ICS detection artifact retrieval. Pass ?target=PIPEDREAM or ?target=SANDWORM&format=sigma. Returns YARA/Sigma rules for the target malware or actor, sourced from public corpus (Florian Roth signature-base, CISA advisories) with validated:true, or DeepSeek-synthesised with validated:false. Designed for automated threat hunting pipelines that commit rules to SIEMs and EDRs — validated:true rules are safe to deploy; validated:false require lab testing first.