docs: align Copilot SDK branding

.github/plugin/marketplace.json

@@ -916,7 +916,7 @@
     {
       "name": "copilot-sdk",
       "source": "plugins/copilot-sdk",
-      "description": "Build applications with the GitHub Copilot SDK across multiple programming languages. Includes comprehensive instructions for C#, Go, Node.js/TypeScript, and Python to help you create AI-powered applications.",
+      "description": "Build applications with the Microsoft Copilot SDK, transitioning from GitHub Copilot SDK, across multiple programming languages. Includes instructions for C#, Go, Node.js/TypeScript, and Python.",
       "version": "1.0.0"
     },
     {

cookbook/README.md

@@ -6,9 +6,9 @@ A collection of practical recipes and examples for working with GitHub Copilot t
 
 The cookbook is organized by tool or product, with recipes collected by language where applicable:
 
-### GitHub Copilot SDK
+### Microsoft Copilot SDK
 
-Ready-to-use recipes for building with the GitHub Copilot SDK across multiple languages.
+Ready-to-use recipes for building with the Microsoft Copilot SDK across multiple languages. The SDK is transitioning from its GitHub name in phases; no immediate package or API changes are required. The recipes retain currently published package names and imports.
 
 - **[Copilot SDK Cookbook](copilot-sdk/)** - Recipes for .NET, Go, Java, Node.js, and Python
   - Error handling, session management, file operations, and more
@@ -40,7 +40,8 @@ Have a recipe to share? We'd love to include it! See [CONTRIBUTING.md](../CONTRI
 ### Official Documentation
 
 - [GitHub Copilot Documentation](https://docs.github.com/copilot)
-- [GitHub Copilot SDK](https://github.com/github/copilot-sdk)
+- [Microsoft Copilot SDK (transition announcement)](https://github.blog/changelog/2026-10-28-github-copilot-sdk-is-becoming-microsoft-copilot-sdk/)
+- [SDK repository](https://github.com/github/copilot-sdk)
 
 ### External Cookbooks
 

cookbook/cookbook.yml

@@ -4,8 +4,8 @@
 
 cookbooks:
   - id: copilot-sdk
-    name: GitHub Copilot SDK
-    description: Ready-to-use recipes for building with the GitHub Copilot SDK across multiple languages
+    name: Microsoft Copilot SDK
+    description: Ready-to-use recipes for building with the Microsoft Copilot SDK across multiple languages. Package names and examples reflect the phased transition from GitHub Copilot SDK.
     path: cookbook/copilot-sdk
     featured: true
     languages:
@@ -92,7 +92,7 @@ cookbooks:
           - community
       - id: copilot-sdk-web-app
         name: Copilot SDK Web App
-        description: A full-stack chat application built with the GitHub Copilot SDK, .NET Aspire, and React with GitHub OAuth, session history, and model selection
+        description: A full-stack chat application built with the Microsoft Copilot SDK (currently published as GitHub Copilot SDK), .NET Aspire, and React with GitHub OAuth, session history, and model selection
         external: true
         url: https://github.com/aaronpowell/copilot-sdk-web-app
         author:

cookbook/copilot-sdk/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook
+# Microsoft Copilot SDK Cookbook
 
-This cookbook collects small, focused recipes showing how to accomplish common tasks with the [GitHub Copilot SDK](https://github.com/github/copilot-sdk) across languages. Each recipe is intentionally short and practical, with copy‑pasteable snippets and pointers to fuller examples and tests.
+This cookbook collects small, focused recipes showing how to accomplish common tasks with the Microsoft Copilot SDK across languages. The SDK is transitioning from the GitHub Copilot SDK in phases, and no immediate changes are required. Package names, namespaces, and repository links in these recipes remain as currently published; see the [official transition announcement](https://github.blog/changelog/2026-10-28-github-copilot-sdk-is-becoming-microsoft-copilot-sdk/). Each recipe is intentionally short and practical, with copy‑pasteable snippets and pointers to fuller examples and tests.
 
