feat: install on Windows PowerShell

README.md

@@ -66,11 +66,19 @@ The official [Agent Skills evaluation guide](https://agentskills.io/skill-creati
 
 Install with the script:
 
+**macOS / Linux**:
+
 ```bash
 curl -fsSL https://raw.githubusercontent.com/alibaba/skill-up/main/install.sh | bash
 ```
 
-The installer downloads the matching binary from [GitHub Releases](https://github.com/alibaba/skill-up/releases).
+**Windows (PowerShell)**:
+
+```powershell
+irm https://raw.githubusercontent.com/alibaba/skill-up/main/install.ps1 | iex
+```
+
+The installer downloads the matching binary from [GitHub Releases](https://github.com/alibaba/skill-up/releases). Set `SKILL_UP_VERSION` to pin a release and `INSTALL_DIR` to override the install location.
 
 To build locally from a checkout, install [Go](https://go.dev/dl/) 1.25 or later:
 

README.zh.md

@@ -66,11 +66,19 @@
 
 使用安装脚本：
 
+**macOS / Linux**：
+
 ```bash
 curl -fsSL https://raw.githubusercontent.com/alibaba/skill-up/main/install.sh | bash
 ```
 
-安装脚本会从 [GitHub Releases](https://github.com/alibaba/skill-up/releases) 下载当前平台对应的二进制文件。
+**Windows（PowerShell）**：
+
+```powershell
+irm https://raw.githubusercontent.com/alibaba/skill-up/main/install.ps1 | iex
+```
+
+安装脚本会从 [GitHub Releases](https://github.com/alibaba/skill-up/releases) 下载当前平台对应的二进制文件。可通过 `SKILL_UP_VERSION` 指定版本，通过 `INSTALL_DIR` 覆盖安装目录。
 
 如需从仓库 checkout 后本地构建，需要安装 [Go](https://go.dev/dl/) 1.25 或更高版本：
 

install.ps1

@@ -0,0 +1,126 @@
+#Requires -Version 5.1
+[CmdletBinding()]
+param()
+
+$ErrorActionPreference = 'Stop'
+[Net.ServicePointManager]::SecurityProtocol = `
+    [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
+
+$Repo = 'alibaba/skill-up'
+$Project = 'skill-up'
+$RequestedVersion = if ($env:SKILL_UP_VERSION) { $env:SKILL_UP_VERSION } else { 'latest' }
+$InstallDir = if ($env:INSTALL_DIR) {
+    $env:INSTALL_DIR
+} else {
+    Join-Path $env:LOCALAPPDATA 'Programs\skill-up'
+}
+
+function Get-Arch {
+    $a = if ($env:PROCESSOR_ARCHITEW6432) { $env:PROCESSOR_ARCHITEW6432 } else { $env:PROCESSOR_ARCHITECTURE }
+    switch -Regex ($a) {
+        '^(AMD64|x86_64)$' { return 'amd64' }
+        '^(ARM64|aarch64)$' { return 'arm64' }
+    }
+    throw "unsupported architecture: $a"
+}
+
+function Get-LatestTag {
+    $url = "https://github.com/$Repo/releases/latest"
+    $req = [System.Net.HttpWebRequest]::Create($url)
+    $req.AllowAutoRedirect = $false
+    $req.Method = 'HEAD'
+    try {
+        $resp = $req.GetResponse()
+    } catch [System.Net.WebException] {
+        $resp = $_.Exception.Response
+        if (-not $resp) { throw }
+    }
+    try {
+        $location = $resp.Headers['Location']
+    } finally {
+        $resp.Close()
+    }
+    if (-not $location) { throw "unable to resolve latest tag from $url" }
+    return ($location -split '/tag/')[-1]
+}
+
+function Test-Checksum {
+    param(
+        [Parameter(Mandatory)] [string] $File,
+        [Parameter(Mandatory)] [string] $ChecksumsFile
+    )
+    $name = [System.IO.Path]::GetFileName($File)
+    $expected = $null
+    foreach ($line in Get-Content -LiteralPath $ChecksumsFile) {
+        $parts = $line -split '\s+', 2
+        if ($parts.Count -eq 2 -and $parts[1].Trim() -eq $name) {
+            $expected = $parts[0].ToLowerInvariant()
+            break
+        }
+    }
+    if (-not $expected) {
+        throw "no checksum entry for $name in $ChecksumsFile"
+    }
+    $actual = (Get-FileHash -Algorithm SHA256 -LiteralPath $File).Hash.ToLowerInvariant()
+    if ($actual -ne $expected) {
+        throw "checksum mismatch for ${name} (expected $expected, got $actual)"
+    }
+}
+
+$arch = Get-Arch
+$os = 'windows'
+
+$tag = $RequestedVersion
+if ($tag -eq 'latest') {
+    $tag = Get-LatestTag
+} elseif (-not $tag.StartsWith('v')) {
+    $tag = "v$tag"
+}
+$version = $tag.TrimStart('v')
+
+$archive = "${Project}_${version}_${os}_${arch}.zip"
+$baseUrl = "https://github.com/$Repo/releases/download/$tag"
+$archiveUrl = "$baseUrl/$archive"
+$checksumsUrl = "$baseUrl/${Project}_${version}_checksums.txt"
+
+$tmpDir = New-Item -ItemType Directory -Force -Path `
+    (Join-Path $env:TEMP "skill-up-install-$([guid]::NewGuid().ToString('N'))")
+
+try {
+    $archivePath = Join-Path $tmpDir $archive
+    $checksumsPath = Join-Path $tmpDir 'checksums.txt'
+
+    Write-Host "Downloading $archiveUrl"
+    Invoke-WebRequest -Uri $archiveUrl -OutFile $archivePath -UseBasicParsing
+
+    Write-Host 'Downloading checksums'
+    Invoke-WebRequest -Uri $checksumsUrl -OutFile $checksumsPath -UseBasicParsing
+    Test-Checksum -File $archivePath -ChecksumsFile $checksumsPath
+
+    Expand-Archive -LiteralPath $archivePath -DestinationPath $tmpDir -Force
+
+    if (-not (Test-Path -LiteralPath $InstallDir)) {
+        New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
+    }
+
+    $binaryName = "$Project.exe"
+    $src = Join-Path $tmpDir $binaryName
+    $dest = Join-Path $InstallDir $binaryName
+    Copy-Item -LiteralPath $src -Destination $dest -Force
+
+    Write-Host "Installed $binaryName to $InstallDir"
+} finally {
+    Remove-Item -LiteralPath $tmpDir -Recurse -Force -ErrorAction SilentlyContinue
+}
+
+$pathEntries = ($env:Path -split ';') | Where-Object { $_ }
+if ($pathEntries -notcontains $InstallDir) {
+    Write-Host ''
+    Write-Host "$InstallDir is not in PATH. Add it for the current session with:"
+    Write-Host ''
+    Write-Host "  `$env:Path = `"$InstallDir;`$env:Path`""
+    Write-Host ''
+    Write-Host 'Or persist it for your user account with:'
+    Write-Host ''
+    Write-Host "  [Environment]::SetEnvironmentVariable('Path', `"$InstallDir;`" + [Environment]::GetEnvironmentVariable('Path', 'User'), 'User')"
+}