- Support ekPath in lowerExpr for enum variants (Color::Red → Color_Red)
- Support module paths (Std::Io::PrintLine → Std_Io_PrintLine)
- Add enums.bux example demonstrating enum usage
- Enums now compile and run correctly
- hello.bux: Hello World with PrintLine
- fibonacci.bux: Recursive Fibonacci with while loop
- factorial.bux: Recursive Factorial computation
- structs.bux: Struct creation and field access
All examples compile and run successfully via 'bux run'