 ## Recipes by Language
 

cookbook/copilot-sdk/dotnet/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook — .NET (C#)
+# Microsoft Copilot SDK Cookbook — .NET (C#)
 
-This folder hosts short, practical recipes for using the GitHub Copilot SDK with .NET. Each recipe is concise, copy‑pasteable, and points to fuller examples and tests.
+This folder hosts short, practical recipes for using the Microsoft Copilot SDK with .NET. Package names and code samples reflect the current phased transition from GitHub Copilot SDK.
 
 ## Recipes
 

cookbook/copilot-sdk/dotnet/recipe/README.md

@@ -5,7 +5,7 @@ This folder contains standalone, executable C# examples for each cookbook recipe
 ## Prerequisites
 
 - .NET 10.0 or later
-- GitHub Copilot SDK package (referenced automatically)
+- Microsoft Copilot SDK NuGet package, currently published as `GitHub.Copilot.SDK` (referenced automatically)
 
 ## Running Examples
 
@@ -185,5 +185,5 @@ These examples use .NET's file-based app feature, which allows single-file C# pr
 ## Learning Resources
 
 - [.NET File-Based Apps Documentation](https://learn.microsoft.com/en-us/dotnet/core/sdk/file-based-apps)
-- [GitHub Copilot SDK Documentation](https://github.com/github/copilot-sdk/blob/main/dotnet/README.md)
+- [Microsoft Copilot SDK for .NET documentation](https://github.com/github/copilot-sdk/blob/main/dotnet/README.md)
 - [Parent Cookbook](../README.md)

cookbook/copilot-sdk/go/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook — Go
+# Microsoft Copilot SDK Cookbook — Go
 
-This folder hosts short, practical recipes for using the GitHub Copilot SDK with Go. Each recipe is concise, copy‑pasteable, and points to fuller examples and tests.
+This folder hosts short, practical recipes for using the Microsoft Copilot SDK with Go. Package names and code samples reflect the current phased transition from GitHub Copilot SDK.
 
 ## Recipes
 

cookbook/copilot-sdk/go/recipe/README.md

@@ -5,7 +5,7 @@ This folder contains standalone, executable Go examples for each cookbook recipe
 ## Prerequisites
 
 - Go 1.21 or later
-- GitHub Copilot SDK for Go
+- Microsoft Copilot SDK for Go (currently published under the existing GitHub SDK repository)
 
 ```bash
 go get github.com/github/copilot-sdk/go
@@ -57,5 +57,5 @@ These examples follow Go conventions:
 ## Learning Resources
 
 - [Go Documentation](https://go.dev/doc/)
-- [GitHub Copilot SDK for Go](https://github.com/github/copilot-sdk/blob/main/go/README.md)
+- [Microsoft Copilot SDK for Go documentation](https://github.com/github/copilot-sdk/blob/main/go/README.md)
 - [Parent Cookbook](../README.md)

cookbook/copilot-sdk/java/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook — Java
+# Microsoft Copilot SDK Cookbook — Java
 
-This folder hosts short, practical recipes for using the [GitHub Copilot SDK for Java](https://github.com/github/copilot-sdk/tree/main/java). Each recipe is concise, copy‑pasteable, and points to fuller examples and tests. All examples can be run directly with [JBang](https://www.jbang.dev/).
+This folder hosts short, practical recipes for using the [Microsoft Copilot SDK for Java](https://github.com/github/copilot-sdk/tree/main/java). The SDK is transitioning from its GitHub name in phases, so package names and code samples reflect the current published identifiers. Each recipe is concise, copy‑pasteable, and points to fuller examples and tests. All examples can be run directly with [JBang](https://www.jbang.dev/).
 
 Examples target the official SDK 1.0.21 and Java 17 or later. SDK 1.x uses
 `com.github.copilot` for clients, `com.github.copilot.generated` for events, and

cookbook/copilot-sdk/java/recipe/README.md

@@ -6,7 +6,7 @@ This folder contains standalone, executable Java examples for each cookbook reci
 
 - Java 17 or later
 - GitHub Copilot authentication configured before running model requests
-- Official GitHub Copilot SDK 1.0.21 (resolved automatically from `//DEPS`)
+- Microsoft Copilot SDK for Java 1.0.21 (resolved automatically from `//DEPS`; source remains in the existing GitHub SDK repository)
 - JBang installed:
 
