The session check treated any response containing "Anmeldung" or
"Einloggen" as an expired session. Regular content pages (e.g. the FAQ)
mention these words in body text, which triggered a needless re-login and
returned the login page instead of the requested content.
Detection now relies on the status code and isLoginPageText() alone.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
