v0.155.74

• Cut the README to what a configuration says: the terms it uses, an example, the commands, and a table for each level of settings -- chase, a tier, its rules, an app, the operations' answers, a grant -- with what each app does and takes in a page of its own under docs/apps, each a settings table, an example and what the app is for, linking to the design notes already in docs (9929745)