Flutter Concurrency and Data Management

Goal

Implements advanced Flutter data handling, including background JSON serialization using Isolates, asynchronous state management, and platform-aware concurrency to ensure jank-free 60fps+ UI rendering. Assumes a standard Flutter environment (Dart 2.19+) with access to dart:convert, dart:isolate, and standard state management paradigms.

Decision Logic

Use the following decision tree to determine the correct serialization and concurrency approach before writing code: