The appointment is booked on a device, and SessionExecutor already stamps that
device onto every area record when the session starts. The area form still
showed a device select — pre-filled, but a select — so the operator was asked
to make a decision that had already been made at booking time.
The inherited device is now read-only text. A "تغییر" button reveals the
select, for the one case that still needs it: the appointment was booked on the
wrong device. An appointment with no resource at all still gets the select
outright, with a hint saying why.
Also in this file: the parameter fields wrapped a label and a SearchableSelect
inside `.field`, which is itself the bordered input box — two nested boxes. They
are `.field-block` now, each control labelled by id. The note textarea gets
`cp-textarea`; it had no styling at all. Session and area counts go through
formatNumber, so the page no longer mixes Latin and Persian digits.
Adds the test file the page never had.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
