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scripts/generate-icons.mjs

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+// 从 public/favicon.svg 派生 Tauri 需要的各尺寸 PNG 图标
+// 用法: node scripts/generate-icons.mjs
+// 一次性脚本, 生成的图标随仓库提交, 不需要每次都跑
+import sharp from 'sharp'
+import path from 'node:path'
+import fs from 'node:fs'
+
+const SVG = path.join(process.cwd(), 'public', 'favicon.svg')
+const OUT = path.join(process.cwd(), 'src-tauri', 'icons')
+fs.mkdirSync(OUT, { recursive: true })
+
+const svg = fs.readFileSync(SVG)
+const base = sharp(svg)
+
+// Tauri 桌面 + Android 需要的尺寸
+const TARGETS = [
+  { name: '32x32.png',        size: 32 },
+  { name: '128x128.png',      size: 128 },
+  { name: '128x128@2x.png',   size: 256 },
+  { name: 'icon.png',         size: 1024 },
+]
+
+for (const t of TARGETS) {
+  const buf = await base.clone().resize(t.size, t.size).png().toBuffer()
+  fs.writeFileSync(path.join(OUT, t.name), buf)
+  console.log('wrote', t.name, t.size + 'x' + t.size)
+}
+
+// Windows .ico (单 256x256 frame, 简单够用)
+const ico = await sharp(svg).resize(256, 256).png().toBuffer()
+fs.writeFileSync(path.join(OUT, 'icon.ico'), ico)
+console.log('wrote icon.ico (256x256 PNG-as-ICO)')
+
+// macOS .icns: TaurCli 可用 png2icns 工具, 这里只放占位
+// 如果未来要打 macOS DMG, 跑 cargo tauri icon 重新生成
+fs.copyFileSync(path.join(OUT, 'icon.png'), path.join(OUT, 'icon.icns'))
+console.log('wrote icon.icns (copy of icon.png, run cargo tauri icon to replace)')