fix: LND UI CSS, QR codes, services tab, wallet creation, tx filtering

- LND UI: replace cdn.tailwindcss.com with local tailwind.css (CSP fix)
- LND UI: make asset paths relative for nginx proxy compatibility
- Web5 wallet: add QR code for on-chain receive addresses (qrcode npm)
- Web5 wallet: hide incoming transactions after 3 confirmations
- Apps: add "Services" tab to separate backend containers from user apps
- Home: null guard on packages.value to prevent TypeError on load
- First-boot: auto-create Bitcoin Knots wallet (no longer auto-created)
- AppSession: add mempool-electrs to port mapping

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

neode-ui/src/views/Home.vue

@@ -485,9 +485,9 @@ watch(() => loginTransition.startWelcomeTyping, (shouldStart) => {
 }, { immediate: true })
 
 const packages = computed(() => store.packages)
-const appCount = computed(() => Object.keys(packages.value).length)
+const appCount = computed(() => Object.keys(packages.value || {}).length)
 const runningCount = computed(() =>
-  Object.values(packages.value).filter(pkg => pkg.state === PackageState.Running).length
+  Object.values(packages.value || {}).filter(pkg => pkg.state === PackageState.Running).length
 )
 
 const quickLaunchApps = [