Electron qrTools.test.ts ↔ Compose 对照

Electron vitest	Compose 单测
generates a PNG data URL at all correction levels	QrEngineTest.roundTripsContentAtEveryCorrectionLevel
normalizes QR sizes to the settings boundary（20→120、360.4→360、9999→2000）	QrEngineTest.normalizesSizeAndRejectsEmptyOrBrokenImages（含 normalizeSize(360.4)，DIFF-526）

来源：next/src/features/qrcode/qrTools.test.ts。