Building a Multi-User AI Agent System: Architecture Deep-Dive (Open Source)

If you're building AI agents for production, you've probably hit these walls: Isolation : How do you run multiple users' agents without them interfering? Persistence : How do you maintain memory across sessions? Multi-channel : How do you connect to WhatsApp AND Telegram AND Slack without building three integrations? Cost control : How do you prevent one user from burning through your e