Release v3.0.0

- Bump version to 3.0.0 and update docs

- Fix Debian payload to include TUI and install /usr/bin/sensorpajen-tui wrapper

- Make systemd unit upgrades safer and ignore deb build artifacts

scripts/verify-deb.sh

@@ -136,7 +136,7 @@ echo ""
 # Show package contents
 echo "Package contents:"
 echo "======================================================================"
-dpkg-deb -c "$DEB_FILE" | head -20
+dpkg-deb -c "$DEB_FILE" | sed -n '1,20p'
 TOTAL_FILES=$(dpkg-deb -c "$DEB_FILE" | wc -l)
 if [ $TOTAL_FILES -gt 20 ]; then
     echo "... and $(($TOTAL_FILES - 20)) more files"