feat(settings): complete remaining settings tabs (account, tags, turns)

Fill the three previously-placeholder settings sections so every menu item
is now a real page inside the settings shell:

- حساب کاربری: new authenticated POST /api/v1/user/change-password
  (verifies current password, ≥8 chars, must differ) + account page with a
  profile summary and change-password form.
- برچسب‌ها: new per-tenant TenantTag domain (entity/repo/controller +
  migration) with tenant-scoped CRUD at /api/v1/tenant-tag(s), plus a tags
  management page (list + color + add/edit/delete).
- مدیریت نوبت دهی: export the existing WeeklyScheduleTab from
  DoctorDetailPage and reuse it in a standalone AppointmentSettingsPage
  (current doctor's uuid + addresses).

Wire all three menu entries to their routes. Backend covered by PHPUnit
(change-password, tenant-tag CRUD + ownership); FE covered by Vitest.
API docs updated (auth.md, tag.md).

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

assets/admin/pages/DoctorDetailPage.tsx

@@ -66,7 +66,7 @@ interface ProvinceOpt  { id: number; uuid: string; name: string; }
 interface CityOpt      { id: number; uuid: string; name: string; }
 interface ImageFileData { fid: number; uuid: string; url: string; filename: string; filemime: string; filesize: number; }
 
-interface AddressData {
+export interface AddressData {
   id: string; uuid: string;
   type: 'personal' | 'clinic';
   clinic_id: string | null;
@@ -1228,7 +1228,7 @@ function SessionEditor({ session, onChange, onRemove, addresses }: {
 
 // ── Weekly Schedule Tab ────────────────────────────────────────────────────
 
-function WeeklyScheduleTab({ doctorUuid, addresses, readOnly = false }: { doctorUuid: string; addresses: AddressData[]; readOnly?: boolean }) {
+export function WeeklyScheduleTab({ doctorUuid, addresses, readOnly = false }: { doctorUuid: string; addresses: AddressData[]; readOnly?: boolean }) {
   const qc = useQueryClient();
   const [scheduleMap,  setScheduleMap]  = useState<NewScheduleMap>(EMPTY_NEW_SCHEDULE);
   const [scheduleUuid, setScheduleUuid] = useState<string | null>(null);