feat: add rows count (broken), fix: bug with low stock items

lib/views/settings_view.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
@@ -22,7 +23,7 @@ class SettingsScreenView extends StatefulWidget {
 
 class _SettingsScreenViewState extends State<SettingsScreenView> {
   String _appVersion = '';
-  int _versionTaps = 0;
+  Timer? _versionHoldTimer;
 
   @override
   void initState() {
@@ -41,13 +42,23 @@ class _SettingsScreenViewState extends State<SettingsScreenView> {
     return info.version;
   }
 
-  void _onVersionTap() {
-    _versionTaps++;
+  void _startVersionHold() {
+    _versionHoldTimer?.cancel();
+    _versionHoldTimer = Timer(const Duration(seconds: 3), () {
+      _versionHoldTimer = null;
+      if (mounted) context.push('/dev');
+    });
+  }
 
-    if (_versionTaps >= 7) {
-      _versionTaps = 0;
-      context.push('/dev');
-    }
+  void _cancelVersionHold() {
+    _versionHoldTimer?.cancel();
+    _versionHoldTimer = null;
+  }
+
+  @override
+  void dispose() {
+    _cancelVersionHold();
+    super.dispose();
   }
 
   Future<void> _loadVersion() async {
@@ -277,6 +288,35 @@ class _SettingsScreenViewState extends State<SettingsScreenView> {
                       }
                     },
                   ),
+                  _SettingsTile(
+                    icon: Icons.grid_view_rounded,
+                    title: l10n.productGridRows,
+                    subtitle: l10n.rowsCount(settings.barGridRows),
+                    onTap: () async {
+                      final selected = await showModalBottomSheet<int>(
+                        context: context,
+                        builder: (context) => SafeArea(
+                          child: Column(
+                            mainAxisSize: MainAxisSize.min,
+                            children: [
+                              for (final rows in [2, 3, 4, 5, 6])
+                                RadioListTile<int>(
+                                  value: rows,
+                                  groupValue: settings.barGridRows,
+                                  title: Text(l10n.rowsCount(rows)),
+                                  onChanged: (value) =>
+                                      Navigator.pop(context, value),
+                                ),
+                            ],
+                          ),
+                        ),
+                      );
+
+                      if (selected != null) {
+                        await settingsViewModel.updateBarGridRows(selected);
+                      }
+                    },
+                  ),
                   _SettingsTile(
                     icon: Icons.brightness_6_rounded,
                     title: l10n.theme,
@@ -334,7 +374,9 @@ class _SettingsScreenViewState extends State<SettingsScreenView> {
                 ),
               const SizedBox(height: 40),
               GestureDetector(
-                onTap: _onVersionTap,
+                onTapDown: (_) => _startVersionHold(),
+                onTapUp: (_) => _cancelVersionHold(),
+                onTapCancel: _cancelVersionHold,
                 child: Center(
                   child: Text(
                     l10n.version(_appVersion),