build: collect frontend artifacts under output

.gitignore

@@ -4,6 +4,7 @@ builds
 .builds
 bin
 out
+output/
 target
 release
 debug

scripts/build-frontend.sh

@@ -0,0 +1,102 @@
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+OUTPUT_ROOT="${PROJECT_ROOT}/output"
+
+require_command() {
+  local command_name="$1"
+
+  if ! command -v "${command_name}" >/dev/null 2>&1; then
+    echo "缺少命令：${command_name}" >&2
+    exit 1
+  fi
+}
+
+build_project() {
+  local project_name="$1"
+  local project_dir="$2"
+  local package_manager="$3"
+  local build_output_dir="$4"
+  local output_name="$5"
+  local target_dir="${OUTPUT_ROOT}/${output_name}"
+
+  if [[ ! -f "${project_dir}/package.json" ]]; then
+    echo "未找到 ${project_name} 的 package.json：${project_dir}" >&2
+    exit 1
+  fi
+
+  if [[ ! -d "${project_dir}/node_modules" ]]; then
+    echo "${project_name} 依赖尚未安装，请先在 ${project_dir} 安装依赖。" >&2
+    exit 1
+  fi
+
+  echo
+  echo "开始构建：${project_name}"
+  (
+    cd "${project_dir}"
+    case "${package_manager}" in
+      pnpm)
+        pnpm build
+        ;;
+      npm)
+        npm run build
+        ;;
+      *)
+        echo "不支持的包管理器：${package_manager}" >&2
+        exit 1
+        ;;
+    esac
+  )
+  echo "构建完成：${project_name}"
+
+  if [[ ! -d "${project_dir}/${build_output_dir}" ]]; then
+    echo "${project_name} 构建产物不存在：${project_dir}/${build_output_dir}" >&2
+    exit 1
+  fi
+
+  if [[ "${target_dir}" != "${OUTPUT_ROOT}/"* ]]; then
+    echo "拒绝清理非预期输出目录：${target_dir}" >&2
+    exit 1
+  fi
+
+  rm -rf "${target_dir}"
+  mkdir -p "${target_dir}"
+  cp -R "${project_dir}/${build_output_dir}/." "${target_dir}/"
+  echo "产物已汇总：${target_dir}"
+}
+
+require_command pnpm
+require_command npm
+
+mkdir -p "${OUTPUT_ROOT}"
+
+build_project \
+  "平台总后台" \
+  "${PROJECT_ROOT}/frontend/platform_admin" \
+  pnpm \
+  dist \
+  platform
+build_project \
+  "气站管理后台" \
+  "${PROJECT_ROOT}/frontend/gas_admin" \
+  pnpm \
+  dist \
+  gas
+build_project \
+  "配送点管理后台" \
+  "${PROJECT_ROOT}/frontend/delivery_admin" \
+  pnpm \
+  dist \
+  delivery
+build_project \
+  "和气门户首页" \
+  "${PROJECT_ROOT}/frontend/site" \
+  npm \
+  dist/client \
+  site
+
+echo
+echo "四个前端项目全部构建完成，产物目录：${OUTPUT_ROOT}"