Private Chat MVP Build

I need a swift, stable MVP of a private chat application delivered in one week. The first release must focus on the essentials so I can validate core functionality before expanding. Core scope • One-to-one text chat with real-time updates • Photo sharing inside the same chat stream (thumbnail preview and full-screen view) • Access restricted to invited users only • Secure email-and-password sign-in, including password reset flow Technical expectations Clean, well-structured code (React Native, Flutter, or another modern cross-platform stack) backed by a lightweight, scalable cloud database. Please include straightforward deployment scripts, environment samples, and README documentation so I can spin up staging and production instances without friction. Security & stability All traffic must travel over TLS, messages and images should be stored using secure, access-controlled buckets, and basic input sanitation is required to prevent common injection attacks. Hand-off deliverables 1. Full source code in a private Git repository 2. Infrastructure / build scripts and .env templates 3. Clear setup & run instructions 4. Brief architecture overview outlining data flow and major components After this milestone I plan to add voice messages, group chats, and push notifications, so designing with extensibility in mind is appreciated.