feat: Add "Check for Updates" menu item

src/EchoHub.Client/AppOrchestrator.cs

@@ -85,6 +85,7 @@ public sealed class AppOrchestrator : IDisposable
         _mainWindow.OnDeleteChannelRequested += HandleDeleteChannelRequested;
         _mainWindow.OnAudioPlayRequested += HandleAudioPlayRequested;
         _mainWindow.OnFileDownloadRequested += HandleFileDownloadRequested;
+        _mainWindow.OnCheckForUpdatesRequested += HandleCheckForUpdatesRequested;
     }
 
     // ── Command Handler Wiring ─────────────────────────────────────────────
@@ -901,6 +902,11 @@ public sealed class AppOrchestrator : IDisposable
         }, "Failed to download file");
     }
 
+    private void HandleCheckForUpdatesRequested()
+    {
+        RunAsync(_updateService.CheckNowAsync, "Failed to check for updates");
+    }
+
     // ── Private Helpers ────────────────────────────────────────────────────
 
     private void FetchAndUpdateOnlineUsers()

src/EchoHub.Client/EchoHub.Client.csproj

@@ -5,7 +5,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="AlwaysUpToDate" Version="2.0.1" />
+    <PackageReference Include="AlwaysUpToDate" Version="2.0.2" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="10.0.3" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.3" />
     <PackageReference Include="NetCoreAudio" Version="2.0.1" />

src/EchoHub.Client/Services/UpdateChecker.cs

@@ -5,6 +5,7 @@ using EchoHub.Client.UI.Dialogs;
 using Serilog;
 
 using Terminal.Gui.App;
+using Terminal.Gui.Views;
 
 namespace EchoHub.Client.Services;
 
@@ -15,6 +16,8 @@ public sealed class UpdateChecker : IDisposable
     private readonly Updater _updater;
     private readonly IApplication _app;
     private UpdateProgressDialog? _progressDialog;
+    private bool _manualCheck;
+
 
     public static string CurrentVersion => typeof(UpdateChecker).Assembly.GetName().Version?.ToString(3) ?? "0.0.0";
 
@@ -37,6 +40,20 @@ public sealed class UpdateChecker : IDisposable
 #endif
     }
 
+
+    public async Task CheckNowAsync()
+    {
+        _manualCheck = true;
+        try
+        {
+            await _updater.CheckForUpdateAsync();
+        }
+        finally
+        {
+            _manualCheck = false;
+        }
+    }
+
     private async void OnUpdateAvailable(string version, string changelogUrl)
     {
         Log.Information("Update available: v{Version}", version);
@@ -83,6 +100,13 @@ public sealed class UpdateChecker : IDisposable
     private void OnNoUpdateAvailable()
     {
         Log.Debug("No update available");
+        if (_manualCheck)
+        {
+            _app.Invoke(() =>
+            {
+                MessageBox.Query(_app, "Check for Updates", $"You are already on the latest version (v{CurrentVersion}).", "OK");
+            });
+        }
     }
 
     private void OnException(Exception exception)

src/EchoHub.Client/UI/MainWindow.cs

@@ -104,6 +104,11 @@ public sealed class MainWindow : Runnable
     /// </summary>
     public event Action<string>? OnThemeSelected;
 
+    /// <summary>
+    /// Fired when the user requests to check for updates.
+    /// </summary>
+    public event Action? OnCheckForUpdatesRequested;
+
     /// <summary>
     /// Fired when the user requests to view saved servers.
     /// </summary>
@@ -322,7 +327,8 @@ public sealed class MainWindow : Runnable
         [
             new MenuBarItem("_File",
             [
-                new MenuItem("_Quit", "Quit EchoHub", () => _app.RequestStop(), Key.Empty)
+                new MenuItem("_Quit", "Quit EchoHub", () => _app.RequestStop(), Key.Empty),
+                new MenuItem($"_Check for Updates", "Check for new version", () => OnCheckForUpdatesRequested?.Invoke(), Key.Empty)
             ]),
             new MenuBarItem("_Server", new View[]
             {