docs(getting-started): remove next steps section from local setup

- Removed the "Next Steps: Customize Your Toolkit" section from the local setup guide
- Deleted content including congratulations message and links to architecture customization

Author: fulleni

src/content/docs/getting-started/local-setup.mdx

@@ -28,11 +28,3 @@ We recommend following the guides in the order presented to ensure a smooth setu
 
     [Go to Mobile App Setup Guide →](/docs/mobile-client/local-setup/)
 </Steps>
-
-### Next Steps: Customize Your Toolkit
-
-Congratulations! You now have the entire toolkit running locally. This is the perfect time to explore the architecture and learn how to make it your own.
-
-The next logical step is to dive into our **Architecture & Customization** section, where you will learn how to take ownership of the shared packages and begin customizing your applications.
-
-[**Go to Architecture & Customization &rarr;**](/docs/architecture/)