Enhance MerchantStore component with user store creation flow

- Introduce an empty state for users without a store, prompting them to create one.
- Implement computed property to check if the user has a store based on their order history.
- Update store statistics to reflect only the user's orders.
- Add a placeholder function for future store creation functionality.

These changes improve user experience by guiding new merchants to set up their stores effectively.

src/modules/market/components/MerchantStore.vue

@@ -1,23 +1,40 @@
 <template>
   <div class="space-y-6">
-    <!-- Header -->
-    <div class="flex items-center justify-between">
-      <div>
-        <h2 class="text-2xl font-bold text-foreground">My Store</h2>
-        <p class="text-muted-foreground mt-1">Manage incoming orders and your products</p>
-      </div>
-      <div class="flex items-center gap-3">
-        <Button @click="navigateToMarket" variant="outline">
-          <Store class="w-4 h-4 mr-2" />
-          Browse Market
-        </Button>
-        <Button @click="addProduct" variant="default">
-          <Plus class="w-4 h-4 mr-2" />
-          Add Product
-        </Button>
+    <!-- No Store Empty State -->
+    <div v-if="!userHasStore" class="flex flex-col items-center justify-center py-12">
+      <div class="w-24 h-24 bg-muted rounded-full flex items-center justify-center mb-6">
+        <Store class="w-12 h-12 text-muted-foreground" />
       </div>
+      <h2 class="text-2xl font-bold text-foreground mb-2">Create Your Store</h2>
+      <p class="text-muted-foreground text-center mb-6 max-w-md">
+        You don't have a store yet. Set up your merchant profile to start selling products on the Nostr marketplace.
+      </p>
+      <Button @click="createStore" variant="default" size="lg">
+        <Plus class="w-5 h-5 mr-2" />
+        Create My Store
+      </Button>
     </div>
 
+    <!-- Store Content (shown when user has a store) -->
+    <div v-else>
+      <!-- Header -->
+      <div class="flex items-center justify-between">
+        <div>
+          <h2 class="text-2xl font-bold text-foreground">My Store</h2>
+          <p class="text-muted-foreground mt-1">Manage incoming orders and your products</p>
+        </div>
+        <div class="flex items-center gap-3">
+          <Button @click="navigateToMarket" variant="outline">
+            <Store class="w-4 h-4 mr-2" />
+            Browse Market
+          </Button>
+          <Button @click="addProduct" variant="default">
+            <Plus class="w-4 h-4 mr-2" />
+            Add Product
+          </Button>
+        </div>
+      </div>
+
     <!-- Store Stats -->
     <div class="grid grid-cols-1 md:grid-cols-4 gap-6">
       <!-- Incoming Orders -->
@@ -295,6 +312,7 @@
         </div>
       </div>
     </div>
+    </div> <!-- End of Store Content wrapper -->
   </div>
 </template>
 
@@ -332,29 +350,60 @@ const nostrmarketService = injectService(SERVICE_TOKENS.NOSTRMARKET_SERVICE) as
 const isGeneratingInvoice = ref<string | null>(null)
 
 // Computed properties
+const userHasStore = computed(() => {
+  // Check if user has any store/stall set up
+  // For now, we'll check if they have ever been a seller on any order
+  const currentUserPubkey = auth.currentUser?.value?.pubkey
+  if (!currentUserPubkey) return false
+  
+  // TODO: In the future, this should check if user has created a stall
+  // For now, we'll show the create store prompt if they have no incoming orders
+  const hasIncomingOrders = Object.values(marketStore.orders).some(order => 
+    order.sellerPubkey === currentUserPubkey
+  )
+  return hasIncomingOrders
+})
+
 const incomingOrders = computed(() => {
-  // For now, show all orders as "incoming" since we don't have merchant filtering yet
-  // In a real implementation, this would filter orders where the current user is the seller
+  // Filter orders to only show those where the current user is the seller
+  const currentUserPubkey = auth.currentUser?.value?.pubkey
+  if (!currentUserPubkey) return []
+  
   return Object.values(marketStore.orders)
-    .filter(order => order.status === 'pending')
+    .filter(order => order.sellerPubkey === currentUserPubkey && order.status === 'pending')
     .sort((a, b) => b.createdAt - a.createdAt)
 })
 
 const storeStats = computed(() => {
-  const orders = Object.values(marketStore.orders)
+  const currentUserPubkey = auth.currentUser?.value?.pubkey
+  if (!currentUserPubkey) {
+    return {
+      incomingOrders: 0,
+      pendingOrders: 0,
+      paidOrders: 0,
+      totalSales: 0,
+      totalProducts: 0,
+      activeProducts: 0,
+      satisfaction: 0,
+      totalReviews: 0
+    }
+  }
+  
+  // Filter orders to only count those where current user is the seller
+  const myOrders = Object.values(marketStore.orders).filter(o => o.sellerPubkey === currentUserPubkey)
   const now = Date.now() / 1000
   const thirtyDaysAgo = now - (30 * 24 * 60 * 60)
 
   return {
-    incomingOrders: orders.filter(o => o.status === 'pending').length,
-    pendingOrders: orders.filter(o => o.status === 'pending').length,
-    paidOrders: orders.filter(o => o.status === 'paid').length,
-    totalSales: orders
+    incomingOrders: myOrders.filter(o => o.status === 'pending').length,
+    pendingOrders: myOrders.filter(o => o.status === 'pending').length,
+    paidOrders: myOrders.filter(o => o.status === 'paid').length,
+    totalSales: myOrders
       .filter(o => o.status === 'paid' && o.createdAt > thirtyDaysAgo)
       .reduce((sum, o) => sum + o.total, 0),
     totalProducts: 0, // TODO: Implement product management
     activeProducts: 0, // TODO: Implement product management
-    satisfaction: 95, // TODO: Implement review system
+    satisfaction: userHasStore.value ? 95 : 0, // TODO: Implement review system
     totalReviews: 0 // TODO: Implement review system
   }
 })
@@ -527,6 +576,11 @@ const addProduct = () => {
   console.log('Adding new product')
 }
 
+const createStore = () => {
+  // TODO: Implement store creation flow
+  console.log('Create store functionality to be implemented')
+}
+
 const navigateToMarket = () => router.push('/market')
 const viewAllOrders = () => router.push('/market-dashboard?tab=orders')
 const generateBulkInvoices = () => console.log('Generate bulk invoices')

src/modules/market/components/OrderHistory.vue

@@ -278,7 +278,15 @@ const statusFilter = ref('')
 const sortBy = ref('createdAt')
 
 // Computed properties
-const allOrders = computed(() => Object.values(marketStore.orders))
+const allOrders = computed(() => {
+  // Filter orders to only show those where the current user is the buyer
+  const currentUserPubkey = auth.currentUser?.value?.pubkey
+  if (!currentUserPubkey) return []
+  
+  return Object.values(marketStore.orders).filter(order => 
+    order.buyerPubkey === currentUserPubkey
+  )
+})
 
 const filteredOrders = computed(() => {
   if (!statusFilter.value) return allOrders.value