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/package.json

@@ -27,6 +27,7 @@
     "fast-json-patch": "^3.1.1",
     "fuse.js": "^7.1.0",
     "pinia": "^3.0.4",
+    "qrcode": "^1.5.4",
     "vue": "^3.5.24",
     "vue-i18n": "^11.3.0",
     "vue-router": "^4.6.3"
@@ -35,6 +36,7 @@
     "@playwright/test": "^1.58.2",
     "@types/d3": "^7.4.3",
     "@types/node": "^24.10.0",
+    "@types/qrcode": "^1.5.6",
     "@vite-pwa/assets-generator": "^1.0.2",
     "@vitejs/plugin-vue": "^6.0.1",
     "@vitest/coverage-v8": "^3.2.4",