## Code Review

This pull request implements asynchronous race condition protection and atomic state updates in the assistant session management. Specifically, it updates `useAssistantSession` to check for stale requests (due to project switching or concurrent actions) before updating the store or establishing SSE connections. It also introduces `loadSessionSnapshot` in `useAssistantStore` to batch state updates atomically, preventing intermediate UI flashes. Comprehensive unit tests have been added to verify these race condition protections. I have no additional feedback to provide.

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