Log in page on the stand alone muiltisystem DIAGNOSTIC APPLICATION

Create a column on the stand alone application for the administrators (MAX 4) to log into the application system using
1. Username
2. Google
3. Github

Without any subscriptions to be paid

Start by identifying the standalone application's login entry point and clarifying the intended administrator authentication flow. Confirm how the maximum of four administrators should use username, Google, or GitHub login, and define what no-subscription access means before implementation; done means the specified administrator login behavior is supported.

Written by the indexing model from the issue text.