Object Storage for pnpm Monorepo (Express + React)

Replit's object storage (App Storage) provides GCS-backed file storage with presigned URL uploads. The server handles presigned URL generation and object serving; file uploads go directly to GCS from the client.

Note: This skill is for web stacks only. For Expo/React Native mobile apps, the expo_object_storage blueprint should be used instead — it provides Expo-specific client utilities and avoids incompatible web libraries.

Architecture Overview