feat(share): Add Copy Link Button to ShareButtons Component

[tmdeveloper007]

Summary of What Has Been Done

Added a copy-link button to components/ShareButtons.tsx that copies the share URL to the clipboard when clicked. Uses the existing copyToClipboard utility with graceful fallback to document.execCommand for older browsers.

Changes Made

• components/ShareButtons.tsx: Added FaLink icon from react-icons/fa6, import of copyToClipboard from @/utils/clipboard, and a <button> with aria-label="Copy link to clipboard". The button gracefully handles clipboard API failures silently.
• components/ShareButtons.test.tsx: Added clipboard API mock, and two new test cases for the copy-link button: verifying it renders and that it calls navigator.clipboard.writeText with the correct URL.

Impact it Made

Improves UX by providing a quick way to copy the URL without opening a social media share dialog. Follows accessibility best practices with proper aria labels.

Closes #8335

Note: Please assign this PR to the tmdeveloper007 account.

[vercel]

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[retenta-bot]

This PR enhances the user experience by providing a quick way to copy URLs directly from the ShareButtons component. It leverages the existing copyToClipboard utility, which has been previously validated for its fallback support in older browsers. This aligns with our goal of improving usability across the application. Thank you for your contribution, and I look forward to seeing this feature in action!

[github-actions]

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Unfortunately, this PR has been automatically closed because you are not assigned to the linked issue #8335 — feat(share): add copy-link button to ShareButtons component.

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