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/build-installer.ps1

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+# EveryPublish 客户端打包脚本（Windows 上执行）
+# 产出 dist/EveryPublish-Client-<版本>-win-x64.zip：WinUI 壳 + agent-core.exe 同目录。
+param(
+    [string]$Version = "0.2.0"
+)
+$ErrorActionPreference = "Stop"
+$root = Split-Path -Parent $PSScriptRoot   # client/ui
+$dist = Join-Path $root "..\dist"
+New-Item -ItemType Directory -Force -Path $dist | Out-Null
+
+Write-Host "[1/5] 生成图标 app.ico ..."
+Add-Type -AssemblyName System.Drawing
+$assets = Join-Path $root "Assets"
+New-Item -ItemType Directory -Force -Path $assets | Out-Null
+$bmp = New-Object System.Drawing.Bitmap 32, 32
+$g = [System.Drawing.Graphics]::FromImage($bmp)
+$g.Clear([System.Drawing.Color]::FromArgb(0, 110, 255))
+$font = New-Object System.Drawing.Font("Arial", 16, [System.Drawing.FontStyle]::Bold)
+$g.DrawString("E", $font, [System.Drawing.Brushes]::White, 7, 5)
+$g.Dispose()
+$icon = [System.Drawing.Icon]::FromHandle($bmp.GetHicon())
+$fs = [System.IO.File]::Create((Join-Path $assets "app.ico"))
+$icon.Save($fs)
+$fs.Close()
+
+Write-Host "[2/5] 交叉编译 agent-core.exe (Go) ..."
+Push-Location (Join-Path $root "..\core")
+$env:GOOS = "windows"
+$env:GOARCH = "amd64"
+go build -o (Join-Path $dist "agent-core.exe") .
+Pop-Location
+
+Write-Host "[3/5] dotnet publish WinUI 壳 ..."
+$publishDir = Join-Path $dist "publish"
+Push-Location $root
+dotnet publish EveryPublish.Client.csproj -c Release -r win-x64 -p:Platform=x64 -o $publishDir
+Pop-Location
+
+Write-Host "[4/5] 组装产物 ..."
+Copy-Item (Join-Path $dist "agent-core.exe") $publishDir -Force
+Copy-Item -Recurse -Force $assets (Join-Path $publishDir "Assets")
+
+Write-Host "[5/5] 压缩 ..."
+$zip = Join-Path $dist "EveryPublish-Client-$Version-win-x64.zip"
+if (Test-Path $zip) { Remove-Item $zip -Force }
+Compress-Archive -Path (Join-Path $publishDir "*") -DestinationPath $zip -Force
+Write-Host "OK: $zip" -ForegroundColor Green