Yabai smart-gaps. No padding if window count >= 2.

yabairc

padding_refresh_command="p=\$((\$(yabai -m query --windows --space | jq 'length') == 1 ? 0 : 12)) && \
    yabai -m config --space mouse top_padding \$p && \
    yabai -m config --space mouse bottom_padding \$p && \
    yabai -m config --space mouse left_padding \$p && \
    yabai -m config --space mouse right_padding \$p"

yabai -m signal --add event=window_created action="$padding_refresh_command"
yabai -m signal --add event=window_destroyed action="$padding_refresh_command"
yabai -m signal --add event=application_launched action="$padding_refresh_command"
yabai -m signal --add event=application_terminated action="$padding_refresh_command"