Major refactor into type safe TS

With a risk oof rolling it all back

src/factories/ManagerFactory.ts

@@ -8,6 +8,7 @@ import { ViewManager } from '../managers/ViewManager';
 import { CalendarManager } from '../managers/CalendarManager';
 import { DragDropManager } from '../managers/DragDropManager';
 import { AllDayManager } from '../managers/AllDayManager';
+import { CalendarManagers } from '../types/ManagerTypes';
 
 /**
  * Factory for creating and managing calendar managers with proper dependency injection
@@ -27,17 +28,7 @@ export class ManagerFactory {
   /**
    * Create all managers with proper dependency injection
    */
-  public createManagers(eventBus: IEventBus): {
-    eventManager: EventManager;
-    eventRenderer: EventRenderingService;
-    gridManager: GridManager;
-    scrollManager: ScrollManager;
-    navigationManager: NavigationManager;
-    viewManager: ViewManager;
-    calendarManager: CalendarManager;
-    dragDropManager: DragDropManager;
-    allDayManager: AllDayManager;
-  } {
+  public createManagers(eventBus: IEventBus): CalendarManagers {
     
     // Create managers in dependency order
     const eventManager = new EventManager(eventBus);
@@ -75,13 +66,10 @@ export class ManagerFactory {
   /**
    * Initialize all managers in the correct order
    */
-  public async initializeManagers(managers: {
-    calendarManager: CalendarManager;
-    [key: string]: any;
-  }): Promise<void> {
+  public async initializeManagers(managers: CalendarManagers): Promise<void> {
     
     try {
-      await managers.calendarManager.initialize();
+      await managers.calendarManager.initialize?.();
     } catch (error) {
       throw error;
     }