Add changelog entry for May 23rd, 2025 AI assistant update

changelog.mdx

@@ -4,6 +4,12 @@
 mode: "center"
 ---
 
+<Update label="May 23, 2025">
+  ## AI Assistant
+
+  We've upgraded our AI chat to a new AI assistant with enhanced capabilities and improved user experience.
+</Update>
+
 <Update label="May 2025">
   ## API playground stability updates
   - Search to find an endpoint
@@ -83,7 +89,7 @@
   - Improved styling nits for dashboard border for mobile-tablet-desktop responsiveness
   - Show code examples even when in simple mode for API playground
   - Support "command \+ k" shortcut for search in web editor
   - Codeblocks within callouts expand to fill the width of the callout area
 </Update>
 
 <Update label="February 2025">
@@ -114,9 +120,9 @@
 
   Automatically lint your docs to find broken links, discover spelling and grammar issues, or enforce writing styles with your own Vale config. Learn more in our [docs](settings/ci).
 
   ## .md support for LLMs
 
   All documentation pages are now automatically available as plain Markdown files—just append `.md` to the URL. This makes it easier for LLMs to ingest individual pages from your documentation.
 
   ## More Themes
 
@@ -198,7 +204,7 @@
   <Frame>
     ![llms.txt support](/images/changelog/llms.jpg)
   </Frame>
   All docs instances are now automatically hosted at /llms.txt and /llms-full.txt so that LLMs can easily ingest your documentation. For more information, read the [docs on the new llms.txt standard.](https://llmstxt.org)
 
   ## Localization
 
@@ -270,7 +276,7 @@
   ## Dashboard Improvements
 
   - Added ability to change custom domain to be /docs directly through dashboard settings.
   - Consolidated the login and signup pages to decrease friction and confusion.
   - Implemented the discovery login flow so that users that are members of multiple organizations can now switch between them.
   - Added login with Google OAuth
   - Added ability to add new deployment through dashboard settings.
@@ -284,7 +290,7 @@
   - Don't allow search engines to crawl user-auth protected pages.
   - Revalidate the cache when an org is deleted.
   - We now use the Scalar OpenAPI parser to parse OpenAPI definitions which improves the performance, fixes parsing issues, and surfaces better error messages.
   - Top-level descriptions are now supported in API reference pages autogenerated from OpenAPI definitions.
   - Add in-line-style support for icons
   - Fixed the pop-in of custom CSS in docs.
   - Properly show in-line code styling in conjunction with links.
@@ -351,7 +357,7 @@
 
   ## File Uploads in API Playground
 
   By default, API playground requests are proxied by Mintlify. Now you can use
   `disableProxy` to disable this behavior and support request types like file
   uploads.
 
@@ -384,7 +390,7 @@
   </Frame>
   For `Pro` users, we introduced Mintlify Widget, an extension of your docs to
   answer your users' questions when and where they asked. You can add this
   AI-powered chatbot to any web page: your landing page, inside your product, or
   on your existing documentation pages.
 
   - [Read the blog announcement](https://mintlify.com/blog/widget)
@@ -419,7 +425,7 @@
 <Update label="May 2024">
   ## Okta SSO
 
   We now support sign-on via Okta SAML and OIDC.
 
   ## Mintlify REST API
 
@@ -442,7 +448,7 @@
 <Update label="March 2024">
   ## Mintlify MDX for VSCode
 
   Call snippets of our pre-built components and callouts without leaving VSCode. [Install the extension here](https://marketplace.visualstudio.com/items?itemName=mintlify.mintlify-snippets).
 </Update>
 
 <Update label="February 2024">
@@ -451,7 +457,7 @@
   - Dashboard upgrades: view update logs to see what's changed and status of an update, toggle between Mintlify projects to manage deployments
   - Versioning with tabs fully supported
   - Wildcard redirects now supported
   - CLI Error Detection: we now show the position of invalid frontmatter when there are parsing issues during local development
 </Update>
 
 <Update label="January 2024">