Ask HN: What Process/Applications Do You Use for Todo/Knowledge Management?

Like many of you, I have spent more time trying out different applications in the todo list/knowledge management space without finding a solution that has stuck. I've tried aggressive calendar scheduling, todo.txt, Vikunja, a paper planner, Logseq, Notion, and likely others along the way! I now have the suspicion that the issue I'm having isn't the tooling, but the process. The solution I've stuck with the longest has been Vikunja, but I felt limited by it as it is strictly a todo application, and doesn't support any form of knowledge management (by design, which makes sense!)

So I'm wondering, what processes do people follow for their todo list management and knowledge management? What resources have you learned how to use your applications of choice?

My requirements (in rough priority order):

- Mobile + Desktop support (PWA, web UI, native application, all fine!)

- Searchable

- Allows me to keep track of todos with priority ordering and sublists

- Allows me to easily capture one-off ideas, as well as expand them into richer, more detailed concepts

- FOSS + Self-Hostable

The issues I've faced with previous solutions are:

- No integration between my todos and knowledge!

- Not being able to search

- Not being able to quickly capture ideas/notes/todos

- Not having a clean(-ish) UX to navigate between points of info/see what my next priorities are