diff --git a/src/v2/constants/CoreEvents.ts b/src/v2/constants/CoreEvents.ts
index 11ae6c3..1425a2f 100644
--- a/src/v2/constants/CoreEvents.ts
+++ b/src/v2/constants/CoreEvents.ts
@@ -71,5 +71,8 @@ export const CoreEvents = {
 
   // Calendar command events
   CALENDAR_CMD_NAVIGATE_PREV: 'calendar:cmd:navigate:prev',
-  CALENDAR_CMD_NAVIGATE_NEXT: 'calendar:cmd:navigate:next'
+  CALENDAR_CMD_NAVIGATE_NEXT: 'calendar:cmd:navigate:next',
+  CALENDAR_CMD_DRAWER_TOGGLE: 'calendar:cmd:drawer:toggle',
+  CALENDAR_CMD_RENDER: 'calendar:cmd:render',
+  CALENDAR_CMD_WORKWEEK_CHANGE: 'calendar:cmd:workweek:change'
 } as const;
diff --git a/src/v2/core/CalendarApp.ts b/src/v2/core/CalendarApp.ts
index ac86fcd..375ca76 100644
--- a/src/v2/core/CalendarApp.ts
+++ b/src/v2/core/CalendarApp.ts
@@ -86,26 +86,27 @@ export class CalendarApp {
       this.handleNavigateNext();
     });
 
-    // Other commands via container DOM events (migrates later)
-    this.container.addEventListener('calendar:cmd:render', ((e: CustomEvent) => {
-      const { viewId, direction } = e.detail;
-      this.handleRenderCommand(viewId, direction);
+    // Drawer toggle via EventBus
+    this.eventBus.on(CoreEvents.CALENDAR_CMD_DRAWER_TOGGLE, () => {
+      this.headerDrawerManager.toggle();
+    });
+
+    // Render command via EventBus
+    this.eventBus.on(CoreEvents.CALENDAR_CMD_RENDER, ((e: CustomEvent) => {
+      const { viewId } = e.detail;
+      this.handleRenderCommand(viewId);
     }) as EventListener);
 
-    this.container.addEventListener('calendar:cmd:drawer:toggle', (() => {
-      this.headerDrawerManager.toggle();
+    // Workweek change via EventBus
+    this.eventBus.on(CoreEvents.CALENDAR_CMD_WORKWEEK_CHANGE, ((e: CustomEvent) => {
+      const { presetId } = e.detail;
+      this.handleWorkweekChange(presetId);
     }) as EventListener);
   }
 
-  private async handleRenderCommand(viewId: string, direction?: 'left' | 'right'): Promise<void> {
+  private async handleRenderCommand(viewId: string): Promise<void> {
     this.currentViewId = viewId;
-
-    if (direction) {
-      await this.animator.slide(direction, () => this.render());
-    } else {
-      await this.render();
-    }
-
+    await this.render();
     this.emitStatus('rendered', { viewId });
   }
 
@@ -121,6 +122,15 @@ export class CalendarApp {
     this.emitStatus('rendered', { viewId: this.currentViewId });
   }
 
+  private async handleWorkweekChange(presetId: string): Promise<void> {
+    const preset = await this.settingsService.getWorkweekPreset(presetId);
+    if (preset) {
+      this.workweekPreset = preset;
+      await this.render();
+      this.emitStatus('rendered', { viewId: this.currentViewId });
+    }
+  }
+
   private async render(): Promise<void> {
     const storedConfig = await this.viewConfigService.getById(this.currentViewId);
     if (!storedConfig) {
diff --git a/src/v2/demo/DemoApp.ts b/src/v2/demo/DemoApp.ts
index 78c2293..c7083cd 100644
--- a/src/v2/demo/DemoApp.ts
+++ b/src/v2/demo/DemoApp.ts
@@ -41,12 +41,13 @@ export class DemoApp {
     this.setupNavigation();
     this.setupDrawerToggle();
     this.setupViewSwitching();
+    this.setupWorkweekSelector();
 
     // Listen for calendar status events
     this.setupStatusListeners();
 
     // Initial render
-    this.emitRenderCommand(this.currentView);
+    this.eventBus.emit(CoreEvents.CALENDAR_CMD_RENDER, { viewId: this.currentView });
   }
 
   private setupNavigation(): void {
@@ -69,7 +70,7 @@ export class DemoApp {
         const view = (chip as HTMLElement).dataset.view;
         if (view) {
           this.currentView = view;
-          this.emitRenderCommand(view);
+          this.eventBus.emit(CoreEvents.CALENDAR_CMD_RENDER, { viewId: view });
         }
       });
     });
@@ -77,10 +78,18 @@ export class DemoApp {
 
   private setupDrawerToggle(): void {
     document.getElementById('btn-drawer')!.onclick = () => {
-      this.container.dispatchEvent(new CustomEvent('calendar:cmd:drawer:toggle'));
+      this.eventBus.emit(CoreEvents.CALENDAR_CMD_DRAWER_TOGGLE);
     };
   }
 
+  private setupWorkweekSelector(): void {
+    const workweekSelect = document.getElementById('workweek-select') as HTMLSelectElement;
+    workweekSelect?.addEventListener('change', () => {
+      const presetId = workweekSelect.value;
+      this.eventBus.emit(CoreEvents.CALENDAR_CMD_WORKWEEK_CHANGE, { presetId });
+    });
+  }
+
   private setupStatusListeners(): void {
     this.container.addEventListener('calendar:status:ready', () => {
       console.log('[DemoApp] Calendar ready');
@@ -95,9 +104,4 @@ export class DemoApp {
     }) as EventListener);
   }
 
-  private emitRenderCommand(viewId: string, direction?: 'left' | 'right'): void {
-    this.container.dispatchEvent(new CustomEvent('calendar:cmd:render', {
-      detail: { viewId, direction }
-    }));
-  }
 }