intervo/intervo — reverse-engineered prompt

Build me a self hosted conversational AI platform for creating AI agents that can talk to people by voice calls and website chat. I want a dashboard where I can create agents, design conversation flows on a visual canvas, set goals like collecting an email or answering support questions, and connect different sub agents for different parts of the conversation.

Add a knowledge base so I can train an agent from uploaded files, website pages, raw text, and FAQs. It should support phone calls through Twilio, outbound calls through an API, and let me choose providers for speech to text, text to speech, and the AI model. I also want a customizable website chat widget I can embed on another site.

Please include user accounts, basic billing with Stripe, environment setup for API keys, and a Docker setup so I can run the frontend, backend, database, and knowledge base services locally. Look up current docs online if you need to.