feat(ui): encode ShockWallet deep link URL in nprofile QR

QR now encodes wallet.aiolabs.dev/sources/add?nprofile=... so scanning
opens ShockWallet with the ATM's Lightning.Pub pre-filled, handling
both new and existing users.

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

apps/machine/src/views/SupportView.vue

@@ -31,6 +31,12 @@ const lpNprofile = computed(() => {
   return nip19.nprofileEncode({ pubkey, relays })
 })
 
+// Deep link URL: opens ShockWallet with this ATM's Lightning.Pub pre-filled
+const shockwalletDeepLink = computed(() => {
+  if (!lpNprofile.value) return ''
+  return `https://wallet.aiolabs.dev/sources/add?nprofile=${encodeURIComponent(lpNprofile.value)}`
+})
+
 interface SupportPage {
   id: string
   title: string
@@ -324,13 +330,13 @@ function goBack() {
             </CardContent>
           </Card>
 
-          <!-- Lightning.Pub nprofile QR -->
+          <!-- Lightning.Pub nprofile QR (deep link to ShockWallet) -->
           <Card v-else-if="seg.type === 'lp-nprofile'" class="my-6 mx-auto max-w-xs">
             <CardContent class="flex flex-col items-center gap-3 p-6">
-              <template v-if="lpNprofile">
+              <template v-if="shockwalletDeepLink">
                 <div class="rounded-xl bg-white p-3">
                   <QrcodeVue
-                    :value="lpNprofile"
+                    :value="shockwalletDeepLink"
                     :size="180"
                     level="L"
                     render-as="svg"
@@ -338,8 +344,8 @@ function goBack() {
                     foreground="#000000"
                   />
                 </div>
-                <span class="text-xs text-muted-foreground font-mono text-center break-all px-2">
-                  {{ lpNprofile.slice(0, 32) }}...
+                <span class="text-xs text-muted-foreground text-center px-2">
+                  Scan to open ShockWallet
                 </span>
               </template>
               <template v-else>