Third-party Sign-inSupported providersProviderRegionNotesGoogleGlobalOAuth 2.0 GitHubGlobalOAuth 2.0 WeChatChinaOpen Platform AppleGlobalSign in with AppleLinkingNew: clicking provider creates account auto Existing: Settings β Linked Accounts β Connect One CodePus account can link multiple providersPermissions requestedEmail Public profile (avatar / name) Never: contacts, repos, filesUnlinkingMust have at least one sign-in method (password OR provider) remaining.Failureaccess_denied: user declined provider consent email_already_in_use: that email is on another CodePus account; sign in with password and link instead