Fix Failing Foundry Tests and Add Missing Test Cases

[elizabetheonoja-art]

Task

Fix all failing Foundry tests and add tests for untested contract functionality.

Scope

• Run forge test and identify failures
• Fix test assertions and mocking issues
• Add tests for edge cases and security scenarios
• Achieve 90%+ test coverage

Acceptance Criteria

• All forge tests pass
• Critical paths have test coverage
• No skipped tests without justification

[zinodict121]

I would like to work on this issue.

[github-actions]

@zinodict121 has been assigned to this issue! 🎉

You can now start working on it. Good luck!

[grantfox-oss]

🦊 GrantFox — @zinodict121 has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #136)
2. Your PR will be reviewed by the Utility-Protocol maintainers

Good luck! Track your progress on GrantFox.

[zinodict121]

I would like to work on this issue.

[github-actions]

@zinodict121 you are already assigned to this issue.