Rename Debian package from skyview to skyview-adsb

The official Debian repositories already contain a package named
"skyview" which is associated with NASA's SkyView Virtual Observatory
(https://skyview.gsfc.nasa.gov/), a tool for astronomical data
visualization.

To avoid package naming conflicts and potential confusion for users,
this commit renames our ADS-B aircraft tracking application package
to "skyview-adsb". This clearly indicates the package's purpose
(ADS-B tracking) while maintaining the SkyView brand identity.

Changes:
- Package name: skyview → skyview-adsb
- System user/group: skyview → skyview-adsb
- Config directory: /etc/skyview → /etc/skyview-adsb
- Data directory: /var/lib/skyview → /var/lib/skyview-adsb
- Log directory: /var/log/skyview → /var/log/skyview-adsb
- Systemd service: skyview.service → skyview-adsb.service
- Documentation path: /usr/share/doc/skyview → /usr/share/doc/skyview-adsb

The binaries (/usr/bin/skyview and /usr/bin/beast-dump) remain
unchanged as they don't conflict at the filesystem level.

This ensures clean installation alongside any existing skyview
packages and prevents apt/dpkg conflicts during installation.

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

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

debian/usr/share/doc/skyview-adsb/README.Debian

@@ -0,0 +1,125 @@
+SkyView for Debian
+==================
+
+SkyView is a multi-source ADS-B aircraft tracker that connects to dump1090 Beast
+format TCP streams and provides a web-based interface for aircraft tracking.
+
+Configuration
+------------
+
+The main configuration file is located at:
+  /etc/skyview/config.json
+
+This file contains:
+- Server configuration (port, host)
+- List of dump1090 sources to connect to
+- Application settings
+
+Example configuration for multiple receivers:
+
+```json
+{
+  "server": {
+    "host": "",
+    "port": 8080
+  },
+  "sources": [
+    {
+      "id": "site1",
+      "name": "Site 1 Receiver",
+      "host": "192.168.1.100",
+      "port": 30005,
+      "latitude": 51.4700,
+      "longitude": -0.4600,
+      "altitude": 50.0,
+      "enabled": true
+    },
+    {
+      "id": "site2", 
+      "name": "Site 2 Receiver",
+      "host": "192.168.1.101",
+      "port": 30005,
+      "latitude": 51.4800,
+      "longitude": -0.4500,
+      "altitude": 45.0,
+      "enabled": true
+    }
+  ],
+  "settings": {
+    "history_limit": 1000,
+    "stale_timeout": 60,
+    "update_rate": 1
+  }
+}
+```
+
+Service Management
+-----------------
+
+SkyView runs as a systemd service. Use these commands to manage it:
+
+  # Start the service
+  sudo systemctl start skyview
+
+  # Stop the service  
+  sudo systemctl stop skyview
+
+  # Restart the service
+  sudo systemctl restart skyview
+
+  # Enable auto-start on boot
+  sudo systemctl enable skyview
+
+  # Disable auto-start on boot
+  sudo systemctl disable skyview
+
+  # Check service status
+  sudo systemctl status skyview
+
+  # View logs
+  sudo journalctl -u skyview -f
+
+Web Interface
+------------
+
+Once started, the web interface is available at:
+  http://localhost:8080
+
+The interface provides:
+- Real-time aircraft tracking map
+- Aircraft table with filtering and sorting
+- Statistics dashboard
+- Coverage and signal strength visualization
+- 3D radar view (optional)
+
+Files and Directories
+--------------------
+
+  /usr/bin/skyview              - Main executable
+  /etc/skyview/config.json      - Configuration file
+  /var/lib/skyview/             - Application data directory
+  /var/log/skyview/             - Log files
+  /lib/systemd/system/skyview.service - Systemd service file
+
+Security
+--------
+
+SkyView runs as the unprivileged 'skyview' user for security. The service has
+restricted capabilities and filesystem access.
+
+Troubleshooting
+--------------
+
+1. Check service status:
+   sudo systemctl status skyview
+
+2. View recent logs:
+   sudo journalctl -u skyview --no-pager -l
+
+3. Test configuration:
+   sudo -u skyview /usr/bin/skyview -config /etc/skyview/config.json
+
+4. Check network connectivity to dump1090 sources:
+   telnet <host> <port>
+
+For more information, visit: https://github.com/skyview/skyview