Remember power profile choices per power source across reboots

Explicit profile selections from the power panel or menu are now saved
under an ac/battery key in ~/.local/state/omarchy/powerprofiles and
reapplied on boot and on plug/unplug. Only successful, user-made
selections are persisted, so the performance/balanced defaults still
apply when nothing has been chosen.

All entry points key off the same power signal, UPower's OnBattery:
the shell reads it natively and omarchy-powerprofiles-set autodetect
queries it via busctl. This replaces the sysfs online checks, which
disagreed with the shell on desktops without power_supply entries and
lagged behind plug events on some USB-C laptops.

Plug/unplug switching moves from the udev rule into the shell's battery
service, which already receives UPower's debounced state changes, so
the udev rule and its settle-sleep workaround are gone.

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

bin/omarchy-powerprofiles-set

@@ -1,45 +1,63 @@
 #!/bin/bash
 
-# omarchy:summary=Set the power profile to the requested level, falling back to balanced
-# omarchy:args=[autodetect|ac|battery]
+# omarchy:summary=Set and remember the power profile for AC or battery use
+# omarchy:args=[autodetect|ac|battery] [power-saver|balanced|performance]
 
-action="${1-}"
+action="${1:-autodetect}"
+requested_profile="${2:-}"
 
-# Auto-detect when called with no argument: treat any Mains or USB
-# power-supply device reporting online=1 as "on AC". This handles
-# USB-C only laptops where the legacy AC device may not fire udev
-# events, and also avoids false negatives from per-port USB-C devices
-# that are present-but-empty (online=0) while another port supplies power.
-if [[ -z $action || $action == "autodetect" ]]; then
-  # On plug/unplug, udev fires the rule before sysfs `online` is updated
-  # on some laptops (notably Lenovo Yoga Pro 7 with USB-C charging). A
-  # short settle delay lets the kernel update before we read state.
-  sleep 0.3
+usage() {
+  echo "Usage: omarchy-powerprofiles-set [autodetect|ac|battery] [power-saver|balanced|performance]" >&2
+  exit 1
+}
 
-  action=battery
-  for ps in /sys/class/power_supply/*; do
-    [[ -r $ps/online && -r $ps/type ]] || continue
-    type=$(cat "$ps/type")
-    [[ $type == "Mains" || $type == "USB" ]] || continue
-    if [[ $(cat "$ps/online") == "1" ]]; then
+(( $# <= 2 )) || usage
+
+case "$action" in
+  autodetect)
+    # Use the same signal as the shell (UPower.onBattery) so every entry point
+    # saves and restores the profile under the same ac/battery key.
+    if [[ $(busctl get-property org.freedesktop.UPower /org/freedesktop/UPower org.freedesktop.UPower OnBattery 2>/dev/null) == "b true" ]]; then
+      action=battery
+    else
       action=ac
-      break
     fi
-  done
-fi
+    ;;
+  ac | battery) ;;
+  *) usage ;;
+esac
 
 mapfile -t profiles < <(powerprofilesctl list | awk '/^\s*[* ]\s*[a-zA-Z0-9\-]+:$/ { gsub(/^[*[:space:]]+|:$/,""); print }')
 
-case "$action" in
-  ac)
-    # Prefer performance, fall back to balanced
-    if [[ " ${profiles[*]} " == *" performance "* ]]; then
-      powerprofilesctl set performance
-    else
-      powerprofilesctl set balanced
-    fi
-    ;;
-  battery)
-    powerprofilesctl set balanced
-    ;;
-esac
+profile_available() {
+  [[ " ${profiles[*]} " == *" $1 "* ]]
+}
+
+state_dir="${OMARCHY_POWERPROFILES_STATE_DIR:-${XDG_STATE_HOME:-$HOME/.local/state}/omarchy/powerprofiles}"
+state_file="$state_dir/$action"
+
+if [[ -n $requested_profile ]]; then
+  profile_available "$requested_profile" || {
+    echo "Power profile is not available: $requested_profile" >&2
+    exit 1
+  }
+
+  profile="$requested_profile"
+elif [[ -r $state_file ]]; then
+  profile=$(<"$state_file")
+fi
+
+if [[ -z ${profile:-} ]] || ! profile_available "$profile"; then
+  if [[ $action == "ac" ]] && profile_available performance; then
+    profile=performance
+  else
+    profile=balanced
+  fi
+fi
+
+powerprofilesctl set "$profile" || exit
+
+if [[ -n $requested_profile ]]; then
+  mkdir -p "$state_dir"
+  printf '%s\n' "$requested_profile" >"$state_file"
+fi