Add twilio softphone with integrated AI assistant

frontend/layouts/default.vue

@@ -2,6 +2,7 @@
 import { ref } from 'vue'
 import AppSidebar from '@/components/AppSidebar.vue'
 import AIChatBar from '@/components/AIChatBar.vue'
+import SoftphoneDialog from '@/components/SoftphoneDialog.vue'
 import {
   Breadcrumb,
   BreadcrumbItem,
@@ -75,6 +76,9 @@ const breadcrumbs = computed(() => {
 
       <!-- AI Chat Bar Component -->
       <AIChatBar />
+
+      <!-- Softphone Dialog (Global) -->
+      <SoftphoneDialog />
     </SidebarInset>
   </SidebarProvider>
 </template>