feature: a minimal implementation of the appointment feature done.

frontend/src/components/ui/common/Sidebar.tsx

@@ -13,7 +13,7 @@ import {
   CreditCard,
 } from 'lucide-react';
 import { useAuth } from '@/lib/hooks/useAuth';
-import { canViewTab } from '@/shared/permissions';
+import { canAccessAppointmentsSection, canViewTab } from '@/shared/permissions';
 
 const menu = [
   { name: 'Today', path: '/today', icon: LayoutDashboard, read: 'TAB_TODAY_READ' as const },
@@ -47,7 +47,12 @@ function Sidebar() {
         menu[5],
         menu[6],
       ];
-      return withCounterpartTab.filter((item) => canViewTab(currentOrganization, item.read));
+      return withCounterpartTab.filter((item) => {
+        if (item.path === '/appointments') {
+          return canAccessAppointmentsSection(currentOrganization);
+        }
+        return canViewTab(currentOrganization, item.read);
+      });
     },
     [counterpartLabel, currentOrganization],
   );