Updates header and viewport components to use CSS subgrid for more flexible layout
Improves grid structure by:
- Replacing fixed grid columns with subgrid
- Adjusting scrollbar and overflow properties
- Simplifying header and track element positioning
Introduces HeaderDrawerRenderer and HeaderDrawerLayoutEngine to support dragging events into an all-day header drawer
Enables dynamic event placement and conversion between timed and all-day events through new drag interactions
Implements flexible layout calculation for header items with column and row management
Extends DragDropManager to handle header zone interactions
Adds new event types for header drag events
Prevents text selection for calendar-related custom elements to improve user interaction and prevent accidental text highlighting
Enhances UI consistency across calendar components
Introduces comprehensive schedule management for resources:
- Adds DateService with advanced time and date utilities
- Implements ResourceScheduleService for managing work hours
- Creates ScheduleRenderer to visualize unavailable time zones
- Extends resource model to support default weekly schedules
Enables granular tracking of resource availability and working hours
