Update the docs homepage setup area so “Set up manually” leads into the platform-specific documentation list on the same page rather than linking to a separate page. Use a horizontal split between coding-agent setup and manual setup, as shown in the mockup.

Update the docs homepage setup area so “Set up manually” leads into the platform-specific documentation list on the same page rather than linking to a separate page. Use a horizontal split between coding-agent setup and manual setup, as shown in the mockup.