Remove build artifacts from repository and improve Debian package installation

- Remove debian/usr/bin/beast-dump from git tracking (build artifact)
- Add debian/usr/bin/* to .gitignore to prevent future binary commits
- Update postinst script for quiet installation:
  - Add --quiet flags to adduser/addgroup commands
  - Suppress output from directory creation and permission setting
  - Smart service handling: restart if enabled, leave disabled otherwise
  - Remove verbose installation messages
- Binaries are now built only during package creation, not stored in repo

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

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

debian/DEBIAN/postinst

@@ -5,44 +5,34 @@ case "$1" in
     configure)
         # Create skyview user and group if they don't exist
         if ! getent group skyview >/dev/null 2>&1; then
-            addgroup --system skyview
+            addgroup --system --quiet skyview
         fi
         
         if ! getent passwd skyview >/dev/null 2>&1; then
             adduser --system --ingroup skyview --home /var/lib/skyview \
-                    --no-create-home --disabled-password skyview
+                    --no-create-home --disabled-password --quiet skyview
         fi
         
         # Create directories with proper permissions
-        mkdir -p /var/lib/skyview
-        mkdir -p /var/log/skyview
-        chown skyview:skyview /var/lib/skyview
-        chown skyview:skyview /var/log/skyview
-        chmod 755 /var/lib/skyview
-        chmod 755 /var/log/skyview
+        mkdir -p /var/lib/skyview /var/log/skyview >/dev/null 2>&1 || true
+        chown skyview:skyview /var/lib/skyview /var/log/skyview >/dev/null 2>&1 || true
+        chmod 755 /var/lib/skyview /var/log/skyview >/dev/null 2>&1 || true
         
         # Set permissions on config files
         if [ -f /etc/skyview/config.json ]; then
-            chown root:skyview /etc/skyview/config.json
-            chmod 640 /etc/skyview/config.json
+            chown root:skyview /etc/skyview/config.json >/dev/null 2>&1 || true
+            chmod 640 /etc/skyview/config.json >/dev/null 2>&1 || true
         fi
         
         
-        # Install systemd service but do not enable or start it
-        systemctl daemon-reload
+        # Handle systemd service
+        systemctl daemon-reload >/dev/null 2>&1 || true
         
-        echo "SkyView has been installed successfully."
-        echo ""
-        echo "Configuration:"
-        echo "  - Main config: /etc/skyview/config.json"
-        echo ""
-        echo "To start SkyView:"
-        echo "  sudo systemctl enable skyview"
-        echo "  sudo systemctl start skyview"
-        echo ""
-        echo "Binaries installed:"
-        echo "  - skyview: Main ADS-B tracker server"
-        echo "  - beast-dump: Beast protocol data dump utility"
+        # Check if service was previously enabled
+        if systemctl is-enabled skyview >/dev/null 2>&1; then
+            # Service was enabled, restart it
+            systemctl restart skyview >/dev/null 2>&1 || true
+        fi
         ;;
 esac