[time4tea]

Its what commit messages are for!

The diff tells the 'what' - no point in writing 'added method bob()'

The message tells the why.

You can bet that over time, the jiras, the issues and the confluence, slack, o365, will all have been deleted, "upgraded" or whatever, and all you have is what's in the repo.

Using in-repo ADR, and in-repo 'what's missing, what's next' files are also useful, because they co-evolve with the code.