Check terminal support once and bound the window wait overall

An unsupported terminal notified once per monitor and each monitor
paid a wasted wait; check before the loop instead. The per-read
timeout also let a chatty event stream extend the wait indefinitely,
so spend the 5 seconds against one deadline.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

bin/omarchy-launch-screensaver

@@ -17,6 +17,14 @@ fi
 focused=$(omarchy-hyprland-monitor-focused)
 terminal=$(xdg-terminal-exec --print-id)
 
+case $terminal in
+*Alacritty* | *ghostty* | *foot* | *kitty*) ;;
+*)
+  omarchy-notification-send -g ✋ "Screensaver only runs in Alacritty, Foot, Ghostty, or Kitty"
+  exit 1
+  ;;
+esac
+
 hypr_focus_monitor() {
   hyprctl dispatch "hl.dsp.focus({ monitor = \"$1\" })" >/dev/null 2>&1 || hyprctl dispatch focusmonitor "$1" >/dev/null
 }
@@ -37,10 +45,10 @@ exec {events}< <(socat -U - "UNIX-CONNECT:$SOCKET")
 # hypr_exec is async and a new window maps on whatever monitor is focused at that
 # moment. Block until this monitor's screensaver actually opens before moving
 # focus on -- otherwise slow-starting terminals all pile onto the last monitor.
-# The read timeout is a safety net in case the window never appears.
+# The deadline is a safety net in case the window never appears.
 wait_for_screensaver_window() {
-  local line
-  while IFS= read -r -t 5 -u "$events" line; do
+  local line deadline=$((SECONDS + 5))
+  while ((SECONDS < deadline)) && IFS= read -r -t $((deadline - SECONDS)) -u "$events" line; do
     [[ $line == openwindow\>\>*,org.omarchy.screensaver,* ]] && return 0
   done
 }
@@ -61,10 +69,6 @@ for m in $(hyprctl monitors -j | jq -r '.[] | .name'); do
   *kitty*)
     hypr_exec kitty --class=org.omarchy.screensaver --override font_size=18 --override window_padding_width=0 -e omarchy-screensaver
     ;;
-  *)
-    omarchy-notification-send -g ✋ "Screensaver only runs in Alacritty, Foot, Ghostty, or Kitty"
-    continue
-    ;;
   esac
 
   wait_for_screensaver_window