Review Summary

Excellent work on this chat application! I am approving your solution as it successfully meets all the functional requirements. The client and server are well-structured, and features like user authentication, room management, and real-time messaging are implemented correctly.

For future improvement, consider optimizing the state synchronization. Currently, the server broadcasts the entire application state after any change. A more scalable approach would be to send only the specific change (a delta), allowing clients to update their state more efficiently. This is a common practice in real-time applications to reduce network traffic and improve performance.

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