fix: support for vscode workspace vars

[syndbg]

Summary

As per https://code.visualstudio.com/docs/reference/variables-reference

Type of Change

• Bug fix
• New feature
• Documentation update
• Refactoring
• Other (specify): ___________

Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• All tests pass locally (make check)

Checklist

• Code follows project style guidelines
• Self-review completed
• Documentation updated (if applicable)
• Tests pass locally
• Commit messages follow conventional format
• No global variables introduced (use factory functions)
• One struct per file principle followed
• SOLID principles and dependency injection used

Related Issues

Fixes #(issue number)

Additional Notes