Complete multi-source Beast format implementation

Major features implemented:
- Beast binary format parser with full Mode S/ADS-B decoding
- Multi-source data merger with intelligent signal-based fusion
- Advanced web frontend with 5 view modes (Map, Table, Stats, Coverage, 3D)
- Real-time WebSocket updates with sub-second latency
- Signal strength analysis and coverage heatmaps
- Debian packaging with systemd integration
- Production-ready deployment with security hardening

Technical highlights:
- Concurrent TCP clients with auto-reconnection
- CPR position decoding and aircraft identification
- Historical flight tracking with position trails
- Range circles and receiver location visualization
- Mobile-responsive design with professional UI
- REST API and WebSocket real-time updates
- Comprehensive build system and documentation

🤖 Generated with [Claude Code](https://claude.ai/code)

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

scripts/build-deb.sh

@@ -0,0 +1,98 @@
+#!/bin/bash
+set -e
+
+# Build script for creating Debian package
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+BUILD_DIR="$PROJECT_DIR/build"
+DEB_DIR="$PROJECT_DIR/debian"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+echo_info() {
+    echo -e "${GREEN}[INFO]${NC} $1"
+}
+
+echo_warn() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+echo_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+# Clean previous builds
+echo_info "Cleaning previous builds..."
+rm -rf "$BUILD_DIR"
+mkdir -p "$BUILD_DIR"
+
+# Change to project directory
+cd "$PROJECT_DIR"
+
+# Build the application
+echo_info "Building SkyView application..."
+export CGO_ENABLED=0
+export GOOS=linux
+export GOARCH=amd64
+
+go build -ldflags="-w -s -X main.version=$(git describe --tags --always --dirty)" \
+    -o "$DEB_DIR/usr/bin/skyview" \
+    ./cmd/skyview
+
+if [ $? -ne 0 ]; then
+    echo_error "Failed to build application"
+    exit 1
+fi
+
+echo_info "Built binary: $(file "$DEB_DIR/usr/bin/skyview")"
+
+# Set executable permission
+chmod +x "$DEB_DIR/usr/bin/skyview"
+
+# Get package info
+VERSION=$(grep "Version:" "$DEB_DIR/DEBIAN/control" | cut -d' ' -f2)
+PACKAGE=$(grep "Package:" "$DEB_DIR/DEBIAN/control" | cut -d' ' -f2)
+ARCH=$(grep "Architecture:" "$DEB_DIR/DEBIAN/control" | cut -d' ' -f2)
+
+DEB_FILE="${PACKAGE}_${VERSION}_${ARCH}.deb"
+
+echo_info "Creating Debian package: $DEB_FILE"
+
+# Calculate installed size
+INSTALLED_SIZE=$(du -sk "$DEB_DIR" | cut -f1)
+sed -i "s/Installed-Size:.*/Installed-Size: $INSTALLED_SIZE/" "$DEB_DIR/DEBIAN/control" 2>/dev/null || \
+    echo "Installed-Size: $INSTALLED_SIZE" >> "$DEB_DIR/DEBIAN/control"
+
+# Build the package
+dpkg-deb --build "$DEB_DIR" "$BUILD_DIR/$DEB_FILE"
+
+if [ $? -eq 0 ]; then
+    echo_info "Successfully created: $BUILD_DIR/$DEB_FILE"
+    
+    # Show package info
+    echo_info "Package information:"
+    dpkg-deb --info "$BUILD_DIR/$DEB_FILE"
+    
+    echo_info "Package contents:"
+    dpkg-deb --contents "$BUILD_DIR/$DEB_FILE"
+    
+    # Test the package (requires root)
+    if [ "$EUID" -eq 0 ]; then
+        echo_info "Testing package installation (as root)..."
+        dpkg --dry-run -i "$BUILD_DIR/$DEB_FILE"
+    else
+        echo_warn "Run as root to test package installation"
+    fi
+    
+    echo_info "Debian package build complete!"
+    echo_info "Install with: sudo dpkg -i $BUILD_DIR/$DEB_FILE"
+    echo_info "Or upload to repository for apt installation"
+else
+    echo_error "Failed to create Debian package"
+    exit 1
+fi