feat: add FT1 factory test host and protocol updates

factory_host/build_release.ps1

@@ -0,0 +1,21 @@
+param(
+    [string]$Output = "dist"
+)
+
+$ErrorActionPreference = "Stop"
+$root = Split-Path -Parent $MyInvocation.MyCommand.Path
+python -c "import PyInstaller" 2>$null
+if ($LASTEXITCODE -ne 0) {
+    throw "未找到 PyInstaller。先执行: python -m pip install pyinstaller pyserial"
+}
+
+$outDir = Join-Path $root $Output
+New-Item -ItemType Directory -Force -Path $outDir | Out-Null
+python -m PyInstaller --noconfirm --clean --onefile --windowed `
+    --name EG800FactoryHost `
+    --distpath $outDir `
+    --workpath (Join-Path $root ".pyinstaller-work") `
+    --specpath (Join-Path $root ".pyinstaller-spec") `
+    (Join-Path $root "factory_host.py")
+Copy-Item (Join-Path $root "factory_host_config.json") $outDir -Force
+Write-Host "输出: $(Join-Path $outDir 'EG800FactoryHost.exe')"