Adds a 'radio' SettingType the registry-driven admin form can render. Same
shape as 'select' (options list, enum validation, resolved/source badges),
but renders inline radio cards instead of a dropdown so each option's
consequences sit side-by-side for the admin.
Adopted on the two highest-stakes Documenso behaviour toggles:
- `eoi_send_mode` — Manual vs Auto signing-invitation dispatch
- `documenso_signing_order` — Parallel vs Sequential recipient flow
Both choices are binary and materially different (one auto-sends mail, the
other doesn't; one routes signing serially, the other in parallel), so the
upfront comparison beats a hidden dropdown.
`documenso_redirect_url` keeps its url-input — it's already a single
free-text field with no enum.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Matt
7bdfc340ae