Add content on commit generation in Desktop (#55257)

Co-authored-by: Melissa Xie <mxie@users.noreply.github.com>
Co-authored-by: Joe Clark <31087804+jc-clark@users.noreply.github.com>
Co-authored-by: Steve Ward <steveward@github.com>

Author: 4 people

assets/images/help/desktop/create-commit-details.png

@@ -62,6 +62,10 @@ For more information about {% data variables.product.prodname_copilot_edits_shor
 
 Enhance {% data variables.product.prodname_copilot_chat_short %} responses by providing contextual details on your preferences, tools, and requirements. For more information, see [AUTOTITLE](/copilot/customizing-copilot/about-customizing-github-copilot-chat-responses).
 
+### {% data variables.product.prodname_copilot_desktop_short %} ({% data variables.release-phases.public_preview %})
+
+Automatically generate commit messages and descriptions with {% data variables.product.prodname_copilot_desktop_short %} based on the changes you make to your project.
+
 ### {% data variables.product.prodname_copilot_short %} knowledge bases _({% data variables.product.prodname_copilot_enterprise_short %} only)_
 
 Create and manage collections of documentation to use as context for chatting with {% data variables.product.prodname_copilot_short %}. When you ask a question in {% data variables.product.prodname_copilot_chat_dotcom_short %} or in {% data variables.product.prodname_vscode_shortname %}, you can specify a knowledge base as the context for your question. For more information, see [AUTOTITLE](/copilot/customizing-copilot/managing-copilot-knowledge-bases).

content/copilot/about-github-copilot/github-copilot-features.md

@@ -29,6 +29,7 @@ You can configure any of the following policies for your enterprise:
 * [Additional {% data variables.product.prodname_copilot_short %} premium requests](#additional-copilot-premium-requests)
 * [{% data variables.product.prodname_copilot_short %} in {% data variables.product.prodname_dotcom_the_website %}](#copilot-in-githubcom)
 * [{% data variables.product.prodname_copilot_cli %}](#github-copilot-in-the-cli)
+* [{% data variables.product.prodname_copilot_desktop_short %} ({% data variables.release-phases.public_preview %})](#copilot-in-github-desktop-public-preview)
 * [{% data variables.product.prodname_copilot_chat %} in the IDE](#github-copilot-chat-in-the-ide)
 * [Editor preview features](#editor-preview-features)
 * [{% data variables.product.prodname_copilot_mobile %}](#github-copilot-chat-in-github-mobile)
@@ -60,6 +61,10 @@ If you enable "{% data variables.product.prodname_copilot_short %} in {% data va
 
 {% data variables.product.prodname_copilot_cli %} is an extension for {% data variables.product.prodname_cli %} which provides a chat-like interface in the terminal. You can ask {% data variables.product.prodname_copilot %} for command suggestions, or for explanations of commands they run.
 
+### {% data variables.product.prodname_copilot_desktop_short %} ({% data variables.release-phases.public_preview %})
+
+You can generate commit messages and descriptions in {% data variables.product.prodname_desktop %} based on the changes you make to your project.
+
 ### {% data variables.product.prodname_copilot_chat %} in the IDE
 
 You can chat with {% data variables.product.prodname_copilot %} in your IDE to get code suggestions and answers to coding-related questions without context switching.

content/copilot/managing-copilot/managing-copilot-for-your-enterprise/managing-policies-and-features-for-copilot-in-your-enterprise.md

@@ -33,6 +33,7 @@ Organization owners can set policies to govern how {% data variables.product.pro
   * Using images in {% data variables.product.prodname_copilot_chat_short %} (available in {% data variables.product.prodname_vscode_shortname %} and {% data variables.product.prodname_vs %})
 * {% data variables.product.prodname_copilot_mobile_short %}
 * {% data variables.product.prodname_copilot_cli_short %} and {% data variables.product.prodname_windows_terminal %}
+* {% data variables.product.prodname_copilot_desktop_short %} ({% data variables.release-phases.public_preview %})
 * Suggestions matching public code
 * Access to alternative models for {% data variables.product.prodname_copilot_short %}
   * Anthropic {% data variables.copilot.copilot_claude_sonnet %} in {% data variables.product.prodname_copilot_short %}

content/copilot/managing-copilot/managing-github-copilot-in-your-organization/managing-policies-for-copilot-in-your-organization.md

@@ -99,14 +99,17 @@ To discard a group of changed lines, right-click the vertical bar to the right o
 
 ## Write a commit message and push your changes
 
-Once you're satisfied with the changes you've chosen to include in your commit, write your commit message and push your changes. If you've collaborated on a commit, you can also attribute a commit to more than one author.
+Once you're satisfied with the changes you've chosen to include in your commit, you need to describe your commit and push your changes. If you've collaborated on a commit, you can also attribute a commit to more than one author.
 
 > [!NOTE]
 > {% data reusables.desktop.tags-push-with-commits %} For more information, see [AUTOTITLE](/desktop/managing-commits/managing-tags-in-github-desktop).
 
-{% data reusables.desktop.commit-message %}
+1. At the bottom of the list of changes, next to your profile picture, describe your commit:
+   * If you have access to {% data variables.product.prodname_copilot %} and you are using [{% data variables.product.prodname_desktop %} beta](https://desktop.github.com/beta/), you can automatically create a commit message and details based on the changes you made. Click {% octicon "copilot" aria-label="Generate commit message with Copilot" %}.
+   * Alternatively, type your own short, meaningful commit message in the Summary field. You can also add more information about the change in the Description field.
+
+   ![Screenshot of the "Changes" tab. The "Summary" field and "Generate commit message with Copilot" button are outlined in orange.](/assets/images/help/desktop/create-commit-details.png)
 
-   ![Screenshot of the "Changes" tab in the sidebar. To the right of a profile picture, a text field containing a commit message is outlined in orange.](/assets/images/help/desktop/commit-message.png)
 1. Optionally, to attribute a commit to another author, click the add co-authors icon and type the username(s) you want to include.
 
    ![Screenshot of the "Changes" tab. In the corner of the "Description" field, the icon for adding a co-author is outlined in orange.](/assets/images/help/desktop/add-co-author-commit.png)