Restyle the contact-change form with house CIBG surfaces instead of hand-rolled
markup: the read-only BRP address now uses app-data-block/app-data-row (grey
datablock), and the phone field sits in a plain <fieldset> inside the existing
.form-horizontal form (inherits the CIBG grey box). No new CSS surfaces; row keys
reuse the address.* i18n ids. Logic/machine/specs unchanged.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Reshape the adreswijziging form into a contact-change form: the BRP address is
authoritative and shown read-only (you change it at the gemeente), and the phone
number becomes the editable/submittable field. New Telefoonnummer value object
(parse-don't-validate); backend RejectPhoneChange re-validates as authority.
POST /change-requests now carries { telefoon } (typed client regenerated).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>