Add community and use cases pages with UI polish

[chigozirim007]

#Community + Use Cases Pages, Loading States, and UI Polish

Overview

This PR ships the remaining UX items tied to the Stellar Suite marketing site. It adds the Community and Use Cases pages, introduces lightweight loading states, and improves navigation with a top route loader and a scroll-to-top affordance. The goal is to make the frontend feel complete without overengineering or heavy abstractions.

What’s Included

• Community page with contributor highlights, stats, and clear contribution paths.
• Use cases & examples page showcasing common workflows and template-driven examples.
• Top route loader for visual feedback on navigation.
• Scroll-to-top button on the home page for long-scroll UX.
• Skeleton loaders for app-level and key routes (home, blog index, blog post, FAQ, community, use cases).
• Navigation and footer updates to surface the new pages.

Implementation Notes

• Kept new components small and direct: no extra providers, no heavy state machines.
• Loading UI uses the existing Skeleton component with simple layouts.
• The route loader responds to usePathname changes and is intentionally minimal.
• Scroll-to-top is a small client component used only on the home page.

Files Touched (High-Level)

• New pages: frontend/src/app/community/page.tsx, frontend/src/app/use-cases/page.tsx
• New loading states: frontend/src/app/**/loading.tsx
• New UI components: frontend/src/components/RouteTopLoader.tsx, frontend/src/components/ScrollToTopButton.tsx
• Navigation updates: frontend/src/components/Navbar.tsx, frontend/components/layout/Navbar.tsx, frontend/components/layout/Footer.tsx
• Layout/home updates: frontend/src/app/layout.tsx, frontend/src/app/page.tsx

Issues Closed

• Closes Add scroll-to-top button on home page #269
• Closes Add skeleton loaders for async content #268
• Closes Add top loader (route-change progress bar) #266
• Closes Community and contributors page #263
• Closes Build use cases and examples page #259

Testing

• Not run (UI-only changes).

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Project	Deployment	Actions	Updated (UTC)
stellar-suite	Ready	Preview, Comment	Feb 26, 2026 0:29am

[0xVida]

Please recheck and fix errors causing lint to fail
Also sync conflicting files