Enhances calendar flexibility by introducing group-based column spanning and improving cross-mode event handling
Adds support for:
- Dynamic column grouping in date and resource modes
- Consistent event drag-and-drop across different calendar views
- More robust all-day event layout calculations
Improves event management logic to handle resource and date mode transitions more elegantly
Introduces new ResourceColumnDataSource and ResourceHeaderRenderer to support column rendering by resources instead of dates
Enables dynamic calendar mode switching between date and resource views
Updates core managers and services to support async column retrieval
Refactors data source interfaces to use Promise-based methods
Improves calendar flexibility and resource management capabilities