Fix structural issues found in pre-merge review

- Remove broken link to deleted create-your-first-winui3-app.md
  (already redirects to start-here.md which is linked in same sentence)
- Add console, WPF, WinForms framework pages as TOC children under
  Other frameworks
- Link additional-features and other-frameworks landing pages from
  index.md section headings

Co-authored-by: Copilot <[email protected]>

Author: drewbatgit

hub/apps/develop/notifications/app-notifications/app-notifications-quickstart.md

@@ -30,7 +30,7 @@ For complete sample apps that implement app notifications, see the [Windows App
 - Make sure Windows Application Development is selected.
 - Make sure Windows UI Application Development is selected.
 
-For more information about managing workloads in Visual Studio, see [Modify Visual Studio workloads, components, and language packs](/visualstudio/install/modify-visual-studio). For more information about getting started with WinUI, see [Get started with WinUI](../../../get-started/start-here.md). To create a new WinUI project, see [Create a new project that uses the Windows App SDK](../../../winui/winui3/create-your-first-winui3-app.md). To add the Windows App SDK to an existing project, see [Use the Windows App SDK in an existing project](../../../windows-app-sdk/use-windows-app-sdk-in-existing-project.md).
+For more information about managing workloads in Visual Studio, see [Modify Visual Studio workloads, components, and language packs](/visualstudio/install/modify-visual-studio). For more information about getting started with WinUI, see [Get started with WinUI](../../../get-started/start-here.md). To add the Windows App SDK to an existing project, see [Use the Windows App SDK in an existing project](../../../windows-app-sdk/use-windows-app-sdk-in-existing-project.md).
 
 ## Create a new WinUI app project in Visual Studio
 

hub/apps/develop/notifications/app-notifications/index.md

@@ -21,7 +21,7 @@ The [App notifications quickstart](app-notifications-quickstart.md) walks you th
 
 ## Use app notifications with other frameworks
 
-These articles show how to send an app notification and handle activation for other supported frameworks. For notification content, features, and design guidance, see the sections below.
+These articles show how to send an app notification and handle activation for [other supported frameworks](app-notifications-other-frameworks.md). For notification content, features, and design guidance, see the sections below.
 
 - [WPF apps](app-notifications-wpf.md)
 - [WinForms apps](app-notifications-winforms.md)
@@ -37,7 +37,7 @@ These articles cover how to design your notifications and define their content,
 - [App notification content schema](app-notifications-schema.md)
 - [Schedule an app notification](app-notifications-scheduled.md)
 
-## Additional app notifications features
+## [Additional app notifications features](app-notifications-additional-features.md)
 
 These articles cover additional capabilities you can add to your app notifications, such as progress bars, custom audio, and grouping.
 

hub/apps/develop/toc.yml

@@ -550,6 +550,13 @@ items:
                   href: notifications/app-notifications/notification-listener.md
               - name: Other frameworks
                 href: notifications/app-notifications/app-notifications-other-frameworks.md
+                items:
+                - name: WPF apps
+                  href: notifications/app-notifications/app-notifications-wpf.md
+                - name: WinForms apps
+                  href: notifications/app-notifications/app-notifications-winforms.md
+                - name: Console apps
+                  href: notifications/app-notifications/app-notifications-console.md
           - name: Notification delivery methods
             href: notifications/choosing-a-notification-delivery-method.md
             items: