fix: correct user initials display when authentication is enabled

[Ragini-Microsoft]

Purpose

This pull request updates how user information is retrieved and displayed in the frontend, aligning it with Azure App Service authentication and simplifying the user info logic. The backend endpoint for user info is removed, and the frontend now directly consumes the Azure authentication endpoint. User display is improved by using the authenticated user's display name instead of parsing the user ID.

User Authentication and Display Improvements:

• The frontend (App.tsx) now fetches user information directly from the Azure App Service built-in authentication endpoint (/.auth/me) instead of the removed /api/user backend endpoint. It extracts the user ID from the objectidentifier claim and the display name from the name claim.
• The getUserInitials logic and the custom UserInfo interface are removed, and the Avatar component now displays the user's display name (if available) for a more accurate and user-friendly experience. [1] [2] [3]

Backend Cleanup:

• The /api/user endpoint and related user info retrieval logic are removed from the backend (app.py), as user details are now sourced directly from Azure App Service authentication in the frontend.

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

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Other Information

[github-actions]

🎉 This PR is included in version 1.8.1 🎉

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