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Quick Summary
Design an extensible chat system where automated bots react to user messages in a shared channel.
Implement three specific bots that track state and interact with each other without direct dependencies.
Ensure the architecture allows adding new bot types without modifying existing code.
What This Tests
Object-Oriented Design and Open/Closed Principle
Event-Driven Architecture and Publish-Subscribe pattern
State management and command parsing
Decoupling components through interfaces
Common Patterns
Observer Pattern
Event-Driven Architecture
Factory Method
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