Refactors calendar configuration and event handling

Streamlines calendar configuration by adopting a singleton pattern for consistent access and simplifies event handling.

- Removes direct `CalendarConfig` dependency injection in favor of the `calendarConfig` singleton, reducing code complexity.
- Replaces specific event emissions for grid, date, and resource settings updates with a general `REFRESH_REQUESTED` event.
- Updates event names to be more descriptive and consistent ("NAVIGATION_COMPLETED", "PERIOD_INFO_UPDATE").
- Removes the need to pass the calendar config to renderers since it is now a singleton.

This improves code maintainability and simplifies the event emission process.

src/renderers/ColumnRenderer.ts

@@ -34,7 +34,7 @@ export class DateColumnRenderer implements ColumnRenderer {
     // Initialize date calculator and work hours manager
     DateCalculator.initialize(config);
     this.dateCalculator = new DateCalculator();
-    this.workHoursManager = new WorkHoursManager(config);
+    this.workHoursManager = new WorkHoursManager();
     
     const dates = DateCalculator.getWorkWeekDates(currentWeek);
     const dateSettings = config.getDateViewSettings();