Clean up orphaned voxtype status processes on exit (#5345)

* Clean up orphaned voxtype status processes on exit

Waybar's custom/voxtype module runs omarchy-voxtype-status, which spawns
a long-lived `voxtype status --follow` child. When Waybar reloads (config
change, display hotplug, Hyprland reload), it kills the wrapper but the
child survives as an orphan. Over time dozens accumulate.

`trap 'kill 0' EXIT` signals the entire process group when the wrapper
exits, ensuring the voxtype child is cleaned up.

* Explain purpose of trap

---------

Co-authored-by: David Heinemeier Hansson <david@hey.com>

bin/omarchy-voxtype-status

@@ -1,5 +1,8 @@
 #!/bin/bash
 
+# Clean up the voxtype --follow child when Waybar reloads
+trap 'kill 0' EXIT
+
 if omarchy-cmd-present voxtype; then
   voxtype status --follow --extended --format json | while read -r line; do
     echo "$line" | jq -c '. + {alt: .class}'