@bimetal/forms-headless

The canonical, framework-agnostic forms controllers — instance #9 of the BIMETAL component family, and the only one that ships two:

• createFormBuilderController — edits the SCHEMA (add/reorder/edit/remove fields, drag reorder, undo). Event-sourced through @bimetal/forms-data.
• createFormRendererController — FILLS the form: transient values, live validation from the schema, submit → onSubmit. It also owns an embedded picker controller per select field — creating, syncing and destroying it, so no binding builds a picker lifecycle.

Both share the identity-stable getSnapshot/subscribe contract from @bimetal/headless-core, and both surface failures as state (lastAction) rather than throwing into the binding.

RendererFieldView carries the derived a11y facts — required, invalid and which satellite texts describe the field — so the five bindings agree on what a screen reader is told.