The type checker incorrectly inferred `Any` for lambda parameters when a
`Program` node was involved, preventing optimizations like constant
folding. This was because the `check_params_tuple` function was
resolving `TypeVar` to `StaticType::Any` instead of propagating the type
variable.
This commit addresses the issue by:
- Explicitly wrapping the bound AST in a parameterless lambda within
`compile_pipeline`. This ensures that the type checker always receives
a `Lambda` node, even if the original input was a `Program` node.
- Adding debug logging to the type checker to help diagnose similar
issues in the future.
Additionally, the commit fixes a bug where `parser.parse_program()` was
used instead of `parser.parse_expression()`, which would consume the
entire input and prevent checking for trailing expressions.
Brummel
19008b5d3e