[GOOD FIRST ISSUE] Add "Copy Profile Link" button to dashboard for sharing public profile URL

[vbarik317-droid]

Summary
Users have no quick way to copy their public profile URL (/u/[username]) from the dashboard. This is a great beginner-friendly UI task!

What needs to be done

• Create a new file src/components/ShareProfileButton.tsx
• Add a "Share Profile" button near the user avatar in the dashboard header
• On click, copy https://devtrack-delta.vercel.app/u/[username] to clipboard
• Show a "Link copied!" toast using the existing shadcn/ui toast system
• Switch the button icon from Link2 → Check for 2 seconds after copy

Files to touch

• src/components/ShareProfileButton.tsx (new file)
• src/app/dashboard/page.tsx (add button near avatar)

Hints

• Use navigator.clipboard.writeText() for clipboard copy
• Use lucide-react icons — already installed (Link2, Check)
• Use shadcn/ui Button, Tooltip, and useToast — all already in the project
• Wrap clipboard call in try/catch for error handling

Good for
Someone comfortable with React + TypeScript basics looking for their first Next.js contribution.

[Srishti-Gupta74]

Hi @Priyanshu-byte-coder! I would like to work on this issue under GSSoC '26.

I plan to create the ShareProfileButton component, integrate it into the dashboard header, implement clipboard copy functionality with proper error handling, and provide visual feedback using the existing toast system and icon state changes.

Kindly assign this issue to me.
Thank you!

[github-actions]

Assigned to @Srishti-Gupta74! You have 7 days to open a PR. No PR after 7 days = auto-unassigned so others can pick it up. Good luck!