feat(ui): dual-ecash wallet settings, buy-peer-files, seed backup, assorted fixes

- Tabbed Wallet Settings modal (Cashu + Fedimint) and dual-balance wallet card
- Buy a peer's paid file (ecash / node Lightning / on-chain / external QR)
- Recovery-phrase reveal + backup section; onboarding seed retry resilience
- NetBird HTTPS launch, remote-control two-finger scroll + external-open
- Shared BackButton, single-v version label, mesh Bitcoin header toggles

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

neode-ui/src/views/apps/AppCard.vue

@@ -49,7 +49,7 @@
             class="inline-flex items-center px-1.5 py-0.5 rounded text-[10px] font-semibold bg-orange-500/20 text-orange-300 border border-orange-500/30"
           >Update</span>
         </div>
-        <p class="text-sm text-white/50">{{ version ? `v${version}` : '' }}</p>
+        <p class="text-sm text-white/50">{{ version ? $ver(version) : '' }}</p>
         <p v-if="author" class="text-xs text-white/40 mt-0.5">{{ author }}</p>
       </div>
     </div>
@@ -122,7 +122,7 @@
         v-if="pkg['available-update'] && pkg.state !== 'updating'"
         @click.stop="$emit('update', id)"
         class="px-3 py-2 rounded-lg text-sm font-medium flex items-center justify-center gap-1.5 bg-orange-500/20 border border-orange-500/40 text-orange-200 hover:bg-orange-500/30 transition-colors"
-        :title="`Update to v${pkg['available-update']}`"
+        :title="`Update to ${$ver(pkg['available-update'])}`"
       >
         <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
           <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15" />

neode-ui/src/views/apps/appsConfig.ts

@@ -170,6 +170,8 @@ export const TAB_LAUNCH_APPS = new Set([
   'btcpay-server', 'grafana', 'photoprism', 'homeassistant',
   'vaultwarden', 'nextcloud', 'uptime-kuma', 'portainer', 'gitea',
   'cryptpad', 'nginx-proxy-manager', 'tailscale',
+  // netbird's dashboard needs HTTPS (secure context) so it opens in a new tab
+  'netbird',
 ])
 
 export function opensInTab(id: string): boolean {