Distillation

🔴 (03:21) User requires upgrade detection to always check isHomebrewInstall() first because stored installation information may be stale; this logic appears at line 445 of upgrade.ts.
🔴 (03:21) User’s upgrade.ts preserves backward compatibility by re-exporting InstallationMethod and parseInstallationMethod from ./binary.js; the latter has biome-ignore lint/performance/noBarrelFile.
🔴 (03:21) User’s PackageManager type is exactly "npm" | "pnpm" | "bun" | "yarn".
🔴 (03:21) User’s upgrade module uses a scoped logger created with logger.withTag("upgrade").

Observations