Make migrations faster to skip if they've already been run

migrations/1751225707.sh

@@ -1,4 +1,6 @@
 echo "Fixing persistent workspaces in waybar config"
-sed -i 's/"persistent_workspaces":/"persistent-workspaces":/' ~/.config/waybar/config
-pkill waybar
-setsid waybar >/dev/null 2>&1 &
+
+if [[ -f ~/.config/waybar/config ]]; then
+  sed -i 's/"persistent_workspaces":/"persistent-workspaces":/' ~/.config/waybar/config
+  pkill -SIGUSR2 waybar
+fi