[develop] Fix: security auth flows, certificate handling, and AI setup guidance

hub/apps/develop/security/share-certificates.md

@@ -65,6 +65,8 @@ Apps can authenticate to a web service using a certificate, and multiple apps ca
            {
                return true;
            }
+
+           return false;
        }
    }
    ```

hub/apps/develop/security/smart-cards.md

@@ -240,7 +240,6 @@ bool result = await provisioning.RequestPinResetAsync(
             deferral.Complete();
         }
     });
-}
 ```
 
 ## Remove a smart card or virtual smart card

hub/apps/develop/security/use-cases.md

@@ -148,7 +148,7 @@ navigator.credentials.create({
       // User-friendly name of your service.
       name: "Passkeys Developer",
       // Relying party (RP) identifier (hostname/FQDN).
-      id: passkeys.contoso"
+      id: "passkeys.contoso"
     },
 
     user: {
@@ -242,10 +242,10 @@ navigator.credentials.get({
     rpId: ...,
      allowCredentials: [{
       type: "public-key",      
-      id: new UInt8Array([21, 31, 56, ...]).buffer,
+      id: new Uint8Array([21, 31, 56, ...]).buffer,
     }, {
       type: "public-key",
-      id: new UInt8Array([21, 31, 56, ...]).buffer,
+      id: new Uint8Array([21, 31, 56, ...]).buffer,
     }, {
       ...
     }],

hub/apps/develop/security/windows-hello-auth-service.md

@@ -237,7 +237,7 @@ In this exercise, you start with the Windows Hello application built in the firs
         // If the UserAccountList does not contain the sampleUser Initialize the sample users
         // This is only needed as it in a Hand on Lab to demonstrate a user migrating
         // In the real world user accounts would just be in a database
-        if (!_mockDatabaseUserAccountsList.Any(f = > f.Username.Equals("sampleUsername")))
+        if (!_mockDatabaseUserAccountsList.Any(f => f.Username.Equals("sampleUsername")))
                 {
             //If the list is empty InitializeSampleUserAccountsAsync and return the list
             await InitializeSampleUserAccountsAsync();

hub/apps/develop/security/windows-hello-login.md

@@ -494,7 +494,7 @@ In this exercise you will learn how to check if Windows Hello is setup on the ma
 - Now that you have created the **CreateWindowsHelloKeyAsync** method, return to the Login.xaml.cs file and uncomment the code inside the SignInWindowsHelloAsync method.
 
     ```cs
-    private async void SignInWindowsHelloAsync()
+    private async Task SignInWindowsHelloAsync()
     {
         if (AccountHelper.ValidateAccountCredentials(UsernameTextBox.Text))
         {
@@ -631,7 +631,7 @@ In this exercise, you will continue from the previous exercise. When a user succ
 - In the **SignInWindowsHelloAsync** method (in Login.xaml.cs), once the **CreateWindowsHelloKeyAsync** is successful, it should navigate to the **Welcome** page and pass the **Account**.
 
     ```cs
-    private async void SignInWindowsHelloAsync()
+    private async Task SignInWindowsHelloAsync()
     {
         if (AccountHelper.ValidateAccountCredentials(UsernameTextBox.Text))
         {

hub/apps/how-tos/ai-setup.md

@@ -57,7 +57,7 @@ Run this command in your project root (or any directory where you want Copilot t
 copilot plugin install winui3-development@awesome-copilot
 ```
 
-This copies agents, skills, and custom instructions into your project's `.github/` directory. Copilot automatically picks them up the next time you open the project.
+This copies agents, skills, and custom instructions into your project's `.github/` directory. Copilot automatically picks them up the next time you open the project. After installation, run `copilot plugin list` and confirm that `winui3-development@awesome-copilot` appears in the installed plugins list.
 
 > [!TIP]
 > You can also browse and install Copilot plugins directly from VS Code using the [Awesome Copilot extension](https://marketplace.visualstudio.com/items?itemName=TimHeuer.awesome-copilot).