feat: Added session expired logout feature

[Pratik2026]

Co-author: @uphadeharsh45

Proposed changes

This PR implements a user logged-out feature on session expiry. The user will now be logged out after 15 minutes of inactivity.

Please note that moving a cursor will still count as inactivity. In order to be considered active, the user must interact in a way that causes an API call at least once during the 15-minute interval.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (please describe):

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have created new branch for this pull request
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• My changes does not break the current system and it passes all the current test cases.

[dvjsharma]

LGTM