补充打包方式

scripts/make_icon.ps1

@@ -1,7 +1,7 @@
-# 年糕历险记 —— 程序图标生成（构建与发布.md §8：exe/窗口使用原版素材 logo）
+# 年糕历险记 —— 程序图标生成（构建与发布.md §8：exe/窗口/快捷方式/安装器使用原版素材 logo）
 # 用法：pwsh -File scripts/make_icon.ps1
-# 流程：素材包 pack.png → cmd/client/icon.png → go-winres 生成 cmd/client/icon.syso
-# （资源目录树格式，Go 链接器自动嵌入 exe；资源管理器/任务栏/快捷方式显示图标）。
+# 流程：素材包 pack.png → cmd/client/icon.png → go-winres 生成 icon.syso（嵌入游戏 exe）
+#       → 同时生成多尺寸 cmd/client/icon.ico（供 NSIS 安装器 MUI_ICON / MUI_UNICON 使用）
 $ErrorActionPreference = "Stop"
 $root = Split-Path $PSScriptRoot -Parent
 
@@ -20,9 +20,47 @@ $env:GOCACHE = Join-Path $root ".gocache"
 Push-Location (Join-Path $root "cmd\client")
 try {
     go run github.com/tc-hib/go-winres@latest make --in winres.json --out icon --arch amd64 --no-suffix
-    if ($LASTEXITCODE -ne 0) { throw "go-winres 生成失败" }
+    if ($LASTEXITCODE -ne 0) { throw "go-winres 生成失败" }
     Move-Item -Force (Join-Path (Get-Location) "icon") (Join-Path (Get-Location) "icon.syso")
 } finally {
     Pop-Location
 }
-Write-Host "== 图标资源已嵌入：cmd/client/icon.syso =="
+Write-Host "== 图标资源已嵌入：cmd/client/icon.syso =="
+
+# 3) 生成多尺寸 icon.ico（16/24/32/48/64/128/256，PNG 压缩，供 NSIS 安装器/卸载器使用）
+Add-Type -AssemblyName System.Drawing
+$src = [System.Drawing.Image]::FromFile((Join-Path $root "cmd\client\icon.png"))
+$sizes = @(16, 24, 32, 48, 64, 128, 256)
+$ms = New-Object System.IO.MemoryStream
+$bw = New-Object System.IO.BinaryWriter($ms)
+# ICONDIR：reserved(2)=0, type(2)=1, count(2)
+$bw.Write([uint16]0); $bw.Write([uint16]1); $bw.Write([uint16]$sizes.Count)
+$offset = 6 + 16 * $sizes.Count
+$images = @()
+foreach ($s in $sizes) {
+    $bmp = New-Object System.Drawing.Bitmap($s, $s)
+    $g = [System.Drawing.Graphics]::FromImage($bmp)
+    $g.InterpolationMode = [System.Drawing.Drawing2D.InterpolationMode]::HighQualityBicubic
+    $g.DrawImage($src, 0, 0, $s, $s)
+    $g.Dispose()
+    $pngMs = New-Object System.IO.MemoryStream
+    $bmp.Save($pngMs, [System.Drawing.Imaging.ImageFormat]::Png)
+    $images += ,$pngMs.ToArray()
+    $bmp.Dispose(); $pngMs.Dispose()
+}
+for ($i = 0; $i -lt $sizes.Count; $i++) {
+    $s = $sizes[$i]
+    $dim = if ($s -ge 256) { 0 } else { $s }   # 256 用 0 表示
+    $bw.Write([byte]$dim); $bw.Write([byte]$dim)
+    $bw.Write([byte]0); $bw.Write([byte]0)      # colors / reserved
+    $bw.Write([uint16]1); $bw.Write([uint16]32) # planes / bpp
+    $bw.Write([uint32]$images[$i].Length)
+    $bw.Write([uint32]$offset)
+    $offset += $images[$i].Length
+}
+foreach ($d in $images) { $bw.Write($d) }
+$bw.Flush()
+[System.IO.File]::WriteAllBytes((Join-Path $root "cmd\client\icon.ico"), $ms.ToArray())
+$src.Dispose()
+$bw.Close(); $ms.Dispose()
+Write-Host "== 安装器图标已生成：cmd/client/icon.ico（$($sizes -join '/') px）=="