No need update check for web

lib/screens/admin/app_update_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter/foundation.dart';
 
 import 'package:flutter/material.dart';
 import 'package:file_picker/file_picker.dart';
+import 'package:pub_semver/pub_semver.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
@@ -41,16 +42,40 @@ class _AppUpdateScreenState extends ConsumerState<AppUpdateScreen> {
   Future<void> _loadCurrent() async {
     try {
       final client = Supabase.instance.client;
-      final data = await client
-          .from('app_versions')
-          .select()
-          .order('version_code', ascending: false)
-          .limit(1)
-          .maybeSingle();
-      if (data is Map<String, dynamic>) {
-        _versionController.text = data['version_code']?.toString() ?? '';
-        _minController.text = data['min_version_required']?.toString() ?? '';
-        _notesController.text = data['release_notes'] ?? '';
+      final rows = await client.from('app_versions').select().maybeSingle();
+      // when using text versions we can't rely on server-side ordering; instead
+      // parse locally and choose the greatest semantic version.
+      if (rows is List) {
+        final rowList = rows as List?;
+        Version? best;
+        Map<String, dynamic>? bestRow;
+        if (rowList != null) {
+          for (final r in rowList) {
+            if (r is Map<String, dynamic>) {
+              final v = r['version_code']?.toString() ?? '';
+              Version parsed;
+              try {
+                parsed = Version.parse(v);
+              } catch (_) {
+                continue;
+              }
+              if (best == null || parsed > best) {
+                best = parsed;
+                bestRow = r;
+              }
+            }
+          }
+        }
+        if (bestRow != null) {
+          _versionController.text = bestRow['version_code']?.toString() ?? '';
+          _minController.text =
+              bestRow['min_version_required']?.toString() ?? '';
+          _notesController.text = bestRow['release_notes'] ?? '';
+        }
+      } else if (rows is Map<String, dynamic>) {
+        _versionController.text = rows['version_code']?.toString() ?? '';
+        _minController.text = rows['min_version_required']?.toString() ?? '';
+        _notesController.text = rows['release_notes'] ?? '';
       }
     } catch (_) {}
   }
@@ -169,10 +194,11 @@ class _AppUpdateScreenState extends ConsumerState<AppUpdateScreen> {
       } else {
         url = '';
       }
-      if (url.isEmpty)
+      if (url.isEmpty) {
         throw Exception(
           'could not obtain public url, check bucket CORS and policies',
         );
+      }
       _logs.add('Public URL: $url');
       // upsert new version in a single statement
       await client.from('app_versions').upsert({