chore: apply code quality improvements and linting fixes

- Remove remaining console.log statements and replace with comments
- Add ESLint disable comments for intentionally unused variables
- Improve code formatting and style consistency
- Fix remaining linting violations for better CI compliance

app/javascript/dashboard/components/widgets/conversation/MessagePreview.vue

@@ -70,6 +70,7 @@ export default {
       if (direction) {
         return direction === 'inbound';
       }
+      return false;
     },
     // Get normalized call status
     callStatus() {
@@ -290,4 +291,3 @@ export default {
     </template>
   </div>
 </template>
-