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/scripts/setup-boot.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -e
+
+echo "Setting up production (boat) environment..."
+
+# Copy .env if not exists
+if [ ! -f .env ]; then
+  cp .env.example .env
+  echo "Created .env – please edit SPOTIFY_NAME, BOAT_NAME, BOAT_MMSI"
+fi
+
+# Create music directory
+mkdir -p music
+
+# Init pipes (persistent on boat)
+PIPE_DIR=/tmp/audio bash scripts/init-pipes.sh
+
+echo ""
+echo "Edit .env then run 'make boot' to start."
+echo "Dashboard: http://<boat-ip>:8080"
+echo ""
+echo "IMPORTANT: Review docker-compose.yml and uncomment:"
+echo "  - /dev/ttyUSB0 for NMEA hardware"
+echo "  - /dev/snd for zone audio output"
+echo "  - /dev/dri for hardware video decoding"