Enable independent screensaver effects on multi-monitor setups (#3781)

Updated the `omarchy-cmd-screensaver` script to allow screensaver effects to run independently on each monitor in multi-display configurations.

Previously, the effect loop waited for all animations on all monitors to finish before starting the next effect. With this change, each monitor handles its own effect cycle independently, improving smoothness and responsiveness in multi-monitor setups.

bin/omarchy-cmd-screensaver

@@ -20,13 +20,15 @@ printf '\033]11;rgb:00/00/00\007'  # Set background color to black
 
 hyprctl keyword cursor:invisible true &>/dev/null
 
+tty=$(tty 2>/dev/null)
+
 while true; do
   tte -i ~/.config/omarchy/branding/screensaver.txt \
     --frame-rate 120 --canvas-width 0 --canvas-height 0 --reuse-canvas --anchor-canvas c --anchor-text c\
     --random-effect --exclude-effects dev_worm \
     --no-eol --no-restore-cursor &
 
-  while pgrep -x tte >/dev/null; do
+  while pgrep -t "${tty#/dev/}" -x tte >/dev/null; do
     if read -rsn1 -t 1 || ! screensaver_in_focus; then
       exit_screensaver
     fi