Add install scripts and Clash core auto-download

uninstall.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -euo pipefail
+
+Install_Dir="${CLASH_INSTALL_DIR:-/opt/clash-for-linux}"
+Service_Name="clash-for-linux"
+
+if [ "$(id -u)" -ne 0 ]; then
+	echo -e "\033[31m[ERROR] 需要 root 权限执行卸载脚本\033[0m"
+	exit 1
+fi
+
+if command -v systemctl >/dev/null 2>&1; then
+	systemctl stop "${Service_Name}.service" >/dev/null 2>&1 || true
+	systemctl disable "${Service_Name}.service" >/dev/null 2>&1 || true
+	if [ -f "/etc/systemd/system/${Service_Name}.service" ]; then
+		rm -f "/etc/systemd/system/${Service_Name}.service"
+		systemctl daemon-reload
+	fi
+fi
+
+if [ -f "/etc/default/${Service_Name}" ]; then
+	rm -f "/etc/default/${Service_Name}"
+fi
+
+if [ -f "/etc/profile.d/clash-for-linux.sh" ]; then
+	rm -f "/etc/profile.d/clash-for-linux.sh"
+fi
+
+if [ -d "$Install_Dir" ]; then
+	rm -rf "$Install_Dir"
+	echo -e "\033[32m[OK] 已移除安装目录: ${Install_Dir}\033[0m"
+else
+	echo -e "\033[33m[WARN] 未找到安装目录: ${Install_Dir}\033[0m"
+fi
+