diff --git a/README.md b/README.md
index 7f23e92..f4dc98d 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ pnpm db:postgres:validate
 python tests/test_upload_skill.py
 ```
 
-修改内置 Agent 上传 Skill 后，运行 `powershell -ExecutionPolicy Bypass -File scripts/package-upload-skill.ps1` 更新 `skill-packages/upload-delivery-desk-work.zip`。
+修改内置 Agent 上传 Skill 后，运行 `powershell -ExecutionPolicy Bypass -File scripts/package-upload-skill.ps1` 更新 `skill-packages/upload-delivery-desk-work.zip`。该 ZIP 可直接上传到 Skill 安装器，根目录必须直接包含 `SKILL.md`。
 
 更多资料：
 
diff --git a/docs/operator-runbook.md b/docs/operator-runbook.md
index dc78c50..9406302 100644
--- a/docs/operator-runbook.md
+++ b/docs/operator-runbook.md
@@ -60,7 +60,7 @@ python tests/test_upload_skill.py
 powershell -ExecutionPolicy Bypass -File scripts/package-upload-skill.ps1
 ```
 
-打包脚本会先运行回归测试，再生成 `skill-packages/upload-delivery-desk-work.zip`。计划文件写入已忽略的 `tmp/`；接口或层级变化后必须同步更新 Skill、测试和分发包。
+打包脚本会先运行回归测试，再生成 `skill-packages/upload-delivery-desk-work.zip`，并校验 ZIP 根目录直接包含 `SKILL.md`。计划文件写入已忽略的 `tmp/`；接口或层级变化后必须同步更新 Skill、测试和分发包。
 
 ## 数据备份与恢复
 
diff --git a/scripts/package-upload-skill.ps1 b/scripts/package-upload-skill.ps1
index 9c6ba1c..c6d6b25 100644
--- a/scripts/package-upload-skill.ps1
+++ b/scripts/package-upload-skill.ps1
@@ -38,7 +38,20 @@ Add-Type -AssemblyName System.IO.Compression.FileSystem
   $sourcePath,
   $packagePath,
   [System.IO.Compression.CompressionLevel]::Optimal,
-  $true
+  $false
 )
 
+$archive = [System.IO.Compression.ZipFile]::OpenRead($packagePath)
+try {
+  $entries = @($archive.Entries | ForEach-Object { $_.FullName.Replace('\', '/') })
+  if ($entries -notcontains 'SKILL.md') {
+    throw 'Packaged Skill must contain SKILL.md at the ZIP root.'
+  }
+  if ($entries | Where-Object { $_ -like "$skillName/*" }) {
+    throw 'Packaged Skill contains an extra top-level directory.'
+  }
+} finally {
+  $archive.Dispose()
+}
+
 Write-Output $packagePath
diff --git a/skill-packages/upload-delivery-desk-work.zip b/skill-packages/upload-delivery-desk-work.zip
index 37ed241..4361fbf 100644
Binary files a/skill-packages/upload-delivery-desk-work.zip and b/skill-packages/upload-delivery-desk-work.zip differ