概要
This skill provides comprehensive implementation patterns for Apple's Core Data framework, streamlining the creation of local persistence layers in iOS and tvOS apps. It covers everything from initial stack setup with NSPersistentContainer to advanced features like many-to-many relationships, background context operations, and database migrations. By providing standardized code for CRUD operations and SwiftUI integration, it helps developers build performant, offline-capable applications while avoiding common pitfalls in data synchronization and memory management.