feat: deploy-to-target supports .253 + mesh/federation/VPN updates

- Add deploy_secondary() function for deploying to multiple LAN nodes
- --both now deploys to .198 and .253 (previously .198 only)
- Fleet deploy updated for 3 LAN nodes
- Mesh DM fixes: protocol frame format, DM-via-channel routing
- Federation pending requests, discover modal
- VPN status UI improvements
- Image versions and container specs updates

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

neode-ui/src/views/settings/VpnStatusSection.vue

@@ -70,7 +70,7 @@ onMounted(fetchVpnStatus)
     <div v-else-if="vpnStatus?.connected" class="grid grid-cols-2 gap-3">
       <div class="bg-white/5 rounded-lg px-3 py-2">
         <div class="text-xs text-white/50 mb-1">Provider</div>
-        <div class="text-sm font-medium text-white/90">{{ vpnStatus.provider || 'nostr-vpn' }}</div>
+        <div class="text-sm font-medium text-white/90">{{ vpnStatus.provider || 'wireguard' }}</div>
       </div>
       <div class="bg-white/5 rounded-lg px-3 py-2">
         <div class="text-xs text-white/50 mb-1">Peers</div>