Bug: QR code scanner fails silently on iOS Safari when camera permission is denied

[Nareshkumawat-star]

Describe the bug

When a user denies camera permission on iOS Safari and then tries to scan a DevCard QR code, the scanner shows a blank screen with no error message or prompt to re-enable permissions.

Steps to Reproduce

1. Open DevCard on iOS Safari
2. Deny camera permission when prompted
3. Try to use QR scanner
4. Screen goes blank — no feedback shown

Expected Behavior

App should show a clear error message with a link to iOS Settings to re-enable camera access.

Suggested Fix

Catch the NotAllowedError from getUserMedia() and display a user-friendly dialog with instructions to re-enable camera permission in Settings.

[github-actions]

Hi @Nareshkumawat-star,

Thanks for opening this issue.

Please reply with one of the following areas so the issue can be routed to the appropriate team member:

- /backend
- /web
- /mobile
- /devops

Once an area is selected, the corresponding label will be added automatically.

[github-actions]

👋 Thanks for opening your first issue, @Nareshkumawat-star!

We appreciate your contribution and are excited to have you here. Please make sure to follow the contribution guidelines and provide as much detail as possible.

To stay updated, ask questions, and connect with maintainers and contributors, please join our Discord community:
https://discord.gg/QueQN83wn

Looking forward to collaborating with you!

[Nareshkumawat-star]

/web

[github-actions]

The issue has been classified as web.

@ShantKhatri, please review and triage this issue when available.

The web label has been applied and the issue has been routed accordingly.