Test Purpose: This test aims to verify the full GitHub authentication flow by having a user log in from the Settings page.

Failure Message: `TimeoutError: page.waitForEvent: Timeout 10000ms exceeded while waiting for event "popup"`

Root Cause Analysis: The application failed to render the Settings page, which is a prerequisite for initiating the GitHub login flow. The blank white screenshot confirms the page did not load, leading to the timeout when the test waited for an authentication popup that could never be triggered.