Brummel
7d6e040721
This commit addresses the critical rule regarding exhaustive `match` expressions on AST node kinds. By explicitly listing all variants instead of using wildcards (`_ =>`), we ensure that new AST node types are consciously handled throughout the compilation pipeline. This practice prevents subtle bugs and makes the compiler more robust against future changes. The `CLAUDE.md` file has been updated to reflect this critical rule. The deleted `BUG_program_node_typeinference.md` file indicates that a previously identified bug related to type inference with `Program` nodes has been resolved, likely as a consequence of enforcing these exhaustive matches.