CmdPal: Hide RDC fallback item by default

src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.RemoteDesktop.UnitTests/FallbackRemoteDesktopItemTests.cs

@@ -73,13 +73,11 @@ public void UpdateQuery_WhenQueryIsWhitespace_ResetsCommand()
         fallback.UpdateQuery("   ");
 
         // Assert
-        Assert.AreEqual(Resources.remotedesktop_command_open, fallback.Title);
+        Assert.AreEqual(string.Empty, fallback.Title);
         Assert.AreEqual(string.Empty, fallback.Subtitle);
 
         var command = fallback.Command as OpenRemoteDesktopCommand;
-        Assert.IsNotNull(command);
-        Assert.AreEqual(Resources.remotedesktop_command_open, command.Name);
-        Assert.AreEqual(string.Empty, GetCommandHost(command));
+        Assert.IsNull(command);
     }
 
     [TestMethod]
@@ -93,13 +91,11 @@ public void UpdateQuery_WhenQueryIsInvalidHost_ClearsCommand()
         fallback.UpdateQuery("not a valid host");
 
         // Assert
-        Assert.AreEqual(Resources.remotedesktop_command_open, fallback.Title);
+        Assert.AreEqual(string.Empty, fallback.Title);
         Assert.AreEqual(string.Empty, fallback.Subtitle);
 
         var command = fallback.Command as OpenRemoteDesktopCommand;
-        Assert.IsNotNull(command);
-        Assert.AreEqual(Resources.remotedesktop_command_open, command.Name);
-        Assert.AreEqual(string.Empty, GetCommandHost(command));
+        Assert.IsNull(command);
     }
 
     private static string GetCommandHost(OpenRemoteDesktopCommand command)

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.RemoteDesktop/Commands/FallbackRemoteDesktopItem.cs

@@ -23,13 +23,16 @@ internal sealed partial class FallbackRemoteDesktopItem : FallbackCommandItem
         ];
 
     private static readonly CompositeFormat RemoteDesktopOpenHostFormat = CompositeFormat.Parse(Resources.remotedesktop_open_host);
+
     private readonly IRdpConnectionsManager _rdpConnectionsManager;
+    private readonly NoOpCommand _emptyCommand = new NoOpCommand();
 
     public FallbackRemoteDesktopItem(IRdpConnectionsManager rdpConnectionsManager)
-    : base(new OpenRemoteDesktopCommand(string.Empty), Resources.remotedesktop_title)
+    : base(Resources.remotedesktop_title)
     {
         _rdpConnectionsManager = rdpConnectionsManager;
 
+        Command = _emptyCommand;
         Title = string.Empty;
         Subtitle = string.Empty;
         Icon = Icons.RDPIcon;
@@ -41,7 +44,7 @@ public override void UpdateQuery(string query)
         {
             Title = string.Empty;
             Subtitle = string.Empty;
-            Command = new OpenRemoteDesktopCommand(string.Empty);
+            Command = _emptyCommand;
             return;
         }
 
@@ -68,7 +71,7 @@ public override void UpdateQuery(string query)
         {
             Title = string.Empty;
             Subtitle = string.Empty;
-            Command = new OpenRemoteDesktopCommand(string.Empty);
+            Command = _emptyCommand;
         }
     }
 }

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.RemoteDesktop/Commands/OpenRemoteDesktopCommand.cs

@@ -40,7 +40,7 @@ public ICommandResult Invoke(object sender)
     {
         using var process = new Process();
         process.StartInfo.UseShellExecute = false;
-        process.StartInfo.WorkingDirectory = Environment.SpecialFolder.MyDocuments.ToString();
+        process.StartInfo.WorkingDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
         process.StartInfo.FileName = "mstsc";
 
         if (!string.IsNullOrWhiteSpace(_rdpHost))

src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions.Toolkit/FallbackCommandItem.cs

@@ -6,7 +6,12 @@ namespace Microsoft.CommandPalette.Extensions.Toolkit;
 
 public partial class FallbackCommandItem : CommandItem, IFallbackCommandItem, IFallbackHandler
 {
-    private IFallbackHandler? _fallbackHandler;
+    private readonly IFallbackHandler? _fallbackHandler;
+
+    public FallbackCommandItem(string displayTitle)
+    {
+        DisplayTitle = displayTitle;
+    }
 
     public FallbackCommandItem(ICommand command, string displayTitle)
         : base(command)