### Added
- Added grammar rule for `` cast and method return type. `STATIC` is a reserved keyword token, so `` never reached the existing `LESS IDENTIFIER GREATER` cast rule and was rejected as a syntax error. A dedicated `LESS STATIC GREATER` production now emits the literal `"static"` string in the same AST shape that `` (and any other `` cast) produces, so the downstream compiler picks it up with no further parser-level changes. Enables `public function foo() -> ` for late-static-binding return types in Zephir
([zephir-lang/zephir#2505](https://github.com/zephir-lang/zephir/issues/2505)).