[BUG] fix: add catch handler for clipboard writeText in handleCopyLink

[ask-z4ch]

Description

The "Copy Link" button in VideoEditor triggers navigator.clipboard.writeText() without a .catch() handler. If the clipboard API rejects (permission denied, not served over HTTPS, browser focus lost), the promise rejection goes unhandled.

Steps to Reproduce

1. Open the editor and upload a video.
2. Make any edit.
3. Click "Copy Link" while clipboard permission is denied (or served over HTTP, not HTTPS).
4. Observe the unhandled promise rejection in console.

Expected Behavior

If clipboard access fails, the error should be caught and logged gracefully, matching the existing pattern at line 661.

Actual Behavior

Unhandled promise rejection: DOMException - Clipboard write failed

Additional Context

The same file already handles this correctly for the "Copy error" button at line 658-663:

[github-actions]

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Architecture notes

Reframe is a static Next.js app with output: "export". Key points:

• All video processing uses FFmpeg.wasm (client-side, no server)
• headers() in next.config.ts won't work — use vercel.json instead
• not-found.tsx requires public/404.html + vercel.json routes config

Happy contributing! ⭐ Star the repo if you find it useful!

[ask-z4ch]

/assign

Hi @magic-peach , I'd like to work on this — contributing under GSSoC'26.
To resolve this, I plan to:

• Add a missing .catch() handler to the navigator.clipboard.writeText() promise in the handleCopyLink function to prevent unhandled promise rejection.
• Modify src/components/VideoEditor.tsx function handleCopyLink at line 258.
• Ensure the code matches the project's formatting and styling rules without adding redundant imports.
• Manually verify and test the updated execution path to guarantee zero regressions.

I will have a clean pull request raised within 24 to 48 hours!

[github-actions]

Hey @ask-z4ch, this issue has been assigned to you! 🎉 Please make progress within 5 days or it will be automatically unassigned due to inactivity.

[github-actions]

Hey @ask-z4ch, just a friendly reminder that this issue has had no activity for 2 days. Please leave an update or let us know if you need help! ⏰

[github-actions]

Hey @ask-z4ch, final warning! ⚠️ This issue has had no activity for 4 days and will be automatically unassigned in 24 hours if there is no update.

[ask-z4ch]

@magic-peach I've linked a PR, kindly review.

[ask-z4ch]

I've opened PR #1330 which resolves this issue.
Link: https://github.com/magic-peace/reframe/pull/1330