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scripts/build-backend.ps1

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+# 寸进后端打包部署脚本
+# 用法: .\scripts\build-backend.ps1 [platform]
+# platform: windows (默认) | linux | all
+
+param([string]$Platform = "windows")
+
+$root = Split-Path -Parent $PSScriptRoot
+$serverDir = Join-Path $root "server"
+$outputDir = Join-Path $root "build"
+$version = "1.0.0"
+$commit = git -C $root rev-parse --short HEAD 2>$null
+if (-not $commit) { $commit = "dev" }
+
+$ldflags = "-s -w -X main.version=$version -X main.commit=$commit"
+
+function Build-Platform {
+    param([string]$GOOS, [string]$GOARCH, [string]$suffix)
+    $outName = "inchstep-api$suffix"
+    $outPath = Join-Path $outputDir $outName
+
+    Write-Host "Building for $GOOS/$GOARCH ..." -ForegroundColor Cyan
+    $env:GOOS = $GOOS
+    $env:GOARCH = $GOARCH
+    $env:CGO_ENABLED = 0
+
+    Push-Location $serverDir
+    $result = & go build -buildvcs=false -ldflags $ldflags -o $outPath ./cmd/api 2>&1
+    Pop-Location
+
+    if ($LASTEXITCODE -eq 0) {
+        $size = (Get-Item $outPath).Length / 1KB
+        Write-Host "  OK: $outPath ($([math]::Round($size, 1)) KB)" -ForegroundColor Green
+    } else {
+        Write-Host "  FAIL: $result" -ForegroundColor Red
+    }
+}
+
+New-Item -ItemType Directory -Force -Path $outputDir | Out-Null
+
+switch ($Platform) {
+    "windows" { Build-Platform "windows" "amd64" ".exe" }
+    "linux"   { Build-Platform "linux"   "amd64" "" }
+    "all"     {
+        Build-Platform "windows" "amd64" ".exe"
+        Build-Platform "linux"   "amd64" ""
+        Build-Platform "linux"   "arm64" "-arm64"
+    }
+    default   { Build-Platform "windows" "amd64" ".exe" }
+}
+
+Write-Host "Build complete. Output directory: $outputDir" -ForegroundColor Green