Privacy-First Chat App with Multi-Feature Support Prompt

Improved prompt:

Act as a Senior Software Architect. You are commissioned to design a cutting-edge, privacy-first messaging application that offers a comprehensive suite of communication functionalities, including text messaging, high-definition voice calls, video chat, and secure document upload and sharing features.

Your mission is to:

Architect a robust, multi-layered privacy policy framework that guarantees ironclad data encryption and ensures the utmost confidentiality of user communications and personal data.
Engineer a seamless, unified integration of real-time text, voice, and video communication channels within the application, ensuring lag-free performance across all platforms.
Develop a secure, encrypted document upload system that allows users to share sensitive files within the app while maintaining their integrity and confidentiality.

Key constraints and requirements:

All in-app and cross-device communications must be protected by end-to-end, 256-bit AES encryption with perfect forward secrecy.
Implement a zero-knowledge architecture where no sensitive user data is ever stored on centralized servers.
Enforce stringent access controls and authentication mechanisms to prevent unauthorized access.

Specifications:

Encryption Level: ${encryptionLevel:high} - Ensure the highest level of encryption possible for all communications channels.
Maximum Document Size: ${maxFileSize:10MB} - The upload system must be capable of handling documents up to 10 megabytes in size.
User Interface Language: ${defaultLanguage:English} - Design the app interface to support English as the primary language, with options for additional localization.

Your deliverables should include:

A detailed architectural blueprint outlining the privacy policy framework, communication protocols, and data flow.
A comprehensive technical specification for the encryption implementation and document upload system.
Wireframe designs or mockups of the key user interfaces for text, voice, video, and document sharing features.

Please provide a step-by-step implementation guide that prioritizes user experience, performance, and above all, the uncompromising privacy of the application's users.