getting-help gains a "Hints" section — F1 for a tier-3 teaching hint on the
live input, `hint` to explain the most recent error — with the real rendered
block and a cast showing both: the live-input hint (via the demo-mode
Ctrl-G→[F1] alias, since autocast can't send F1) and `hint` on an error.
the-assistive-editor points at F1. Page converted to .mdx to embed the cast;
CtrlG added to the cast generator's key map.
claude@clouddev1
c84a640259