[Sync] Lua Hyprland chain, licence cleanup

gui/.local/bin/wbar

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+# wbar — run the custom waybar rig (layouts/custom.jsonc + custom.css) as a
+# supervised systemd user service, and control it.
+#
+# Why a service: waybar 0.15.0 segfaults when the LG 4K drops its DisplayPort
+# link on power-off (output removed) and again when it comes back (output
+# re-added). Launched as a bare scope nothing relaunched it, so the bar was gone
+# every morning. As a transient *service* with Restart=always systemd brings it
+# back after RestartSec, at both ends of the cycle. StartLimitIntervalSec=0 keeps
+# systemd from giving up while the monitor is gone and Hyprland sits on its
+# headless fallback output (the default limit of 5 starts per 10 s would
+# reproduce the original "stays dead" behavior). RestartSec=3 keeps that
+# potential loop cheap; `systemctl --user show dots-waybar.service -p NRestarts`
+# after a night says how many restarts a sleep cycle really costs.
+#
+# The unit is dots-owned on purpose. HyDE's own bar unit
+# (hyde-$XDG_SESSION_DESKTOP-bar.service) is masked on rig hosts (README.md) so
+# waybar.py can never spawn a second, plain bar — reusing that name would need
+# the mask lifted. Under a different name HyDE keeps seeing "no bar", exactly as
+# before.
+#
+# Because a killed waybar now comes straight back, every killall-based control
+# goes through here:
+#   wbar            restart (what the old `wbar` abbr did)   also: hc.start.bar
+#   wbar toggle     Ctrl+Alt+W
+#   wbar reload     re-read config + CSS in place (SIGUSR2), no restart
+#   wbar start|stop|status
+set -euo pipefail
+
+unit="dots-waybar.service"
+cfg="$HOME/.config/waybar/layouts/custom.jsonc"
+css="$HOME/.config/waybar/layouts/custom.css"
+
+active() { systemctl --user is-active --quiet "$unit"; }
+
+start() {
+  active && return 0
+  systemctl --user reset-failed "$unit" 2>/dev/null || true
+  # A service gets the user manager's environment, not Hyprland's. Forward the
+  # session vars app2unit forwards for HyDE's own units, plus GTK scaling
+  # (GDK_SCALE=1 is what keeps the bar sized right on the 1.25-scaled output).
+  local -a env=()
+  local v
+  for v in XDG_VTNR XDG_SEAT XDG_SEAT_PATH XDG_SESSION_ID XDG_SESSION_PATH GDK_SCALE GDK_DPI_SCALE; do
+    [ -n "${!v:-}" ] && env+=("--setenv=$v=${!v}")
+  done
+  systemd-run --user --quiet --collect \
+    --unit="$unit" --slice=app-graphical.slice --description="waybar (dots custom rig)" \
+    --property=Type=exec --property=ExitType=cgroup \
+    --property=Restart=always --property=RestartSec=3 --property=StartLimitIntervalSec=0 \
+    --property=After=graphical-session.target --property=PartOf=graphical-session.target \
+    "${env[@]}" -- waybar -c "$cfg" -s "$css"
+}
+
+case "${1:-restart}" in
+  start) start ;;
+  stop) systemctl --user stop "$unit" ;;
+  restart)
+    if active; then systemctl --user restart "$unit"; else start; fi
+    ;;
+  toggle)
+    if active; then systemctl --user stop "$unit"; else start; fi
+    ;;
+  reload) systemctl --user kill -s SIGUSR2 "$unit" ;;
+  status) systemctl --user status --no-pager "$unit" ;;
+  *)
+    echo "usage: wbar [start|stop|restart|toggle|reload|status]  (default: restart)" >&2
+    exit 2
+    ;;
+esac