docs: jwt auth redirects

settings/authentication-personalization/authentication-setup/jwt.mdx

@@ -100,3 +100,20 @@ async def return_mintlify_auth_status(current_user):
   return RedirectResponse(url=f'https://docs.foo.com/login/jwt-callback#{jwt_token}', status_code=302)
 ```
 </CodeGroup>
+
+## Redirecting Unauthenticated Users
+
+When an unauthenticated user tries to access a specific page, Mintlify preserves their intended destination through a redirect flow:
+
+1. The user attempts to visit a certain page (e.g., `/quickstart`)
+
+2. Mintlify redirects them to your login URL and adds the (relative) original destination as a `redirect` query parameter
+
+Example:
+
+* Original request: [`https://docs.foo.com/quickstart`](https://docs.foo.com/quickstart)
+
+* Redirect to login: [`https://foo.com/docs-login?redirect=%2Fquickstart`](https://foo.com/docs-login?redirect=%2Fquickstart)
+
+After successful authentication, you can include this same `redirect` parameter in your JWT callback URL to send users to their intended destination:
+`https://docs.foo.com/login/jwt-callback?redirect=%2Fquickstart#{SIGNED_JWT}`