feat: customize search placeholder based on user role

- Agents see 'Buscar atendimentos...'

- Super admins see 'Buscar membros, equipes, atendimentos ou organizações...'

- Admin and managers see 'Buscar membros, equipes ou atendimentos...'

components/Layout.tsx

@@ -53,6 +53,12 @@ export const Layout: React.FC<{ children: React.ReactNode }> = ({ children }) =>
     return () => clearTimeout(delayDebounceFn);
   }, [searchQuery]);
 
+  const getSearchPlaceholder = () => {
+    if (currentUser?.role === 'super_admin') return 'Buscar membros, equipes, atendimentos ou organizações...';
+    if (currentUser?.role === 'agent') return 'Buscar atendimentos...';
+    return 'Buscar membros, equipes ou atendimentos...';
+  };
+
   useEffect(() => {
     const fetchCurrentUser = async () => {
       const storedUserId = localStorage.getItem('ctms_user_id');
@@ -207,7 +213,7 @@ export const Layout: React.FC<{ children: React.ReactNode }> = ({ children }) =>
               {isSearching ? <Loader2 size={18} className="text-brand-yellow animate-spin" /> : <Search size={18} className="text-zinc-400 dark:text-dark-muted" />}
               <input 
                 type="text" 
-                placeholder="Buscar membros, equipes ou atendimentos..." 
+                placeholder={getSearchPlaceholder()} 
                 value={searchQuery}
                 onChange={(e) => setSearchQuery(e.target.value)}
                 onFocus={() => searchQuery.length >= 2 && setShowSearchResults(true)}