than a few days back.