feat(appointment-settings): let clinics manage each member doctor's booking

The API and React components were already parameterized by doctor uuid, but 14
copy-pasted identity checks limited every endpoint to "the doctor themselves or
an admin", so a clinic owner could not touch a member doctor's booking setup.

- Replaces those 14 checks with one denyDoctorAccess() that also admits the
  owner of a clinic the doctor belongs to, and a member doctor holding the
  clinic's appointment_settings permission (view for GET, update for writes).
  A doctor's own settings short-circuit before any permission lookup.
- Moves ScheduleSection and its tabs out of DoctorDetailPage into
  components/schedule/ScheduleSection.tsx so the doctor panel and the new
  clinic page render the same module instead of one page importing another.
  Pure relocation — no logic changed.
- Adds ClinicAppointmentSettingsPage: one tab per clinic doctor, each rendering
  that same section. The tab wrapper is keyed by doctor uuid so in-progress
  schedule edits cannot leak onto the wrong doctor.
- insurance-pricing accepts an optional doctor_uuid (query on GET, body on PUT)
  under the same access rule, so the visit-price card works inside the clinic
  tabs. Fixes saveInsurancePricing calling getInsurancePricing with the wrong
  argument by extracting the shared pricingPayload().

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

assets/admin/components/layout/PurchaseSubscriptionSidebar.tsx

@@ -20,6 +20,7 @@ const NAV_ITEMS: NavItem[] = [
   { key: 'subscription',   label: 'خرید اشتراک',    to: '/admin/subscription' },
   { key: 'payment',        label: 'مدیریت پرداخت',   to: '/admin/my-financial' },
   { key: 'appointment',    label: 'مدیریت نوبت دهی', to: '/admin/appointment-settings', roles: ['doctor'] },
+  { key: 'appointment',    label: 'مدیریت نوبت دهی', to: '/admin/settings/appointment-settings', roles: ['clinic'] },
   { key: 'insurance',      label: 'مدیریت بیمه',     to: '/admin/insurance-pricing' },
   { key: 'discounts',      label: 'مدیریت تخفیف‌ها', to: '/admin/discounts', roles: ['doctor', 'clinic'] },
   { key: 'tags',           label: 'تگ ها',           to: '/admin/tags-settings' },

assets/admin/components/layout/SettingsLayout.tsx

@@ -23,6 +23,7 @@ export const SETTINGS_MENU: SettingsMenuItem[] = [
   { key: 'subscription', label: 'خرید اشتراک',       icon: CreditCardIcon,           to: '/admin/subscription' },
   { key: 'doctor',       label: 'مدیریت پزشک',        icon: UserIcon,                 to: '/admin/profile',              roles: ['doctor'] },
   { key: 'appointment',  label: 'مدیریت نوبت دهی',    icon: CalendarDaysIcon,         to: '/admin/appointment-settings', roles: ['doctor'] },
+  { key: 'appointment',  label: 'مدیریت نوبت دهی',    icon: CalendarDaysIcon,         to: '/admin/settings/appointment-settings', roles: ['clinic'] },
   { key: 'clinic-doctors', label: 'پزشکان کلینیک',    icon: BuildingOffice2Icon,      to: '/admin/settings/clinic-doctors', roles: ['clinic'] },
   { key: 'payment',      label: 'مدیریت پرداخت',      icon: BanknotesIcon,            to: '/admin/my-financial' },
   { key: 'secretary',    label: 'مدیریت منشی',        icon: UsersIcon,                to: '/admin/my-secretaries' },