v0.19.0

Added

• Trait method undefined function detection: diagnostics now detect when trait methods reference undefined functions, improving visibility into broken trait implementations.
• Enhanced inheritance chain checking for magic methods (__get, __invoke): full ancestor chain is now properly examined, catching edge cases where magic methods are defined in distant parent classes.

Fixed

• Magic method resolution (__get, __invoke) now checks the complete ancestor chain instead of stopping at the immediate parent, fixing false negatives where inherited magic methods were not detected.
• Unused method tests now properly handle collateral errors, improving test reliability and reducing false positives in fixture validation.