📝 新增完整项目文档、测试套件与构建配置

install-pngquant.ps1

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+param(
+    [switch]$Force
+)
+
+$ErrorActionPreference = "Stop"
+
+function Test-PngquantInstalled {
+    try {
+        $result = Get-Command pngquant -ErrorAction Stop
+        Write-Host "pngquant 已安装: $($result.Source)" -ForegroundColor Green
+        return $true
+    } catch {
+        Write-Host "pngquant 未安装" -ForegroundColor Yellow
+        return $false
+    }
+}
+
+function Test-ScoopInstalled {
+    try {
+        $result = Get-Command scoop -ErrorAction Stop
+        Write-Host "scoop 已安装: $($result.Source)" -ForegroundColor Green
+        return $true
+    } catch {
+        Write-Host "scoop 未安装" -ForegroundColor Yellow
+        return $false
+    }
+}
+
+function Install-Scoop {
+    Write-Host "正在安装 scoop..." -ForegroundColor Cyan
+    
+    $scoopInstallScript = "irm get.scoop.sh | iex"
+    
+    try {
+        Invoke-Expression $scoopInstallScript
+        Write-Host "scoop 安装成功" -ForegroundColor Green
+        
+        $env:Path = [System.Environment]::GetEnvironmentVariable("Path","User") + ";" + [System.Environment]::GetEnvironmentVariable("Path","Machine")
+        
+        return $true
+    } catch {
+        Write-Host "scoop 安装失败: $_" -ForegroundColor Red
+        return $false
+    }
+}
+
+function Install-Pngquant {
+    Write-Host "正在使用 scoop 安装 pngquant..." -ForegroundColor Cyan
+    
+    try {
+        scoop install pngquant
+        Write-Host "pngquant 安装成功" -ForegroundColor Green
+        return $true
+    } catch {
+        Write-Host "pngquant 安装失败: $_" -ForegroundColor Red
+        return $false
+    }
+}
+
+Write-Host "========================================" -ForegroundColor Cyan
+Write-Host "  pngquant 安装脚本" -ForegroundColor Cyan
+Write-Host "========================================" -ForegroundColor Cyan
+Write-Host ""
+
+if (Test-PngquantInstalled) {
+    Write-Host ""
+    Write-Host "pngquant 已经安装，无需重复安装。" -ForegroundColor Green
+    if (-not $Force) {
+        exit 0
+    }
+    Write-Host "使用 -Force 参数强制重新安装..." -ForegroundColor Yellow
+}
+
+Write-Host ""
+
+if (-not (Test-ScoopInstalled)) {
+    Write-Host ""
+    Write-Host "scoop 未安装，正在安装 scoop..." -ForegroundColor Yellow
+    
+    if (-not (Install-Scoop)) {
+        Write-Host ""
+        Write-Host "scoop 安装失败，请手动安装后重试。" -ForegroundColor Red
+        Write-Host "手动安装命令: irm get.scoop.sh | iex" -ForegroundColor Yellow
+        exit 1
+    }
+    
+    Write-Host ""
+    Write-Host "请重新运行此脚本以继续安装 pngquant。" -ForegroundColor Yellow
+    Write-Host "或者手动运行: scoop install pngquant" -ForegroundColor Yellow
+    exit 0
+}
+
+Write-Host ""
+
+if (Install-Pngquant) {
+    Write-Host ""
+    Write-Host "========================================" -ForegroundColor Green
+    Write-Host "  pngquant 安装完成！" -ForegroundColor Green
+    Write-Host "========================================" -ForegroundColor Green
+    
+    $pngquantPath = Get-Command pngquant -ErrorAction SilentlyContinue
+    if ($pngquantPath) {
+        Write-Host "安装路径: $($pngquantPath.Source)" -ForegroundColor Cyan
+    }
+    
+    Write-Host ""
+    Write-Host "验证安装:" -ForegroundColor Cyan
+    pngquant --version
+} else {
+    Write-Host ""
+    Write-Host "pngquant 安装失败。" -ForegroundColor Red
+    Write-Host "请尝试手动安装: scoop install pngquant" -ForegroundColor Yellow
+    exit 1
+}