Refactor CalendarConfig to static configuration class

Converts CalendarConfig to a pure static configuration management class with improved initialization and dependency handling

Removes event bus dependencies and simplifies configuration loading
Adds static methods for config management and initialization
Improves flexibility and reduces class complexity

src/managers/EventManager.ts

@@ -57,8 +57,8 @@ export class EventManager {
     private async loadMockData(): Promise<void> {
         const calendarType = this.config.getCalendarMode();
         const jsonFile = calendarType === 'resource'
-            ? '/src/data/mock-resource-events.json'
-            : '/src/data/mock-events.json';
+            ? '/data/mock-resource-events.json'
+            : '/data/mock-events.json';
         
         const response = await fetch(jsonFile);
         if (!response.ok) {