feat: add version label in settings

lib/views/settings_view.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 import 'package:provider/provider.dart';
 
 import '../models/settings.dart';
@@ -15,6 +16,9 @@ class SettingsScreenView extends StatefulWidget {
 }
 
 class _SettingsScreenViewState extends State<SettingsScreenView> {
+  String _appVersion = '';
+  int _versionTaps = 0;
+
   @override
   void initState() {
     super.initState();
@@ -22,6 +26,32 @@ class _SettingsScreenViewState extends State<SettingsScreenView> {
     WidgetsBinding.instance.addPostFrameCallback((_) {
       context.read<SettingsViewModel>().ensureLoaded();
       context.read<PinLockViewModel>().ensureLoaded();
+      _loadVersion();
+    });
+  }
+
+  Future<String> currentVersion() async {
+    final info = await PackageInfo.fromPlatform();
+    debugPrint("Current app version: ${info.version}");
+    return info.version;
+  }
+
+  void _onVersionTap() {
+    _versionTaps++;
+
+    if (_versionTaps >= 7) {
+      _versionTaps = 0;
+      context.push('/dev');
+    }
+  }
+
+  Future<void> _loadVersion() async {
+   final version = await currentVersion();
+
+    if (!mounted) return;
+
+    setState(() {
+      _appVersion = version;
     });
   }
 
@@ -229,6 +259,25 @@ class _SettingsScreenViewState extends State<SettingsScreenView> {
                   ),
                 ],
               ),
+              const SizedBox(height: 40),
+              GestureDetector(
+                onTap: _onVersionTap,
+                child: Center(
+                  child: Text(
+                    'Version $_appVersion',
+                    style: Theme.of(context)
+                        .textTheme
+                        .bodySmall
+                        ?.copyWith(
+                      color: Theme.of(context)
+                          .colorScheme
+                          .onSurface
+                          .withValues(alpha: 0.5),
+                    ),
+                  ),
+                ),
+              ),
+              const SizedBox(height: 20),
             ],
           );
         },