I need a lightweight, text-only chat application for iOS that lets users create and participate in group conversations. No voice, video, or file-sharing components are required—just clean, reliable messaging with standard bubbles, timestamps, and read indicators. Core requirements • iOS-native build (Swift or Objective-C). • User authentication (email, Apple ID, or another common provider). • Create, join, and leave group chats. • Real-time message delivery with basic persistence so history reloads when the app reopens. • Push notifications for new messages while the app is in the background. • Simple, modern UI that follows Apple Human Interface Guidelines. Deliverables 1. Xcode project with clear, commented source code. 2. Any backend or realtime database setup scripts (Firebase, Supabase, or similar). 3. Brief README covering build steps, third-party services used, and how to swap credentials. 4. One short screen-capture or TestFlight build demonstrating group chat flow. I’m happy to take technical suggestions—whether you prefer Firebase Firestore, WebSockets, or another solution—as long as setup remains straightforward for a single-developer handoff.