Fix screen flash when waking from sleep into the unlock screen

The lock service arms a 5s blank timer whenever the screen locks, and
input at the lock screen re-arms it. Closing the lid sprays pointer
noise over the lock surface, so the timer was routinely armed right
before suspend, froze mid-countdown, and fired moments after resume --
blanking the freshly woken unlock screen under the user.

Guard the timer with a wall-clock check: if far more time elapsed than
the interval, the countdown slept through a suspend, so take a fresh
run-up instead of blanking. This also blanks the lock screen 5s after
an untouched resume.

Two accomplices made the flash worse and hid the real bug:

- The clamshell watcher's 2s poll fired an unconditional global DPMS
  enable whenever no external monitor was active, relighting any blank
  within 2 seconds (lock-screen blanking never stuck on undocked
  laptops) and racing the resume modeset. Recovery now only wakes
  displays when it actually re-enables one.

- Every keystroke at the lock screen dispatched a redundant DPMS
  enable via omarchy-system-wake, forcing extra modesets in the
  fragile just-resumed DRM state. Brightness "on" now skips the
  dispatch when every active display is already lit.

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

bin/omarchy-brightness-display

@@ -32,6 +32,10 @@ if [[ $step == "off" ]]; then
   hyprctl dispatch 'hl.dsp.dpms({ action = "disable" })' >/dev/null 2>&1
   exit 0
 elif [[ $step == "on" ]]; then
+  # Skip the dispatch when every active display is already lit: a redundant
+  # DPMS enable right after system resume forces another modeset, which blanks
+  # the panel for a beat (visible flash at the unlock screen).
+  hyprctl monitors -j 2>/dev/null | jq -e '[.[] | select(.disabled == false)] | length > 0 and all(.dpmsStatus)' >/dev/null 2>&1 && exit 0
   hyprctl dispatch 'hl.dsp.dpms({ action = "enable" })' >/dev/null 2>&1
   exit 0
 fi

bin/omarchy-hyprland-monitor-internal

@@ -42,13 +42,14 @@ off() {
 }
 
 recover() {
-  if ! omarchy-hyprland-monitor-external-active; then
-    if omarchy-hyprland-toggle-enabled $TOGGLE; then
-      omarchy-hyprland-toggle $TOGGLE off
-    fi
+  # Runs from the clamshell watcher every few seconds, so it must be a no-op
+  # unless it actually re-enables a display: an unconditional wake here undoes
+  # lock-screen blanking and races the resume modeset into a visible flash.
+  omarchy-hyprland-monitor-external-active && return 0
+  omarchy-hyprland-toggle-enabled $TOGGLE || return 0
 
-    wake
-  fi
+  omarchy-hyprland-toggle $TOGGLE off
+  wake
 }
 
 toggle() {