refactor(resource): drop the branch domain from resources

Resources never needed a branch: devices and rooms belong to the clinic
itself, and the picker always had exactly one option — a mandatory click
that decided nothing.

- `address_uuid` is now optional on resource and pool creation; when it is
  missing the environment's own address is used. Clients still sending it
  keep working.
- The panel no longer asks for or displays a branch anywhere: resource
  form, list column and filter, pool form and column, detail row, and the
  resource-first booking page.
- Availability no longer gates on `doctor_addresses.active`. That gate shut
  down every device of a clinic whose address row happened to be inactive,
  with a message no page in the panel could act on — no endpoint writes
  that column at all.

`address_id` stays on the resource: the timezone and the tenant pair are
derived from it. It is simply no longer the user's decision.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/admin/components/appointments/TurnsTimeline.tsx

@@ -193,7 +193,6 @@ const EMPTY_REASON_TEXT: Record<string, { title: string; hint: string }> = {
   tenant_holiday:    { title: 'این روز تعطیل است',         hint: 'در تقویم تعطیلات مجموعه، این روز تعطیل ثبت شده' },
   exception:         { title: 'استثنای تقویم',             hint: 'کل ساعت کاری این روز با استثنای منبع پوشیده شده است' },
   resource_inactive: { title: 'این منبع غیرفعال است',      hint: 'برای نوبت‌دهی، منبع را از صفحهٔ «منابع» فعال کنید' },
-  address_inactive:  { title: 'شعبهٔ این منبع غیرفعال است', hint: 'تا وقتی شعبه غیرفعال باشد، منابعش نوبت نمی‌گیرند' },
 };
 
 export default function TurnsTimeline({