[Bug] qr-scanner.tsx permission request errors silently swallowed

[RUKAYAT-CODER]

Overview

qr-scanner.tsx catches camera permission errors in a bare catch block with no user feedback or error logging. If permission is denied or the request fails, the QR scanner renders a blank screen with no explanation.

Specifications

Features:

• Show a permission-denied UI with a "Go to Settings" deep link when camera access is denied
• Log permission request failures to Sentry

Tasks:

• Replace the bare catch with a structured error handler
• Add a PermissionDeniedView component with a Settings link
• Write a test that mocks permission denial and checks the view renders

Impacted Files:

• src/screens/qr-scanner.tsx
• src/components/common/PermissionDeniedView.tsx (new)

Acceptance Criteria

• Permission denial shows a clear message with Settings link
• Permission errors are logged to Sentry
• Test confirms correct view renders on denial

[Alagba467]

@Alagba467 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer I would like to work on this issue, thank you.

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[benzeneCLI]

@benzeneCLI has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi, I'd like to take this on.

I'm a full-stack developer with solid experience in modern JavaScript/TypeScript, REST APIs, and frontend frameworks like React. I enjoy working in open source and following existing project conventions.

I've reviewed the issue and I'm confident I can implement a solid solution while following the project's conventions.

Please assign this issue to me, I'd be happy to contribute.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @benzeneCLI to this issue.

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Congratulations, @benzeneCLI! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @benzeneCLI: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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[drips-wave]

This issue has been completed by @benzeneCLI as part of the Stellar Wave Program's 7th Wave 🥳

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