fix screensaver exit behavior on multiple monitors (#1249)

bin/omarchy-cmd-screensaver

@@ -1,4 +1,11 @@
 #!/bin/bash
+function exit_screensaver {
+  pkill -x tte 2>/dev/null
+  pkill -f "alacritty --class Screensaver" 2>/dev/null
+  exit 0
+}
+
+trap exit_screensaver SIGINT SIGTERM SIGHUP SIGQUIT
 
 while true; do
   effect=$(tte 2>&1 | grep -oP '{\K[^}]+' | tr ',' ' ' | tr ' ' '\n' | sed -n '/^beams$/,$p' | sort -u | shuf -n1)
@@ -8,9 +15,7 @@ while true; do
 
   while pgrep -x tte >/dev/null; do
     if read -n 1 -t 0.01; then
-      pkill -x tte 2>/dev/null
-      pkill -f "alacritty --class Screensaver" 2>/dev/null
-      exit 0
+      exit_screensaver
     fi
   done
 done