Ports the timers lane's admin schema additions unchanged (field `group`,
`showWhen`, type `switch`, `optionsRoute`) so the two branches merge
cleanly, and extends them for modules whose settings are richer than a
handful of fields:
- manifest `configGroups[name]` = { collapsed: true | false | "whenSet",
columns: 2–4, help } — a credentials block that folds once it holds a
saved secret, a show/hide checklist laid out as a compact grid
- `help` on any field: one line of guidance under the control
- select options may carry `group` → rendered as <optgroup>s (a folder
tree browsable inside the select)
- `optionsDependsOn: "<key>"` refetches a select's options with that
field's current value as a query parameter, now and on every change
- a save re-runs the card's dynamic option fetches, so a list that needed
the just-saved credentials fills in without a page reload; a blank
"— choose —" is no longer added when the module offers its own blank
option
Documented in docs/MODULE-GUIDE.md.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
