"Contributing — parser and HIR"

Path	Role
`crates/vox-compiler/src/lexer`	Tokenization
`crates/vox-compiler/src/parser`	Recursive descent → `ast::decl::Module`
`crates/vox-compiler/src/hir/lower`	AST → `HirModule`
`crates/vox-compiler/src/hir/validate.rs`	Structural invariants
`crates/vox-compiler/src/typeck`	HIR typechecking

Commands

cargo test -p vox-compiler
cargo test -p vox-compiler --test parser_recovery

Definition of done

Parser / HIR changes include tests (unit or tests/*.rs).
New declaration kinds either get a dedicated Hir* vector or land in legacy_ast_nodes only with an inventory update and a graduation plan.