feat: add NIP-07 signing consent modal with remember-per-app support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

neode-ui/src/components/AppLauncherOverlay.vue

@@ -161,11 +161,23 @@
       </div>
     </Transition>
   </Teleport>
+
+  <!-- Nostr signing consent modal -->
+  <NostrSignConsent
+    :show="store.showConsent"
+    :app-name="store.consentRequest?.appName ?? ''"
+    :method="store.consentRequest?.method ?? ''"
+    :event-kind="store.consentRequest?.eventKind"
+    :content="store.consentRequest?.content"
+    @approve="store.approveConsent"
+    @deny="store.denyConsent"
+  />
 </template>
 
 <script setup lang="ts">
 import { ref, watch, onMounted, onBeforeUnmount } from 'vue'
 import { useAppLauncherStore } from '@/stores/appLauncher'
+import NostrSignConsent from '@/components/NostrSignConsent.vue'
 import { rpcClient } from '@/api/rpc-client'
 
 interface PaymentRequest {