Access QA Fixture

Public end-to-end QA fixture pages (zero secrets, deterministic client-side checks only).

• Case 3: Custom modal dialog with no <form> and shadow-root password
• Case 5: Two-step password + RFC 6238 TOTP login
• Case 7: Authenticator 2FA enrollment (QR + Base32 + recovery codes)
• Case 9: Developer portal API key creation + /v1/domains check