website refactor

apps/website/lib/presenters/SessionPresenter.ts

@@ -0,0 +1,23 @@
+'use client';
+
+import type { AuthSessionDTO } from '@/lib/types/generated/AuthSessionDTO';
+import { SessionViewModel } from '@/lib/view-models/SessionViewModel';
+
+/**
+ * Session Presenter
+ *
+ * Converts AuthSessionDTO to SessionViewModel for client-side presentation.
+ * Pure and deterministic - no side effects.
+ */
+export class SessionPresenter {
+  /**
+   * Present session data as a view model
+   */
+  present(sessionDto: AuthSessionDTO | null): SessionViewModel | null {
+    if (!sessionDto || !sessionDto.user) {
+      return null;
+    }
+    
+    return new SessionViewModel(sessionDto.user);
+  }
+}