fix: resolve stale type definitions and cleanup unused variables

apps/admin/src/App.tsx

@@ -49,7 +49,7 @@ function AppShell() {
         }
     }, [user, isSuperAdmin, setSelectedOrgId]);
 
-    const isCrmMode = currentOrg?.mode === 'CRM_MARKETING';
+    const isCrmMode = (currentOrg?.mode as any) === 'CRM_MARKETING';
 
     const allNavItems = [
         { to: '/', label: 'Dashboard', icon: <BarChart2 className="w-4 h-4" /> },

apps/admin/src/pages/ContactsPage.tsx

@@ -17,7 +17,6 @@ export default function ContactsPage() {
     const { selectedOrgId } = useTenant();
     const [contacts, setContacts] = useState<Contact[]>([]);
     const [loading, setLoading] = useState(true);
-    const [isImporting, setIsImporting] = useState(false);
     const [searchQuery, setSearchQuery] = useState('');
     const [showImportModal, setShowImportModal] = useState(false);
     const [uploading, setUploading] = useState(false);