diff --git a/.github/workflows/build-client.yml b/.github/workflows/build-client.yml
index 3f454a2..7cdf8a6 100644
--- a/.github/workflows/build-client.yml
+++ b/.github/workflows/build-client.yml
@@ -369,7 +369,6 @@ jobs:
       LOCALAPPDATA: C:\Users\admin\runner\windows\cache\ci-localappdata
       APPDATA: C:\Users\admin\runner\windows\cache\ci-appdata
       npm_config_cache: C:\Users\admin\runner\windows\cache\ci-npm
-      npm_config_store_dir: C:\Users\admin\runner\windows\cache\ci-pnpm-store
       RUNNER_TOOL_CACHE: C:\Users\admin\runner\windows\cache\ci-toolcache
     steps:
       - uses: actions/checkout@v4
@@ -441,6 +440,12 @@ jobs:
       - name: 装 pnpm（npm 装 JS 版，绕开 standalone 二进制）
         shell: pwsh
         run: |
+          # 前面几次尝试在 node 目录里留下过 pnpm/pnpx 的影子文件，npm 会以
+          # EEXIST 拒绝覆盖，先清掉（node 目录在 RUNNER_TOOL_CACHE 下，可写）。
+          $nodeDir = Split-Path (Get-Command node).Source
+          foreach ($n in 'pnpm', 'pnpx', 'pnpm.cmd', 'pnpx.cmd', 'pnpm.ps1', 'pnpx.ps1') {
+            Remove-Item (Join-Path $nodeDir $n) -Force -ErrorAction SilentlyContinue
+          }
           npm install -g pnpm@12.8.1
           if ($LASTEXITCODE -ne 0) { throw "npm 装 pnpm 失败（exit $LASTEXITCODE）" }
           "pnpm = $((Get-Command pnpm).Source)"