Add display scale presets with revert confirmation

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

bin/omarchy-cn-display-scale

@@ -0,0 +1,58 @@
+#!/bin/bash
+# omarchy:summary=Apply a display scale preset with 15s revert confirmation
+# omarchy:args=<1.0|1.25|1.5|1.6|1.75|2.0>
+# omarchy:examples=omarchycn display scale 1.6
+
+set -euo pipefail
+
+preset="${1:?usage: omarchycn display scale <1.0|1.25|1.5|1.6|1.75|2.0>}"
+
+case "$preset" in
+1.0 | 1.25 | 1.5 | 1.6 | 1.75 | 2.0) ;;
+*)
+  echo "Unknown preset: $preset (supported: 1.0 1.25 1.5 1.6 1.75 2.0)" >&2
+  exit 1
+  ;;
+esac
+
+monitors="$HOME/.config/hypr/monitors.lua"
+if [[ ! -f $monitors ]]; then
+  omarchy-refresh-config hypr/monitors.lua
+fi
+
+gdk=$(printf '%.0f' "$preset")
+backup="$monitors.omarchycn-prev"
+cp "$monitors" "$backup"
+
+sed -i -E \
+  -e "s|^local omarchy_monitor_scale = .*|local omarchy_monitor_scale = $preset|" \
+  -e "s|^local omarchy_gdk_scale = .*|local omarchy_gdk_scale = $gdk|" \
+  "$monitors"
+
+if ! grep -q "omarchy_monitor_scale = $preset" "$monitors"; then
+  mv "$backup" "$monitors"
+  echo "monitors.lua has no omarchy_monitor_scale line; reverted, edit it manually" >&2
+  exit 1
+fi
+
+echo "Monitor scale: $preset, GDK scale: $gdk"
+
+if command -v hyprctl > /dev/null 2>&1 && hyprctl reload > /dev/null 2>&1; then
+  if [[ -t 0 ]]; then
+    echo "15 秒内按 y 保留新缩放，超时或按其他键自动恢复"
+    if read -r -t 15 -n 1 answer && [[ $answer == "y" ]]; then
+      rm -f "$backup"
+      echo "已保留"
+    else
+      mv "$backup" "$monitors"
+      hyprctl reload > /dev/null 2>&1
+      echo "已恢复原缩放"
+      exit 0
+    fi
+  else
+    rm -f "$backup"
+  fi
+else
+  rm -f "$backup"
+  echo "Hyprland 未运行，重登录后生效"
+fi