I've been using mdBook for awhile to keep a personal journal and also separately to keep a work log.
I really like being able to keep notes in Markdown tracked in git and at the same time being able to view and search through those notes in the form of a nice looking web book.
I leave it in standard configuration, but fill in Summary.md by adding new content to the top. That way when I open it I see the most recent notes first.
I have a shell script that opens vscode and starts mdbook. For my journal the script also checks to see if there's an entry for today. If there isn't, it will add one to the top of Summary.md, which then creates a new file for me to write in for that day. In the meantime mdbook has opened up the book for me to look at that side.
When I open the book I see what I wrote more recently and can also go back to documents from the past.
I really like being able to keep notes in Markdown tracked in git and at the same time being able to view and search through those notes in the form of a nice looking web book.