ci: 增加构建环境ci脚本；

.gitea/workflows/reusable-prepare-workspace.yml

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+name: Reusable Prepare Workspace
+
+on:
+  workflow_call:
+    inputs:
+      repo_url:
+        description: "Git 仓库地址"
+        required: true
+        type: string
+      git_sha:
+        description: "目标提交 SHA"
+        required: true
+        type: string
+      node_major:
+        description: "Node 主版本（例如 22）"
+        required: false
+        type: string
+        default: "22"
+      node_version:
+        description: "Node 精确版本（例如 22.12.0，优先于 node_major）"
+        required: false
+        type: string
+        default: ""
+      yarn_version:
+        description: "Yarn 版本（例如 stable 或 1.22.22）"
+        required: false
+        type: string
+        default: "stable"
+      nodejs_mirror:
+        description: "Node 二进制镜像地址"
+        required: false
+        type: string
+        default: "https://npmmirror.com/mirrors/node"
+      npm_registry:
+        description: "NPM 镜像地址"
+        required: false
+        type: string
+        default: "https://registry.npmmirror.com"
+      node_install_root:
+        description: "Node 安装缓存目录"
+        required: false
+        type: string
+        default: "$HOME/.local/node-ci"
+      run_commands:
+        description: "准备完成后执行的额外命令（多行 shell）"
+        required: false
+        type: string
+        default: ""
+
+jobs:
+  prepare:
+    runs-on: ubuntu-latest
+    env:
+      REPO_URL: ${{ inputs.repo_url }}
+      GIT_SHA: ${{ inputs.git_sha }}
+      NODE_MAJOR: ${{ inputs.node_major }}
+      NODE_VERSION: ${{ inputs.node_version }}
+      YARN_VERSION: ${{ inputs.yarn_version }}
+      NODEJS_MIRROR: ${{ inputs.nodejs_mirror }}
+      NPM_REGISTRY: ${{ inputs.npm_registry }}
+      NODE_INSTALL_ROOT: ${{ inputs.node_install_root }}
+      RUN_COMMANDS: ${{ inputs.run_commands }}
+    steps:
+      - name: Prepare workspace (checkout + node/yarn)
+        run: |
+          set -euo pipefail
+
+          resolve_node_version() {
+            if [ -n "${NODE_VERSION}" ]; then
+              echo "${NODE_VERSION#v}"
+              return
+            fi
+
+            local resolved
+            resolved="$(curl -fsSL "${NODEJS_MIRROR}/index.tab" | awk -F'\t' -v major="${NODE_MAJOR}" '
+              NR > 1 && $1 ~ ("^v" major "\\.") { print substr($1, 2); exit }
+            ')"
+            if [ -z "${resolved}" ]; then
+              echo "failed to resolve latest Node ${NODE_MAJOR}.x from ${NODEJS_MIRROR}"
+              exit 1
+            fi
+            echo "${resolved}"
+          }
+
+          detect_arch() {
+            case "$(uname -m)" in
+              x86_64) echo "x64" ;;
+              aarch64 | arm64) echo "arm64" ;;
+              *)
+                echo "unsupported architecture: $(uname -m)"
+                exit 1
+                ;;
+            esac
+          }
+
+          install_node() {
+            local target_version="$1"
+            local arch name url tarball install_dir bindir
+            arch="$(detect_arch)"
+            name="node-v${target_version}-linux-${arch}"
+            url="${NODEJS_MIRROR}/v${target_version}/${name}.tar.xz"
+            tarball="/tmp/${name}.tar.xz"
+            install_dir="${NODE_INSTALL_ROOT}/${name}"
+            bindir="${install_dir}/bin"
+
+            if [ ! -x "${bindir}/node" ]; then
+              mkdir -p "${NODE_INSTALL_ROOT}"
+              curl -fsSL "${url}" -o "${tarball}"
+              tar -xJf "${tarball}" -C "${NODE_INSTALL_ROOT}"
+              rm -f "${tarball}"
+            fi
+
+            export PATH="${bindir}:${PATH}"
+          }
+
+          ensure_node() {
+            local target_version node_version
+            target_version="$(resolve_node_version)"
+
+            if command -v node >/dev/null 2>&1; then
+              node_version="$(node -v | sed 's/^v//')"
+              if [ "${node_version}" = "${target_version}" ]; then
+                return
+              fi
+            fi
+
+            install_node "${target_version}"
+
+            node_version="$(node -v | sed 's/^v//')"
+            if [ "${node_version}" != "${target_version}" ]; then
+              echo "failed to switch to Node ${target_version}, current=${node_version}"
+              exit 1
+            fi
+          }
+
+          if [ ! -d .git ]; then
+            git clone "${REPO_URL}" .
+          fi
+
+          git fetch --all --tags --prune
+          git checkout -f "${GIT_SHA}"
+
+          ensure_node
+
+          npm config set registry "${NPM_REGISTRY}" >/dev/null 2>&1 || true
+
+          if ! command -v yarn >/dev/null 2>&1; then
+            corepack enable
+            export COREPACK_NPM_REGISTRY="${NPM_REGISTRY}"
+            corepack prepare "yarn@${YARN_VERSION}" --activate
+          fi
+
+          echo "Node: $(node -v)"
+          echo "Yarn: $(yarn -v)"
+
+      - name: Run extra commands
+        if: ${{ inputs.run_commands != '' }}
+        run: |
+          set -euo pipefail
+          printf '%s\n' "${RUN_COMMANDS}" > /tmp/reusable-prepare-run.sh
+          chmod +x /tmp/reusable-prepare-run.sh
+          /tmp/reusable-prepare-run.sh