fix(sway): visible focus ring, floating modifier, volume binds

swayfx: with `border pixel` the visible line is child_border, not `border`
(which only paints title bars). Focused child_border was $base00 = black on
black, i.e. invisible; both are now the same gray.

keybinds: restore `floating_modifier $mod normal` (was `none`) and drop the
`pkill -RTMIN+10 i3blocks` tail from the volume binds -- i3blocks is not in
use, waybar is.

windows: drop a stray trailing semicolon; waybar: remove the unused
sway/submap module.

.config/sway/config.d/keybinds

@@ -14,8 +14,8 @@ bindsym $mod+d exec $menu
 # Change normal to inverse to use left mouse button for resizing and right
 # mouse button for dragging.
 # DISABLED 2026-09-28: experiment for windows popping out (accidental mod+click)
-#floating_modifier $mod normal
-floating_modifier none
+floating_modifier $mod normal
+#floating_modifier none
 
 # Reload the configuration file
 bindsym $mod+Shift+c reload
@@ -128,14 +128,11 @@ bindsym $mod+bracketright exec playerctl next
 bindsym $mod+backslash exec playerctl play-pause
 
 
-bindsym XF86AudioRaiseVolume exec pactl set-sink-volume @DEFAULT_SINK@ +5% \
-	&& pkill -RTMIN+10 i3blocks;
+bindsym XF86AudioRaiseVolume exec pactl set-sink-volume @DEFAULT_SINK@ +5%
 
-bindsym XF86AudioLowerVolume exec pactl set-sink-volume @DEFAULT_SINK@ -5% \
-	&& pkill -RTMIN+10 i3blocks;
+bindsym XF86AudioLowerVolume exec pactl set-sink-volume @DEFAULT_SINK@ -5%
 
-bindsym XF86AudioMute exec pactl set-sink-mute @DEFAULT_SINK@ toggle \
-	&& pkill -RTMIN+10 i3blocks;
+bindsym XF86AudioMute exec pactl set-sink-mute @DEFAULT_SINK@ toggle
 
 bindsym XF86AudioMicMute exec pactl set-source-mute @DEFAULT_SOURCE@ toggle