The dice engine lived under md-commander/hooks but is shared by :md-dice, spark tables, the journal /roll command, and dice inside variable expressions. Move it to src/components/dice so the md-commander widget can be retired without losing rolling.
Also promote the browser-console harness to a real jest suite; the file was named test.ts, so jest never ran it.
Introduces `plainDetail` to the dice engine to provide a non-HTML
version of the roll results. This allows components to display
the roll breakdown without needing to parse or render HTML.
hyper
hypercross