Updates ScrollManager to dynamically sync header spacer height using ResizeObserver
Removes explicit spacer animation from HeaderDrawerManager
Simplifies header and scroll interaction by moving height synchronization logic to ScrollManager
Updates time axis and calendar to focus on 6-18 hour range
Modifies CSS to support nested selectors and time range configuration
Enhances DateService to support flexible week date generation
Introduces ScrollManager to synchronize time axis and header scrolling
Improves user experience by keeping time axis and header aligned during scrolling
Enables dynamic vertical and horizontal scroll tracking for calendar components
Introduces dependency injection container and composition root
Adds core services like DateService and NavigationAnimator
Simplifies CalendarOrchestrator with improved store handling
Implements mock stores and demo application for V2 calendar
