How a React Native app handles offline edits with a self-undoing queue

A developer has detailed the offline write architecture behind a notes-and-lists app built with React Native 0.81 and a single Kotlin module. The app treats the server as the sole source of truth, with the phone holding a read-only cache used only when the network is unavailable. When a user edits or deletes an item offline, the change is stored in a durable JSON queue in AsyncStorage, complete with a rollback payload capturing the pre-edit state so changes can be reversed if the server later rejects them. The queue replays on two triggers and distinguishes retryable network failures from definitive server refusals like 400 or 409 errors, which are surfaced to the user immediately. An earlier rule blocking offline edits to shared cards was ultimately removed as the design matured.