Develop TDD Tests for gitflow Scripts using Bats

[ChrisJStone]

Create test-driven development (TDD) unit tests for each gitflow script using Bats. Link this sub-issue to the parent Test Suite issue.

Code references:

• See the Project Status and Next Steps section.
• Utility functions and edge-case handling found in legacy branches should be targeted for Bats tests.

Please specify:

• Priority scripts and functions for TDD coverage
• Known bugs or areas needing special attention
• Requirements for testing edge cases

This sub-issue is part of the comprehensive Test Suite refactor.