Apparently I had to write ~500 lines of code to display a blank page with a summary of shortcuts. Yes.
Install, then create a shortcuts.yaml file in ~/.cheesecuts with the following format:
groups:
- General
shortcuts:
- name: Alfred
keys: ⌘ Spacebar
group: General
- name: AltTab
keys: ⌘ Tab
group: General
- name: Quit app
keys: ⌘ Q