small updates

Author: cinnamon-msft

hub/powertoys/command-palette/creating-an-extension.md

@@ -1,10 +1,56 @@
 ---
 title: Command Palette Extensibility
 description: The Command Palette provides a full extension model, allowing developers to create their own experiences for the palette. Find info about how to create an extension and publish it along with samples.
-ms.date: 2/3/2025
+ms.date: 2/28/2025
 ms.topic: concept-article
 no-loc: [PowerToys, Windows, Insider]
 # Customer intent: As a Windows developer, I want to learn how to develop an extension for the Command Palette.
 ---
 
-# Extensibility overview
+# Extensibility overview
+
+## Registering your extension
+
+Extensions can register themselves with the Command Palette using their `.appxmanifest`. As an example:
+
+```XML
+<Extensions>
+    <com:Extension Category="windows.comServer">
+        <com:ComServer>
+            <com:ExeServer Executable="ExtensionName.exe" Arguments="-RegisterProcessAsComServer" DisplayName="Sample Extension">
+                <com:Class Id="<Extension CLSID Here>" DisplayName="Sample Extension" />
+            </com:ExeServer>
+        </com:ComServer>
+    </com:Extension>
+    <uap3:Extension Category="windows.appExtension">
+        <uap3:AppExtension Name="com.microsoft.commandpalette"
+                           Id="YourApplicationUniqueId"
+                           PublicFolder="Public"
+                           DisplayName="Sample Extension"
+                           Description="Sample Extension for Run">
+            <uap3:Properties>
+                <CmdPalProvider>
+                    <Activation>
+                        <CreateInstance ClassId="<Extension CLSID Here>" />
+                    </Activation>
+                    <SupportedInterfaces>
+                        <Commands />
+                    </SupportedInterfaces>
+                </CmdPalProvider>
+            </uap3:Properties>
+        </uap3:AppExtension>
+    </uap3:Extension>
+</Extensions>
+```
+
+Notable elements:
+
+- The application must specify a `Extensions.comExtension.ComServer` to host their COM class. This allows for the OS to register that GUID as a COM class we can instantiate.
+
+    - Make sure that this CLSID is unique, and matches the one in your application
+
+- The application must specify a `Extensions.uap3Extension.AppExtension` with the Name set to `com.microsoft.commandpalette`. This is the unique identifier which DevPal can use to find it's extensions.
+
+- In the `Properties` of your `AppExtension`, you must specify a `CmdPalProvider` element. This is where you specify the CLSID of the COM class that DevPal will instantiate to interact with your extension. Also, you specify which interfaces you support.
+
+Currently, only `Commands` is supported. If we need to add more in the future, we can add them to the `SupportedInterfaces` element.

hub/powertoys/command-palette/microsoft-commandpalette-extensions-toolkit/command.md

@@ -1,7 +1,7 @@
 ---
 title: Command Class
 description: 
-ms.date: 2/10/2025
+ms.date: 2/27/2025
 ms.topic: reference
 no-loc: [PowerToys, Windows, Insider]
 ---
@@ -16,6 +16,8 @@ Inherits [BaseObservable](baseobservable.md)
 
 Implements [ICommand](../microsoft-commandpalette-extensions/icommand.md)
 
+`Command`s are the primary unit of functionality in the Command Palette SDK. They represent "a thing that a user can do". These can be something simple like open a URL in a web browser. Or they can be more complex, with nested commands, custom arguments, and more.
+
 ## Properties
 
 | Property | Type | Description |

hub/powertoys/command-palette/microsoft-commandpalette-extensions-toolkit/page.md

@@ -16,6 +16,8 @@ Inherits [Command](command.md)
 
 Implements [IPage](../microsoft-commandpalette-extensions/ipage.md)
 
+Represent additional "nested" pages within the Command Palette.
+
 ## Properties
 
 | Property | Type | Description |

hub/powertoys/command-palette/publish-extension.md

@@ -1,10 +1,14 @@
 ---
 title: Command Palette Extension Publishing
 description: The Command Palette provides a full extension model, allowing developers to create their own experiences for the palette. Find info about how to publish an extension.
-ms.date: 2/3/2025
+ms.date: 2/28/2025
 ms.topic: concept-article
 no-loc: [PowerToys, Windows, Insider]
 # Customer intent: As a Windows developer, I want to learn how to publish an extension for the Command Palette.
 ---
 
-# Publishing your extension
+# Publishing your extension
+
+## Microsoft Store
+
+## WinGet