Are there any standard features in Mediawiki that automatically generate user-specific pages?

Mediawiki does not have a built-in feature to automatically generate user-specific pages. However, you can achieve this by using extensions or custom code. One way to do this is by creating a custom extension that creates a user-specific page when a new user account is created.

// Custom extension to generate user-specific pages
$wgHooks['LocalUserCreated'][] = 'onLocalUserCreated';

function onLocalUserCreated( $user, $autocreated ) {
    $title = Title::newFromText( "User:" . $user->getName() );
    $article = new Article( $title );
    $article->doEdit( '', 'User-specific page creation', EDIT_NEW );
    return true;
}