feat: 添加便携模式和打包脚本，精简打包大小

scripts/publish-portable.cmd

@@ -0,0 +1,5 @@
+@echo off
+setlocal
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0publish-portable.ps1" %*
+exit /b %errorlevel%
+

scripts/publish-portable.ps1

@@ -0,0 +1,91 @@
+param(
+    [string]$Rid = "win-x64",
+    [bool]$SelfContained = $false,
+    [bool]$SingleFile = $true,
+    [bool]$EnableCompressionInSingleFile = $true,
+    [bool]$ReadyToRun = $false,
+    [bool]$Trim = $false,
+    [bool]$InvariantGlobalization = $false
+)
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
+$project = Join-Path $repoRoot "TimerApp.csproj"
+
+$artifactsDir = Join-Path $repoRoot "artifacts"
+$distDir = Join-Path $repoRoot "dist"
+
+New-Item -ItemType Directory -Force -Path $distDir | Out-Null
+
+$EnableCompressionInSingleFile = $EnableCompressionInSingleFile -and $SelfContained
+
+$variantParts = @()
+$variantParts += $(if ($SelfContained) { "sc" } else { "fd" })
+$variantParts += $(if ($SingleFile) { "single" } else { "multi" })
+if ($SingleFile -and $EnableCompressionInSingleFile) { $variantParts += "comp" }
+if ($ReadyToRun) { $variantParts += "r2r" }
+if ($Trim) { $variantParts += "trim" }
+if ($InvariantGlobalization) { $variantParts += "invglob" }
+$variant = ($variantParts -join "-")
+
+$defaultVariant = "fd-single"
+$publishBaseDir = Join-Path $artifactsDir "publish"
+$publishDir = Join-Path (Join-Path $publishBaseDir $Rid) $variant
+
+New-Item -ItemType Directory -Force -Path $publishDir | Out-Null
+
+$props = @(
+    "-p:SelfContained=$SelfContained",
+    "-p:PublishSingleFile=$SingleFile",
+    "-p:PublishReadyToRun=$ReadyToRun",
+    "-p:DebugType=None",
+    "-p:DebugSymbols=false"
+)
+
+if ($SingleFile) {
+    $props += "-p:IncludeNativeLibrariesForSelfExtract=true"
+    if ($SelfContained) {
+        $props += "-p:EnableCompressionInSingleFile=$EnableCompressionInSingleFile"
+    }
+}
+
+if ($Trim) {
+    $props += "-p:PublishTrimmed=true"
+    $props += "-p:TrimMode=partial"
+}
+
+if ($InvariantGlobalization) {
+    $props += "-p:InvariantGlobalization=true"
+}
+
+dotnet publish $project `
+    -c Release `
+    -r $Rid `
+    @props `
+    -o $publishDir
+
+if ($LASTEXITCODE -ne 0) {
+    throw "dotnet publish failed with exit code $LASTEXITCODE"
+}
+
+$zipName = if ($variant -eq $defaultVariant) { "TimerApp-Portable-$Rid.zip" } else { "TimerApp-Portable-$Rid-$variant.zip" }
+$zipPath = Join-Path $distDir $zipName
+
+if (Test-Path $zipPath) {
+    try { [System.IO.File]::Delete($zipPath) } catch { }
+}
+
+Compress-Archive -Path (Join-Path $publishDir "*") -DestinationPath $zipPath -Force
+
+$mainExe = Join-Path $publishDir "TimerApp.exe"
+if (Test-Path $mainExe) {
+    $exeMiB = [Math]::Round(((Get-Item $mainExe).Length / 1MB), 1)
+    Write-Host "EXE size: $exeMiB MiB"
+}
+$zipMiB = [Math]::Round(((Get-Item $zipPath).Length / 1MB), 1)
+Write-Host "ZIP size: $zipMiB MiB"
+
+Write-Host "Portable zip created:"
+Write-Host "  $zipPath"