Refactors and optimizes core calendar managers

Streamlines several core managers by removing unnecessary complexity, caching, and redundant methods

Key improvements:
- Simplified event and view management logic
- Removed unnecessary caching mechanisms
- Reduced method complexity in managers
- Improved code readability and performance

src/managers/HeaderManager.ts

@@ -26,20 +26,6 @@ export class HeaderManager {
     this.setupNavigationListener();
   }
 
-  /**
-   * Initialize header with initial date
-   */
-  public initializeHeader(currentDate: Date): void {
-    this.updateHeader(currentDate);
-  }
-
-  /**
-   * Get cached calendar header element
-   */
-  private getCalendarHeader(): HTMLElement | null {
-    return document.querySelector('swp-calendar-header');
-  }
-
   /**
    * Setup header drag event listeners - Listen to DragDropManager events
    */
@@ -65,8 +51,6 @@ export class HeaderManager {
       originalElement: !!originalElement,
       cloneElement: !!cloneElement
     });
-
-    // Header renderer already injected - ready to use if needed
   }
 
   /**
@@ -115,7 +99,7 @@ export class HeaderManager {
       rendererType: this.headerRenderer.constructor.name
     });
 
-    const calendarHeader = this.getOrCreateCalendarHeader();
+    const calendarHeader = document.querySelector('swp-calendar-header') as HTMLElement;
     if (!calendarHeader) {
       console.warn('❌ HeaderManager: No calendar header found!');
       return;
@@ -130,9 +114,7 @@ export class HeaderManager {
       config: this.config
     };
 
-    console.log('🎨 HeaderManager: Calling renderer.render()', context);
     this.headerRenderer.render(calendarHeader, context);
-    console.log('✅ HeaderManager: Renderer completed');
 
     // Setup event listeners on the new content
     this.setupHeaderDragListeners();
@@ -143,18 +125,4 @@ export class HeaderManager {
     };
     eventBus.emit('header:ready', payload);
   }
-
-  /**
-   * Get calendar header element - header always exists now
-   */
-  private getOrCreateCalendarHeader(): HTMLElement | null {
-    const calendarHeader = this.getCalendarHeader();
-
-    if (!calendarHeader) {
-      console.warn('HeaderManager: Calendar header not found - should always exist now!');
-      return null;
-    }
-
-    return calendarHeader;
-  }
 }