Brummel
02ea2f0d80
The `Program` node kind is introduced to represent top-level code blocks, distinguishing them from `Block` nodes which introduce new scopes. This commit updates various compiler passes to handle the `Program` node, ensuring correct AST traversal and processing. The `Program` node is similar to `Block`, but its definitions propagate to the enclosing scope, unlike `Block` which creates a new, isolated scope. This distinction is important for how variables and functions are resolved within the compiled code.