🧪 Add tests for git utilities

[sunnylqm]

🎯 What: The testing gap in src/utils/git.ts is addressed by creating a new tests/git.test.ts file and implementing testing for getCurrentCommit and getCommitInfo. The missing getCurrentCommit function and spawnSync import were restored to src/utils/git.ts.
📊 Coverage: The happy path and error condition for getCurrentCommit are covered using mock.module on child_process. Testing for getCommitInfo covers the happy path, fallback condition (handling missing author name), and error scenario, using mock.module on isomorphic-git.
✨ Result: Test coverage for git utilities is now greatly improved and fully functional with proper mocks.

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PR created automatically by Jules for task 4195643520568890578 started by @sunnylqm

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 201144cc-ea06-4aec-ab85-cb0d7b8661af

📥 Commits

Reviewing files that changed from the base of the PR and between 2be3698 and 76ac105.

📒 Files selected for processing (2)

• src/utils/git.ts
• tests/git.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jules-test-git-utils-4195643520568890578

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