✅ Add test signup viewmodel

[paul2126]

PR Title: [Descriptive title summarizing the change]

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PR Description:

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Changes Included:

• Added new feature(s)
• Fixed identified bug(s)
• Updated relevant documentation

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Reviewer Checklist:

• Code is written in clean, maintainable, and idiomatic form.
• Automated test coverage is adequate.
• All existing tests pass.
• Manual testing has been performed to ensure the PR works as expected.
• Code review comments have been addressed or clarified.

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