🛡️ Sentinel: Fix CI version and add input sanitization

[google-labs-jules]

🛡️ Sentinel: [MEDIUM] Fix CI version and add input sanitization

🚨 Severity: MEDIUM

💡 Vulnerability

1. The GitHub Actions workflows were using a non-existent version of actions/checkout (v7), causing pipeline instability.
2. The CLI application did not sanitize the name input, allowing whitespace-only strings to be processed instead of defaulting to "World".

🎯 Impact

• Broken CI/CD pipeline preventing automated checks and deployments.
• Potential for invalid or confusing output when the application is provided with whitespace-only input.

🔧 Fix

• Updated actions/checkout@v7 to actions/checkout@v4 in .github/workflows/check.yml and .github/workflows/docs.yml.
• Modified project/app.py to strip leading/trailing whitespace from the name argument and default it to "World" if empty after stripping.
• Added a new test case test_greet_whitespace in tests/test_app.py to ensure robust handling of whitespace-only names.

✅ Verification

• Ran uv run pytest: All 6 tests passed (including the new test case).
• Ran uv run ruff check .: No linting issues found.
• Manually verified the CLI behavior: app --name " " now correctly outputs "Hello World! 👋".

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PR created automatically by Jules for task 14218081565423741942 started by @amrabed

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud