website refactor

apps/website/lib/contracts/builders/ViewDataBuilder.ts

@@ -0,0 +1,25 @@
+/**
+ * ViewData Builder Contract
+ * 
+ * Purpose: Transform ViewModels into ViewData for templates
+ * 
+ * Rules:
+ * - Deterministic and side-effect free
+ * - No HTTP/API calls
+ * - Input: ViewModel
+ * - Output: ViewData (JSON-serializable)
+ * - Must be in lib/builders/view-data/
+ * - Must be named *ViewDataBuilder
+ * - Must have 'use client' directive
+ * - Must implement static build() method
+ */
+
+export interface ViewDataBuilder<TInput, TOutput> {
+  /**
+   * Transform ViewModel into ViewData
+   * 
+   * @param viewModel - Client-side ViewModel
+   * @returns ViewData for template
+   */
+  build(viewModel: TInput): TOutput;
+}