Zsh prompt improvements

jd-prompt is a zsh prompt helper for Johnny.Decimal paths.

Johnny.Decimal paths can be long. This is by design: you should name your folders expressively, for human consumption. But then you end up with something like:

/Users/Shared/D25 Johnny.Decimal/10-19 Business administration/11 The business & its people/11.11 Structure & registrations

This utility shortens this to only show the system ID and the final path segment:

D25:ā€¦/11.11 Structure & registrations

It requires the standard config file: see configuration.

The code and documentation is at cli.johnnydecimal.com. I won't repeat it here as I'll just forget to update it.