Summary

Resolves #652

This PR addresses the UI issues and the missing functionality reported in the issue:

1. Right Panel Collapse Bug: The right sidebar wasn't collapsing properly because .app grid columns had a hardcoded 340px instead of using the --panel-width variable when not in compact view. This has been updated to use the variable properly.
2. Forgot Password: The auth modal has been enhanced with a "Forgot Password?" flow. It provides a UI to enter an email for password recovery and wires up to a newly created /api/auth/forgot-password endpoint.

Changes

• css/index.css: Fixed the grid-template-columns definition inside .app to use var(--panel-width, 340px).
• index.html: Added "Forgot Password?" link and javascript logic inside the auth script block to switch between Login and Reset Password views seamlessly.
• server.js: Created a simple /api/auth/forgot-password route to handle the reset request.

Verification

• Panel successfully collapses into a thin strip and restores its size on toggle.
• "Forgot password?" seamlessly switches the modal view and calls the backend route successfully.