added singleUserMode and removed StaffSection from forms

lib/features/operations/ui/operation_form_screen.dart

@@ -187,7 +187,9 @@ class _OperationFormScreenState extends State<OperationFormScreen> {
         return Scaffold(
           appBar: AppBar(
             title: Text(
-              state.operation.id == null ? 'Nuova Pratica' : 'Modifica Pratica',
+              state.operation.id == null
+                  ? 'Nuova Pratica - Operatore: ${state.operation.staffDisplayName}'
+                  : 'Modifica Pratica - Operatore: ${state.operation.staffDisplayName}',
             ),
             // Mettiamo un piccolo indicatore visivo anche nella AppBar se non è OK
             actions:
@@ -570,8 +572,8 @@ class _OperationFormScreenState extends State<OperationFormScreen> {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
-        _buildStaffSection(state),
-        const Divider(height: 50),
+        /* _buildStaffSection(state),
+        const Divider(height: 50), */
         _buildOperationStatusSection(state),
         const Divider(height: 32),
         _buildCustomerSection(state),