Fix/scan recursive multiple repos

[anIcedAntFA]

📝 Description

• Refactor ScanGitRepos() to use scanRecursive() helper function
• Support nested directory structures like github.com/{org}/{repo}
• Scan up to 2 levels deep to detect repos in subdirectories
• Skip scanning inside git repos to avoid nested repo detection
• Improve error handling: continue scanning even if subdirectory fails
• Add unit test for scanner
• Support --max-depth flag option

🔗 Related Issue

Closes #(issue number)

👥 Reviewers

@anIcedAntFA

🎯 Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• ♻️ Code refactoring (no functional changes)
• 🎨 Style/UI update
• ⚡ Performance improvement
• ✅ Test update
• 🔧 Configuration update (CI/CD, linters, build tools)
• 🧹 Chore (dependencies, cleanup, maintenance)
• 🔒 Security fix
• ♿ Accessibility improvement

🧪 How Has This Been Tested?

• Unit tests
• Integration tests
• Manual testing

Test Configuration:

• OS: Arch Linux
• Go version: 1.25.5

📸 Screenshots (if applicable)

✅ Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have run gofumpt -l -w . to format my code
• I have run golangci-lint run and fixed any issues

📚 Additional Notes

[codecov]

Codecov Report

❌ Patch coverage is 73.91304% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
internal/scanner/scanner.go	73.91%	3 Missing and 3 partials ⚠️

📢 Thoughts on this report? Let us know!