统一 musl 全静态构建，规范 Dockerfile 与产物命名

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

script/README.md

@@ -235,7 +235,7 @@ xxxigDaemon -c /etc/xxxig/config.json
 curl -I https://gitea.bcde.io
 
 # 手动下载测试
-curl -O https://gitea.bcde.io/api/packages/wangdefa/generic/xxxig/6.26.0/xxxig-amd64-ubuntu-6.26.0.tar.gz
+curl -O https://gitea.bcde.io/api/packages/wangdefa/generic/xxxig/6.26.0/xxxig-amd64-linux-static-6.26.0.tar.gz
 ```
 
 **问题: 服务无法启动**

script/install.sh

@@ -323,7 +323,8 @@ main() {
     [[ "$version" == "latest" ]] && version=$(get_gitea_latest_version)
 
     local pkg_version="${version#v}" # registry 包版本为数字，去掉可能的 v 前缀
-    download_url="https://${GITEA_SERVER}/api/packages/${GITEA_OWNER}/generic/${PACKAGE_NAME}/${pkg_version}/${PACKAGE_NAME}-$(get_arch)-$os_type-${pkg_version}.tar.gz"
+    # 产物统一为 musl 全静态（linux-static），不再区分 distro；os_type 仅用于下方服务管理(OpenRC/systemd)
+    download_url="https://${GITEA_SERVER}/api/packages/${GITEA_OWNER}/generic/${PACKAGE_NAME}/${pkg_version}/${PACKAGE_NAME}-$(get_arch)-linux-static-${pkg_version}.tar.gz"
 
     log "$BLUE" "配置信息:"
     echo "  版本: $version"