max / goingson

Render the modal form builder's fields in Rust openFormModal covers about fifteen callers, so this is most of the adoption in one place. It becomes async, which is transparent: no caller used its return value, every one is a bare statement call. Two translations worth naming, both places where the frontend had been saying something two ways: Selects. The old renderer marked an option selected on `opt.selected || opt.value === value`, and a dozen call sites compute `selected` from a comparison without also passing `value`. The description matches by value alone, which is the better contract, so the command reconciles the two rather than the crate: no value means take the value of whichever option marked itself. Dropping the flag would have silently unselected those. Checkboxes. The old renderer read truthiness off `value`; the description has an explicit on-or-off, so the spec sends `checked` and leaves `value` alone for everything else. The live-preview slot rides in as trailing markup rather than becoming a renderer feature. It is an empty div this module fills on input, its id has to agree with the lookup that fills it, and it is static markup authored here, so there is nothing for the emitter to decide. Note the ids are prefixed with formId and the names are not, which is what Filling::id_prefix is for. form.elements[field.name] collects the submission by name, so prefixing those would have broken every save.