 ```bash
@@ -238,6 +238,6 @@ JBang lets you run Java files as scripts — no `pom.xml`, no `build.gradle`, no
 ## Learning Resources
 
 - [JBang Documentation](https://www.jbang.dev/documentation/guide/latest/)
-- [GitHub Copilot SDK for Java](https://github.com/github/copilot-sdk/tree/main/java)
+- [Microsoft Copilot SDK for Java documentation](https://github.com/github/copilot-sdk/tree/main/java)
 - [GitHub Copilot CLI](https://github.com/features/copilot/cli)
 - [Parent Cookbook](../README.md)

cookbook/copilot-sdk/nodejs/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook — Node.js / TypeScript
+# Microsoft Copilot SDK Cookbook — Node.js / TypeScript
 
-This folder hosts short, practical recipes for using the GitHub Copilot SDK with Node.js/TypeScript. Each recipe is concise, copy‑pasteable, and points to fuller examples and tests.
+This folder hosts short, practical recipes for using the Microsoft Copilot SDK with Node.js/TypeScript. Package names and code samples reflect the current phased transition from GitHub Copilot SDK.
 
 ## Recipes
 

cookbook/copilot-sdk/nodejs/recipe/README.md

@@ -80,5 +80,5 @@ These examples use modern TypeScript/Node.js features:
 
 - [TypeScript Documentation](https://www.typescriptlang.org/docs/)
 - [Node.js Documentation](https://nodejs.org/docs/latest/api/)
-- [GitHub Copilot SDK for Node.js](https://github.com/github/copilot-sdk/blob/main/nodejs/README.md)
+- [Microsoft Copilot SDK for Node.js documentation](https://github.com/github/copilot-sdk/blob/main/nodejs/README.md)
 - [Parent Cookbook](../README.md)

cookbook/copilot-sdk/nodejs/recipe/package.json

@@ -2,7 +2,7 @@
   "name": "copilot-sdk-cookbook-recipes",
   "version": "1.0.0",
   "type": "module",
-  "description": "Runnable examples for GitHub Copilot SDK cookbook recipes",
+  "description": "Runnable examples for Microsoft Copilot SDK cookbook recipes using currently published package identifiers",
   "scripts": {
     "error-handling": "tsx error-handling.ts",
     "multiple-sessions": "tsx multiple-sessions.ts",

cookbook/copilot-sdk/python/README.md

@@ -1,6 +1,6 @@
-# GitHub Copilot SDK Cookbook — Python
+# Microsoft Copilot SDK Cookbook — Python
 
-This folder hosts short, practical recipes for using the GitHub Copilot SDK with Python. Each recipe is concise, copy‑pasteable, and points to fuller examples and tests.
+This folder hosts short, practical recipes for using the Microsoft Copilot SDK with Python. Package names and code samples reflect the current phased transition from GitHub Copilot SDK.
 
 ## Recipes
 

cookbook/copilot-sdk/python/recipe/README.md

@@ -90,5 +90,5 @@ pip install -r requirements.txt
 
 - [Python Documentation](https://docs.python.org/3/)
 - [PEP 8 Style Guide](https://pep8.org/)
-- [GitHub Copilot SDK for Python](https://github.com/github/copilot-sdk/blob/main/python/README.md)
+- [Microsoft Copilot SDK for Python documentation](https://github.com/github/copilot-sdk/blob/main/python/README.md)
 - [Parent Cookbook](../README.md)