view data fixes

apps/website/lib/view-models/AvatarViewModel.ts

@@ -9,21 +9,25 @@ import { AvatarViewData } from "@/lib/view-data/AvatarViewData";
  * Transforms AvatarViewData into UI-ready state with formatting and derived fields.
  */
 export class AvatarViewModel extends ViewModel {
-  // UI-specific derived fields (primitive outputs only)
-  readonly bufferBase64: string;
-  readonly contentTypeLabel: string;
-  readonly hasValidData: boolean;
+  private readonly data: AvatarViewData;
 
-  constructor(viewData: AvatarViewData) {
+  constructor(data: AvatarViewData) {
     super();
+    this.data = data;
+  }
 
-    // Buffer is already base64 encoded in ViewData
-    this.bufferBase64 = viewData.buffer;
+  /** UI-specific: Buffer is already base64 encoded in ViewData */
+  get bufferBase64(): string {
+    return this.data.buffer;
+  }
 
-    // Derive content type label using Display Object
-    this.contentTypeLabel = AvatarDisplay.formatContentType(viewData.contentType);
+  /** UI-specific: Derive content type label using Display Object */
+  get contentTypeLabel(): string {
+    return AvatarDisplay.formatContentType(this.data.contentType);
+  }
 
-    // Derive validity check using Display Object
-    this.hasValidData = AvatarDisplay.hasValidData(viewData.buffer, viewData.contentType);
+  /** UI-specific: Derive validity check using Display Object */
+  get hasValidData(): boolean {
+    return AvatarDisplay.hasValidData(this.data.buffer, this.data.contentType);
   }
 }