feat: 对齐 xxxig/proxy 打包规范并迁移配置至 /etc/mond

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

debian/prerm

@@ -1,36 +1,18 @@
 #!/bin/sh
 set -e
 
-case "$1" in
-    upgrade)
-        # 升级时只停止服务，保留 enabled 状态
-        if [ -d /run/systemd/system ]; then
-            if systemctl is-active --quiet mond.service; then
-                echo "Stopping mond service for upgrade..."
-                systemctl stop mond.service
-            fi
-        fi
-        ;;
-    remove|deconfigure)
-        # 删除时停止并禁用服务
-        if [ -d /run/systemd/system ]; then
-            if systemctl is-active --quiet mond.service; then
-                echo "Stopping mond service..."
-                systemctl stop mond.service
-            fi
-            if systemctl is-enabled --quiet mond.service 2>/dev/null; then
-                echo "Disabling mond service..."
-                systemctl disable mond.service
-            fi
-        fi
-        ;;
-    failed-upgrade)
-        # 升级失败时不做操作
-        ;;
-    *)
-        echo "prerm called with unknown argument \`$1'" >&2
-        exit 1
-        ;;
-esac
+# 仅在卸载(remove)时停用服务；升级(upgrade)时保持运行，
+# 由 postinst 的 try-restart 重启以加载新二进制
+if [ "$1" = "remove" ] && [ -d /run/systemd/system ]; then
+    if systemctl is-active --quiet mond.service; then
+        echo "Stopping mond service..."
+        systemctl stop mond.service
+    fi
+
+    if systemctl is-enabled --quiet mond.service 2>/dev/null; then
+        echo "Disabling mond service..."
+        systemctl disable mond.service
+    fi
+fi
 
 exit 0