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On an implementation question impl_guidance (ENISA) keeps its earned semantic Top-1, but the top-K now surfaces the best operational_requirement and control_standard from the pool (ensureControlDiversity) — so different source roles are visible instead of one role flooding the list, without forcing the binding sources to Top-1. A recognised standard NAME (NIST/OWASP/ISO 27001/CIS/CSA CCM/Grundschutz) now overrides a mis-applied supervisory_guidance source_class in classifyAuthority, so those standards classify and rank as technical_standard (control_standard role). The corpus tags many standards as guidance (weight 70); the name wins. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>