Integration Disconnection After GitHub Username Update

Description:
Hi Team,

I’m encountering an issue where updating my GitHub username results in a lost connection between my account and Lovable. After changing my username via GitHub’s settings, the integration with Lovable appears to break, requiring reauthentication.

Steps to Reproduce:

1. Connect Lovable to a GitHub account with username [OldUsername].

2. Update the GitHub username to [NewUsername] via GitHub’s profile settings.

3. Return to Lovable — the integration is no longer functional.

After updating my GitHub username, the Lovable integration appears to disconnect despite a confirmation modal indicating the connection is still active.