Initial implementation: Bordanlage boat onboard system

Complete multiroom audio + navigation dashboard:
- Docker stack: SignalK, Snapcast (4 zones), librespot, shairport-sync, Mopidy, Jellyfin, Portainer
- React 18 + Vite dashboard with nautical dark theme
- Full mock system (SignalK NMEA simulation, Snapcast zones, Mopidy player)
- Real API clients for all services with reconnect logic
- SVG instruments: Compass, WindRose, Gauge, DepthSounder, SpeedLog
- Pages: Overview, Navigation, Audio (zones/radio/library), Systems
- Dev mode runs fully without hardware (make dev)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bordanlage/docker/mopidy/Dockerfile

@@ -0,0 +1,20 @@
+FROM ghcr.io/mopidy/mopidy:latest
+
+USER root
+
+RUN pip3 install \
+  mopidy-iris \
+  mopidy-local \
+  mopidy-stream \
+  mopidy-tunein \
+  mopidy-podcast \
+  --break-system-packages
+
+# Ensure audio pipe directory exists at startup
+RUN echo '#!/bin/sh\nmkdir -p /tmp/audio\nexec "$@"' > /entrypoint-wrapper.sh \
+  && chmod +x /entrypoint-wrapper.sh
+
+USER mopidy
+
+ENTRYPOINT ["/entrypoint-wrapper.sh"]
+CMD ["mopidy", "--config", "/etc/mopidy/mopidy.conf"]