Wax_langSourceSpecialization of Wax conditional annotations (#[if(...)] / #[else]) against user-supplied variable bindings, the Wax-AST counterpart of Wax_wasm.Cond_specialize.module_.
The inferred-type lattice used while type checking, the mutable cells (Cell) that carry it, and the shared printers/type aliases built on top.
Sync-token classification for the Wax parser's panic-mode error recovery.