client: Windows 客户端（WinUI3 壳 + agent-core；调试用 Electron 壳存档）；localserver token 改为常数时间比较

client/ui/Packaging/precheck.ps1

@@ -0,0 +1,31 @@
+# EveryPublish Windows 构建前环境自检（PowerShell）
+Write-Host "=== EveryPublish Windows 构建自检 ===" -ForegroundColor Cyan
+
+function Check($name, $cmd) {
+    try {
+        $out = Invoke-Expression $cmd 2>&1 | Out-String
+        $first = ($out.Trim() -split "`n")[0]
+        Write-Host "[OK] $name : $first" -ForegroundColor Green
+        return $true
+    } catch {
+        Write-Host "[FAIL] $name 未安装或不可用" -ForegroundColor Red
+        return $false
+    }
+}
+
+$ok = $true
+$ok = (Check "dotnet SDK" "dotnet --version") -and $ok
+$ok = (Check "Go 工具链" "go version") -and $ok
+
+# 版本校验：.NET 需 8.x，Go 需 1.23+
+$dotnetVer = (dotnet --version 2>$null)
+if ($dotnetVer -and -not $dotnetVer.StartsWith("8.")) {
+    Write-Host "[WARN] dotnet 版本 $dotnetVer，建议 .NET 8 SDK" -ForegroundColor Yellow
+}
+
+if (-not $ok) {
+    Write-Host "请先安装依赖（见 client/ui/README.md）后重试" -ForegroundColor Red
+    exit 1
+}
+
+Write-Host "环境就绪：可运行 Packaging\build-installer.ps1 打包" -ForegroundColor Green