Add unit tests for SenderDashboard – stream list, metrics display, and create flow

[ritik4ever]

The SenderDashboard.tsx has no test file. It aggregates stream metrics (active count, total vested) and renders the stream creation entry point. Missing test coverage means layout regressions or incorrect metric computation go undetected.

Implementation:
Create frontend/src/components/SenderDashboard.test.tsx:

• Render with 3 active and 2 completed streams → assert metric counts are correct
• Render with no streams → assert zero metrics and "create your first stream" prompt
• Click "Create Stream" button → assert CreateStreamForm is shown
• Mock API error fetching streams → assert error state renders

Acceptance Criteria:

• Active and completed stream counts are computed correctly
• Zero-stream empty state renders the creation prompt
• API error surfaces a user-visible message

[Enemuo-debug]

@Enemuo-debug has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Can I please work on this?

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[OSEH-svg]

@OSEH-svg has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hello Maintainer,
I’d love to work on this issue. I'm a software developer with 5 years of experience and I’m confident I can deliver a good solution. Please feel free to assign it to me.

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[T-kesh]

@T-kesh has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I'd like to work on this

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[drips-wave]

Congratulations, @Enemuo-debug! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

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