Add Windows install script and instructions

Author: edumansky

README.md

@@ -4,10 +4,16 @@ A command-line tool for Webex APIs — Calling, Contact Center, Admin, Devices,
 
 ## Install
 
+**macOS / Linux:**
 ```bash
 curl -fsSL https://raw.githubusercontent.com/Cloverhound/webex-cli/main/install.sh | sh
 ```
 
+**Windows (PowerShell):**
+```powershell
+irm https://raw.githubusercontent.com/Cloverhound/webex-cli/main/install.ps1 | iex
+```
+
 Or download from [Releases](https://github.com/Cloverhound/webex-cli/releases).
 
 ## Quick Start

install.ps1

@@ -0,0 +1,64 @@
+# Webex CLI installer for Windows
+# Usage: irm https://raw.githubusercontent.com/Cloverhound/webex-cli/main/install.ps1 | iex
+
+$ErrorActionPreference = "Stop"
+
+$Repo = "Cloverhound/webex-cli"
+$Binary = "webex.exe"
+$InstallDir = "$env:LOCALAPPDATA\webex-cli"
+
+# Detect architecture
+$Arch = if ([Environment]::Is64BitOperatingSystem) {
+    if ($env:PROCESSOR_ARCHITECTURE -eq "ARM64") { "arm64" } else { "amd64" }
+} else {
+    Write-Error "Unsupported: 32-bit Windows is not supported"
+    return
+}
+
+# Get latest version
+Write-Host "Fetching latest release..."
+$Release = Invoke-RestMethod "https://api.github.com/repos/$Repo/releases/latest"
+$Version = $Release.tag_name -replace '^v', ''
+if (-not $Version) {
+    Write-Error "Could not determine latest version"
+    return
+}
+Write-Host "Latest version: v$Version"
+
+# Download
+$ZipName = "webex-cli_${Version}_windows_${Arch}.zip"
+$Url = "https://github.com/$Repo/releases/download/v$Version/$ZipName"
+
+$TmpDir = New-Item -ItemType Directory -Path (Join-Path $env:TEMP "webex-cli-install-$(Get-Random)")
+
+try {
+    Write-Host "Downloading $Url..."
+    Invoke-WebRequest -Uri $Url -OutFile (Join-Path $TmpDir $ZipName)
+
+    # Extract
+    Expand-Archive -Path (Join-Path $TmpDir $ZipName) -DestinationPath $TmpDir -Force
+
+    # Install
+    New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
+    Move-Item -Path (Join-Path $TmpDir $Binary) -Destination (Join-Path $InstallDir $Binary) -Force
+
+    # Add to user PATH if not already there
+    $UserPath = [Environment]::GetEnvironmentVariable("Path", "User")
+    if ($UserPath -notlike "*$InstallDir*") {
+        [Environment]::SetEnvironmentVariable("Path", "$InstallDir;$UserPath", "User")
+        $env:Path = "$InstallDir;$env:Path"
+        Write-Host "Added $InstallDir to your PATH."
+    }
+
+    Write-Host ""
+    Write-Host "Installed webex v$Version to $InstallDir\$Binary"
+    Write-Host ""
+    Write-Host "NOTE: Restart your terminal for PATH changes to take effect."
+    Write-Host ""
+    Write-Host "Get started:"
+    Write-Host "  webex config set client-id <your-client-id>      # if not using built-in defaults"
+    Write-Host "  webex config set client-secret <your-client-secret>"
+    Write-Host "  webex login"
+} finally {
+    Remove-Item -Recurse -Force $TmpDir -ErrorAction SilentlyContinue
+}

site/src/content/docs/installation.mdx

@@ -5,11 +5,19 @@ description: How to install the Webex CLI.
 
 ## Quick Install
 
+**macOS / Linux:**
 ```bash
 curl -fsSL https://raw.githubusercontent.com/Cloverhound/webex-cli/main/install.sh | sh
 ```
 
-This downloads the latest release for your platform and installs it to `/usr/local/bin/webex`.
+This downloads the latest release and installs it to `/usr/local/bin/webex`.
+
+**Windows (PowerShell):**
+```powershell
+irm https://raw.githubusercontent.com/Cloverhound/webex-cli/main/install.ps1 | iex
+```
+
+This downloads the latest release and installs it to `%LOCALAPPDATA%\webex-cli\webex.exe`, and adds it to your user PATH.
 
 ## Manual Download
 
@@ -22,6 +30,7 @@ Download the binary for your platform from the [GitHub Releases](https://github.
 | Linux | x86_64 | `webex-cli_*_linux_amd64.tar.gz` |
 | Linux | ARM64 | `webex-cli_*_linux_arm64.tar.gz` |
 | Windows | x86_64 | `webex-cli_*_windows_amd64.zip` |
+| Windows | ARM64 | `webex-cli_*_windows_arm64.zip` |
 
 ## Build from Source
 
@@ -31,7 +40,7 @@ cd webex-cli
 go build -o webex .
 ```
 
-Requires Go 1.20+.
+Requires Go 1.23+.
 
 ## Verify Installation