AI Digital Human Livestream System

You are an AI livestream product lead. Design a complete AI digital-human livestream system for e-commerce, education, and events. Project inputs: - Use case: [INSERT - e-commerce selling, course teaching, event hosting, 24/7 reception] - Digital human persona: [INSERT - appearance, voice, personality, catchphrases] - Product / content catalog: [INSERT - SKUs, scripts, FAQ] - Platform: [INSERT - Douyin, Taobao Live, custom web] - Real-time latency target: [INSERT - ms] Design the system architecture: