- Add PHP 8 attributes: AsComponentStory, Prop, Slot, NestedAttribute, Story
- Create AbstractComponentStory base class with reflection-based extraction
- Add StoryRegistry service with auto-discovery via tagged services
- Add StoryExample value object with fluent builder pattern
- Migrate Button and Stepper components to PHP story classes
- Add Prism.js syntax highlighting for code examples
- Update controller and template to use story data
- Remove old preview templates for Button and Stepper