docs: document Assistant content updates workflow and changelog context repos

workflows/enable.mdx

@@ -38,6 +38,14 @@
 
 For GitHub repositories, you must install the Mintlify GitHub App on each repository. Add repositories on the [GitHub app](https://dashboard.mintlify.com/settings/organization/github-app) settings page.
 
+### Context repositories
+
+Some workflows let you add context repositories so the agent can read source code, release notes, or other references when it runs. You can add up to five context repositories per workflow.
+
+Context repositories are available for workflows where the agent needs information outside your content repository, like the **Changelog** workflow. They are read-only — the agent cannot push changes to a context repository.
+
+For GitHub repositories, you must install the Mintlify GitHub App on each context repository. For GitLab repositories, connect each project through the GitLab OAuth integration.
+
 ### Update mode
 
 Each workflow has a default mode for how it makes updates, either by directly updating your content repository or by opening a pull request.
@@ -72,16 +80,22 @@
 
 #### Run a translation immediately
 
 After saving the workflow, click **Translate now** to run it on demand using the currently saved target languages. The workflow must be enabled to trigger a manual run. Manual runs do not affect the workflow's regular trigger.
 
-## Improve docs from assistant chats
+## Assistant content updates
 
-The **Improve docs from assistant chats** workflow reviews recent trends in [assistant](/assistant/index) questions and opens targeted documentation updates that address gaps your users hit.
+The **Assistant content updates** workflow reviews recent trends in [assistant](/assistant/index) questions and opens targeted documentation updates that address gaps your users hit.
 
 Use this workflow when you want the agent to triage assistant activity for you and propose changes that answer the questions users actually ask.
 
 This workflow runs on a schedule. It does not require trigger repositories or extra context configuration. Enable it from the [Workflows](https://dashboard.mintlify.com/products/workflows?tab=workflows) page and pick whether updates merge automatically or open a pull request for review.
 
+## Changelog
+
+The **Changelog** workflow drafts entries that summarize recent product changes so you can keep your changelog up to date without writing each entry by hand.
+
+You can run this workflow on a schedule or in response to pushes to a product repository. Add up to five [context repositories](#context-repositories) so the agent can read the source code, release notes, or merged pull requests it should summarize.
+
 ## Improve docs from feedback
 
 The **Improve docs from feedback** workflow reviews recent [page feedback](/optimize/feedback) and opens targeted documentation updates based on the issues users report.
@@ -90,6 +104,6 @@
 
 When a run completes, the run detail in your dashboard includes the specific feedback citations the agent used. Each citation links to the feedback in your [analytics dashboard](https://dashboard.mintlify.com/products/analytics/v2/feedback) so you can verify the context that drove the update.
 
 This workflow runs on a schedule and requires that feedback collection is enabled on the [Add-ons](https://dashboard.mintlify.com/products/addons) page. It does not require trigger repositories or extra context configuration.
 
 <GitlabWorkflowSetup />