- Add NSObject inheritance to root classes for ObjC compatibility
- Add @objc(Spine<ClassName>) and @objcMembers annotations to all classes
- Fix property name conflicts (className -> rttiClassName, hash -> hashString)
- Use @nonobjc on subclass initializers to avoid selector conflicts
- Fix convenience init override modifiers
- Update ObjC example to use new API method names
- Update test to use rttiClassName property