初始化 proxy 打包项目，对齐 xxxig 矿工项目

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

debian/postrm

@@ -0,0 +1,30 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+    purge)
+        # Remove log directory
+        rm -rf /var/log/xxxig-proxy
+
+        # Remove config directory
+        rm -rf /etc/xxxig-proxy
+
+        # Remove user and group
+        if getent passwd xxxig-proxy >/dev/null; then
+            deluser --system xxxig-proxy 2>/dev/null || true
+        fi
+
+        if getent group xxxig-proxy >/dev/null; then
+            delgroup --system xxxig-proxy 2>/dev/null || true
+        fi
+        ;;
+
+    remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+        # Reload systemd
+        if [ -d /run/systemd/system ]; then
+            systemctl daemon-reload
+        fi
+        ;;
+esac
+
+exit 0