feat: ensure نوبت‌ها menu remains always expanded in the sidebar

assets/admin/components/layout/Sidebar.tsx

@@ -509,7 +509,12 @@ function NavItem({
     const { icon: Icon, label, to, children } = item;
     const location = useLocation();
     const childActive = !!children?.some((c) => location.pathname === c.to);
-    const [open, setOpen] = useState(childActive);
+    // منوی «نوبت‌ها» همیشه باز می‌ماند و جمع نمی‌شود.
+    const alwaysOpen = !!children?.some((c) =>
+        c.to.startsWith("/admin/appointments"),
+    );
+    const [openState, setOpen] = useState(childActive);
+    const open = alwaysOpen || openState;
 
     // منوی ساده — رفتار قبلی بدون تغییر.
     if (!children || children.length === 0) {
@@ -553,7 +558,7 @@ function NavItem({
                 className={`nav-item${childActive ? " active" : ""}`}
                 aria-expanded={open}
                 title={!sidebarOpen ? label : undefined}
-                onClick={() => setOpen((o) => !o)}
+                onClick={() => !alwaysOpen && setOpen((o) => !o)}
                 style={{
                     width: "100%",
                     background: "none",