feat(settings): render doctor/clinic settings pages inside the settings shell

Wrap the existing settings-area pages — doctor profile (مدیریت پزشک),
insurance pricing (بیمه), payment report (پرداخت), SMS wallet (پیامک‌ها),
secretaries (منشی) and clinic info (مطب) — in SettingsLayout so they appear
under the settings sub-navigation like the Figma design, with the matching
menu item highlighted. Wire the doctor/clinic menu entries to their routes.

The نوبت‌دهی / برچسب‌ها / حساب کاربری entries stay as disabled placeholders
until they have their own pages/designs.

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

assets/admin/pages/MySecretariesPage.tsx

@@ -9,6 +9,7 @@ import {
 import { zodResolver } from "@hookform/resolvers/zod";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { useState } from "react";
+import SettingsLayout from "../components/layout/SettingsLayout";
 import { useForm } from "react-hook-form";
 import { Link } from "react-router-dom";
 import { toast } from "sonner";
@@ -257,7 +258,7 @@ interface ClinicDoctor {
 
 // ── Main component ─────────────────────────────────────────────────────────
 
-export default function MySecretariesPage() {
+function MySecretariesPageContent() {
     const qc = useQueryClient();
     const { doctorUuid, dbUuid, primaryRole } = useAuthStore();
 
@@ -785,3 +786,11 @@ export default function MySecretariesPage() {
         </>
     );
 }
+
+export default function MySecretariesPage() {
+    return (
+        <SettingsLayout active="secretary">
+            <MySecretariesPageContent />
+        </SettingsLayout>
+    );
+}