Note

Medium Risk
Medium risk because it changes how E2E_MOCK_OAUTH routes through token exchange and seedless authentication and adjusts Metro module mocking behavior, which can affect CI/E2E flows and UAT OAuth config selection.

Overview
Onboarding performance runs now use the real seedless onboarding controller while still supporting a QA-mock OAuth token exchange path, so TOPRF auth can run against live nodes.

This adds OAUTH_BUILD_TYPE=main_uat to Bitrise BrowserStack builds and allows overriding OAuth config via process.env.OAUTH_BUILD_TYPE. The QA mock token exchange now generates a unique +e2e@web3auth.io email by default, uses real-ish OAuth client IDs in mocks, and always proceeds to seedless authenticate (removing the prior short-circuit), with updated tests and improved mock server logging/fallback behavior.

^{Reviewed by Cursor Bugbot for commit e6160df. Configure here.}