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V6.x->user_authentication_required, V11.2.1->credential_confidentiality_protection, V11.7.1->auth_key_management; semantisch (NICHT CRA-Anker, die sind approximativ). V16.x pending bis Logging-Cut. anchor_quality_note dokumentiert. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>