test(asr): exercise origin status production boundary

cai

2026-08-11 dc98e7dbb2e909beab577f287da8dccac374c714

 src/asr_realtime.rs

@@ -586,11 +586,11 @@
            AudioIngressMetadata::rejection_status("invalid_source_or_sequence")
        );
        assert_eq!(
            "sequence_replayed_or_regressed",
            "origin_unprovable",
            AudioIngressMetadata::rejection_status("sequence_replayed")
        );
        assert_eq!(
            "wrong_participant_or_track",
            "origin_unprovable",
            AudioIngressMetadata::rejection_status("wrong_participant")
        );
        assert_eq!(