Added scroll-to-top button for improved navigation

[vishalm342]

PR Description
Adds a floating “scroll-to-top” button to the web site for faster navigation on long pages.

What’s changed

• New component: apps/web/components/ScrollToTop.tsx
• Wired into global layout: apps/web/app/layout.tsx

Behavior

• Appears after scrolling 300px.
• Smoothly scrolls to top on click.
• Accessible (aria-label, focus ring), keyboard-friendly.
• Matches Tailwind design and supports dark mode.
• Positioned bottom-right (fixed).

Test plan

• Run: npm run web (or npm run dev and open http://localhost:3000)
• Scroll down homepage/docs; button appears.
• Click button → smooth scroll to top.
• Verify in light/dark mode and on mobile sizing.

Implementation details

• Client component using window scroll listener.
• Visibility threshold = 300px.
• No breaking changes; renders globally from layout.tsx.

Linked issue
Closes #217

Screenshot

[vercel]

@vishalm342 is attempting to deploy a commit to the vailabel Team on Vercel.

A member of the Team first needs to authorize it.

[vishalm342]

hey, Vercel deployment is failing with "Authorization required to deploy" - this needs repository owner permissions to resolve.

The code is ready to merge once the Vercel authorization is configured.

label it as hacktoberfest and close the PR, Thanks!