Summary: Lovable adds Lovable Cloud and new navigation

Why It Matters: This shows Lovable is changing its main product and how users find things.

What Changed:

• The main title changed from "Build something Lovable" to "Lovable".
• A new section "Introducing Lovable Cloud" was added.
• New navigation links were added at the top for Community, Pricing, Enterprise, Learn, and Launched.
• Login and Get started buttons were added.
• A "Public" category was added to the project types.
• A "View All" link was added for projects.
• All the individual project listings with remix counts were removed.
• A detailed footer section was added with links for Company, Product, Resources, Legal, and Community.