feat: placeholder images, Nostr inbox, order lookup, SEO, bigger logo

- 5 SVG placeholder product images (minimal dark style with watermark initials)
- Seed data updated to reference .svg placeholders
- Nostr DM inbox in admin (Messages tab) with shop npub display
- GET /api/admin/nostr-info endpoint for shop pubkey
- My Orders page: customers look up orders by NIP-07 Nostr identity
- GET /api/orders/by-pubkey/:pubkey endpoint with hex validation
- SeoMeta component for OG/Twitter meta tags
- SEO meta on HomeView and ProductView
- Base OG meta tags in index.html
- "My Orders" link in shop header nav
- Splash logo doubled in size on desktop (680px max)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/views/MyOrdersView.vue

@@ -0,0 +1,91 @@
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { api } from '@/api/client'
+import { useNostr } from '@/composables/useNostr'
+import type { Order } from '@shared/types'
+import StatusBadge from '@/components/ui/StatusBadge.vue'
+import SatsDisplay from '@/components/ui/SatsDisplay.vue'
+import GlassButton from '@/components/ui/GlassButton.vue'
+import LoadingSpinner from '@/components/ui/LoadingSpinner.vue'
+
+const { pubkey, hasExtension, connectExtension } = useNostr()
+const orders = ref<Order[]>([])
+const isLoading = ref(false)
+
+async function fetchOrders() {
+  if (!pubkey.value) return
+  isLoading.value = true
+  try {
+    const res = await api.get(`/api/orders/by-pubkey/${pubkey.value}`)
+    if (res.ok) orders.value = await api.json<Order[]>(res)
+  } finally {
+    isLoading.value = false
+  }
+}
+
+onMounted(() => {
+  if (pubkey.value) fetchOrders()
+})
+
+async function handleConnect() {
+  await connectExtension()
+  if (pubkey.value) fetchOrders()
+}
+</script>
+
+<template>
+  <div class="my-orders">
+    <h1>My Orders</h1>
+    <p class="subtitle">Look up your orders using your Nostr identity.</p>
+
+    <div v-if="!pubkey" class="connect-prompt glass-card">
+      <p>Connect your Nostr identity to view your order history.</p>
+      <div class="actions">
+        <GlassButton v-if="hasExtension" @click="handleConnect">Connect Extension (NIP-07)</GlassButton>
+        <p v-else class="hint">Install a NIP-07 browser extension (like nos2x or Alby) to connect.</p>
+      </div>
+    </div>
+
+    <div v-else>
+      <LoadingSpinner v-if="isLoading" />
+      <div v-else-if="orders.length === 0" class="empty">
+        <p>No orders found for this Nostr identity.</p>
+      </div>
+      <div v-else class="orders-list">
+        <router-link
+          v-for="order in orders"
+          :key="order.id"
+          :to="`/order/${order.id}`"
+          class="order-row glass-card"
+        >
+          <div class="order-meta">
+            <code class="order-id">{{ order.id.slice(0, 12) }}...</code>
+            <time>{{ new Date(order.createdAt).toLocaleDateString() }}</time>
+          </div>
+          <div class="order-info">
+            <span>{{ order.items.reduce((s, i) => s + i.quantity, 0) }} items</span>
+            <SatsDisplay :sats="order.totalSats" />
+            <StatusBadge :status="order.status" />
+          </div>
+        </router-link>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.25rem; }
+.subtitle { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 1.5rem; }
+.connect-prompt { text-align: center; }
+.connect-prompt p { color: var(--text-secondary); margin-bottom: 1rem; }
+.actions { display: flex; justify-content: center; gap: 0.75rem; }
+.hint { color: var(--text-muted); font-size: 0.8125rem; }
+.empty { text-align: center; padding: 3rem 0; color: var(--text-muted); }
+.orders-list { display: flex; flex-direction: column; gap: 1rem; }
+.order-row { display: flex; justify-content: space-between; align-items: center; text-decoration: none; color: inherit; cursor: pointer; }
+.order-row:hover { border-color: var(--glass-highlight); transform: translateY(-1px); }
+.order-meta { display: flex; flex-direction: column; gap: 0.25rem; }
+.order-id { font-size: 0.8125rem; color: var(--accent); }
+.order-meta time { font-size: 0.75rem; color: var(--text-muted); }
+.order-info { display: flex; align-items: center; gap: 1rem; font-size: 0.875rem; }
+</style>