fix(settings): every settings page renders the settings shell

Resources, branches, price lists, holidays and the new categories page sat
in the settings menu but rendered bare, so clicking one made the settings
sidebar disappear — the subscription page was the only one that kept it.

Eleven pages now wrap in SettingsLayout with the key of the menu entry they
belong to, and the four resource pages (list, types, skills, pools) share
one menu entry plus a sub-nav between them, rather than four entries that
would make the menu a third longer without making anything clearer.

.seg accepts `a` as well as `button`, and treats `active` as an alias of
`on`. Both were needed: cross-page tabs must be real links, and the pages
already using `active` (service detail, clinic appointment settings) had no
visible highlight at all.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

assets/admin/pages/BranchRoomsPage.tsx

@@ -10,6 +10,7 @@ import { useUrlState } from '../hooks/useUrlState';
 import { usePermissions } from '../hooks/usePermissions';
 import { useBranchRooms, useBranches } from '../hooks/useBranches';
 import type { Room, RoomPayload } from '../types';
+import SettingsLayout from '../components/layout/SettingsLayout';
 
 /** اتاق‌های یک شعبه. ظرفیت = چند بیمار هم‌زمان، نه چند اتاق. */
 export default function BranchRoomsPage() {
@@ -49,63 +50,65 @@ export default function BranchRoomsPage() {
   };
 
   return (
-    <div className="fade-in">
-      <PageHeader
-        title={`اتاق‌های ${branch?.name ?? 'شعبه'}`}
-        description="ظرفیت هر اتاق تعداد بیمارِ هم‌زمان است — اتاق تزریق سه‌تخته یک اتاق با ظرفیت ۳ است، نه سه اتاق."
-        backTo="/admin/branches"
-        breadcrumbs={[{ label: 'شعبه‌ها', to: '/admin/branches' }, { label: 'اتاق‌ها' }]}
-        action={
-          canUpdate ? (
-            <button type="button" className="btn primary" onClick={() => setEditing({ open: true, room: null })}>
-              <PlusIcon style={{ width: 16 }} /> افزودن اتاق
-            </button>
-          ) : undefined
-        }
-      />
+    <SettingsLayout active="branches">
+      <div className="fade-in">
+        <PageHeader
+          title={`اتاق‌های ${branch?.name ?? 'شعبه'}`}
+          description="ظرفیت هر اتاق تعداد بیمارِ هم‌زمان است — اتاق تزریق سه‌تخته یک اتاق با ظرفیت ۳ است، نه سه اتاق."
+          backTo="/admin/branches"
+          breadcrumbs={[{ label: 'شعبه‌ها', to: '/admin/branches' }, { label: 'اتاق‌ها' }]}
+          action={
+            canUpdate ? (
+              <button type="button" className="btn primary" onClick={() => setEditing({ open: true, room: null })}>
+                <PlusIcon style={{ width: 16 }} /> افزودن اتاق
+              </button>
+            ) : undefined
+          }
+        />
 
-      <DataTable
-        columns={columns}
-        data={rows}
-        loading={loading}
-        searchValue={urlState.search}
-        onSearchChange={(v) => setUrlState({ search: v })}
-        searchPlaceholder="جستجو در اتاق‌ها..."
-        emptyMessage="هنوز اتاقی برای این شعبه ثبت نشده است"
-        actions={
-          canUpdate
-            ? (r) => (
-                <div style={{ display: 'flex', gap: 6 }}>
-                  <button type="button" className="btn secondary sm" onClick={() => setEditing({ open: true, room: r })}>
-                    ویرایش
-                  </button>
-                  <button type="button" className="btn secondary sm" onClick={() => setToDelete(r)}>
-                    حذف
-                  </button>
-                </div>
-              )
-            : undefined
-        }
-      />
+        <DataTable
+          columns={columns}
+          data={rows}
+          loading={loading}
+          searchValue={urlState.search}
+          onSearchChange={(v) => setUrlState({ search: v })}
+          searchPlaceholder="جستجو در اتاق‌ها..."
+          emptyMessage="هنوز اتاقی برای این شعبه ثبت نشده است"
+          actions={
+            canUpdate
+              ? (r) => (
+                  <div style={{ display: 'flex', gap: 6 }}>
+                    <button type="button" className="btn secondary sm" onClick={() => setEditing({ open: true, room: r })}>
+                      ویرایش
+                    </button>
+                    <button type="button" className="btn secondary sm" onClick={() => setToDelete(r)}>
+                      حذف
+                    </button>
+                  </div>
+                )
+              : undefined
+          }
+        />
 
-      <RoomModal
-        open={editing.open}
-        room={editing.room}
-        saving={create.isPending || update.isPending}
-        onClose={() => setEditing({ open: false, room: null })}
-        onSave={save}
-      />
+        <RoomModal
+          open={editing.open}
+          room={editing.room}
+          saving={create.isPending || update.isPending}
+          onClose={() => setEditing({ open: false, room: null })}
+          onSave={save}
+        />
 
-      <ConfirmDialog
-        open={!!toDelete}
-        title="حذف اتاق"
-        message={`آیا از حذف «${toDelete?.name}» مطمئن هستید؟`}
-        confirmLabel="حذف"
-        loading={remove.isPending}
-        onConfirm={() => toDelete && remove.mutate(toDelete.uuid, { onSuccess: () => setToDelete(null) })}
-        onCancel={() => setToDelete(null)}
-      />
-    </div>
+        <ConfirmDialog
+          open={!!toDelete}
+          title="حذف اتاق"
+          message={`آیا از حذف «${toDelete?.name}» مطمئن هستید؟`}
+          confirmLabel="حذف"
+          loading={remove.isPending}
+          onConfirm={() => toDelete && remove.mutate(toDelete.uuid, { onSuccess: () => setToDelete(null) })}
+          onCancel={() => setToDelete(null)}
+        />
+      </div>
+    </SettingsLayout>
   );
 }