diff --git a/apps/web/docs/ZUSTAND_STORES_AUDIT.md b/apps/web/docs/ZUSTAND_STORES_AUDIT.md
index a547b04cc..069bcf866 100644
--- a/apps/web/docs/ZUSTAND_STORES_AUDIT.md
+++ b/apps/web/docs/ZUSTAND_STORES_AUDIT.md
@@ -60,8 +60,15 @@ This document lists all Zustand stores found in the codebase, their locations, p
 - **State Type**: `CartStore` (CartState)
 - **Key State**:
   - `items: CartItem[]` ✅ **UI State** (client-side cart before checkout)
+  - Actions: `addItem`, `removeItem`, `updateQuantity`, `clearCart`, `getTotal`, `getItemCount`
 - **Category**: ✅ **UI State** (appropriate for Zustand - client-side cart)
 - **Migration Priority**: Low (cart is client-side state before checkout)
+- **Analysis**: 
+  - Cart items are temporary client-side state before checkout
+  - Not domain data - cart is created client-side, not fetched from server
+  - Persisted to localStorage for user convenience
+  - No server synchronization needed until checkout
+  - ✅ **Correctly categorized as UI state**
 
 ### 5. Auth Store (`apps/web/src/features/auth/store/authStore.ts`)
 - **Export**: `useAuthStore`