feat: add one-command plugin deployment and removal

deploy/install.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+REPO_URL=${PLUGIN_REPO_URL:-https://git.awaioi.com/awaioi/sub2api-add.git}
+SOURCE_DIR=${PLUGIN_SOURCE_DIR:-/opt/sub2api-add}
+REF=${PLUGIN_REF:-main}
+
+die() { printf '错误：%s\n' "$*" >&2; exit 1; }
+[[ $EUID -eq 0 ]] || die "请使用 root 或 sudo 运行"
+command -v git >/dev/null 2>&1 || die "缺少 git"
+
+if [[ -e "$SOURCE_DIR" && ! -d "$SOURCE_DIR/.git" ]]; then
+  die "$SOURCE_DIR 已存在但不是本插件仓库；请设置 PLUGIN_SOURCE_DIR"
+fi
+
+if [[ -d "$SOURCE_DIR/.git" ]]; then
+  if [[ -n "$(git -C "$SOURCE_DIR" status --porcelain)" ]]; then
+    die "$SOURCE_DIR 有未提交修改，先清理后再升级"
+  fi
+  git -C "$SOURCE_DIR" fetch --depth 1 origin "$REF"
+  git -C "$SOURCE_DIR" checkout --force FETCH_HEAD
+else
+  git clone --depth 1 --branch "$REF" "$REPO_URL" "$SOURCE_DIR"
+fi
+
+exec "$SOURCE_DIR/scripts/install-local.sh" "$@"