Recently, I've started using phpbb (with a docker-compose setup from Bitnami) for keeping personal notes. I find that it works better than pretty much everything I've used before. I like that when I reply to a thread to add an update, that post raises to the top, so it's harder to lose items.
This is exactly my use-case for a fossil repo with the built-in forum, with the default provided sorting. Fleeting notes get migrated as needed to Wiki pages (capability for which is also built-in).
Demonstration of default settings: https://fossil-scm.org/forum/forum ("most recent threads" is equivalent to "most recently updated thread")
