I am using also similar append only log like for every day, I usually try to write down the flows/random ideas/doing/done items there. I haven't brought in a structure overhead so everything is in a single file(couple thousand lines long) plain text file. My main idea is to keep everything sectioned by dates # dd-mm-YYYY # which is really great. I use sublime search and grep which works really great to lookup some older context and commands. Also going back to couple years old notes is really easy and valuable why some of the decisions were made.
- KISS