Git User Email Detection

What: Added function to retrieve git user email from git configuration.

How to use: Automatically detects git config user.email value when linking VCS accounts.

Details:

• New function Wi5() at line 426065 executes git config --get user.email
• Integrated with VCS account linking in QT2() at line 426023, now includes git_user_email field
• Used to associate git commits with Claude Code user accounts
• Evidence: Wi5() at line 426065, QT2() at line 426023