🔒 fix: Robust Cache Reset on User Logout

[danny-avila]

Summary

This pull request addresses an issue where the cache was not properly reset upon user logout, potentially allowing the next user on the same browser to access data from the previous session. I implemented a fix that ensures the cache is correctly cleared when a user logs out, enhancing the security and privacy of LibreChat when used between multiple users on the same browser.

Closes #1320

Change Type

• Bug fix (non-breaking change which fixes an issue)
• Refactor (code improvements with no change in functionality)

Testing

To verify the fix, I conducted manual tests by logging into the application, performing various actions to populate the cache, and then logging out. Upon logging in with a different user account, I confirmed that no residual data was available from the previous session. I also reviewed the network activity to ensure no unauthorized data requests were made after logging out.

I recommend further testing by:

1. Logging in and performing a diverse set of actions to ensure various types of data are cached.
2. Logging out and inspecting the cache storage to confirm it has been reset.
3. Logging in with a different user on the same browser and checking for any data leak from the previous session.

Test Configuration:

• Browsers: Chrome, Firefox, Safari
• Cache inspection tools: Browser DevTools

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes