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>

docker/lnd-ui/Dockerfile

@@ -2,6 +2,8 @@ FROM docker.io/library/nginx:alpine
 
 # Copy the HTML file
 COPY index.html /usr/share/nginx/html/
+COPY tailwind.css /usr/share/nginx/html/
+COPY qrcode.js /usr/share/nginx/html/
 
 # Create directories for assets
 RUN mkdir -p /usr/share/nginx/html/assets/img/app-icons && \
@@ -10,6 +12,7 @@ RUN mkdir -p /usr/share/nginx/html/assets/img/app-icons && \
 # Copy assets
 COPY lnd.svg /usr/share/nginx/html/assets/img/app-icons/
 COPY bg-web5.jpg /usr/share/nginx/html/assets/img/
+COPY bg-intro.jpg /usr/share/nginx/html/assets/img/
 
 # Copy nginx config
 COPY nginx.conf /etc/nginx/conf.d/default.conf