feat: add NIST CSF 2.0 nist_csf field to all 754 cybersecurity skills

Mapped every skill to NIST CSF 2.0 subcategory IDs (GV/ID/PR/DE/RS/RC functions)
based on subdomain and content analysis. Restores 11 skills corrupted during
prior rebase, re-enriching with ATLAS, D3FEND, NIST AI RMF, and CSF 2.0 fields.

All 754 skills now carry structured mappings for all 5 security frameworks:
- MITRE ATT&CK (in tags)
- MITRE ATLAS v5.5 (atlas_techniques)
- MITRE D3FEND v1.3 (d3fend_techniques)
- NIST AI RMF 1.0 (nist_ai_rmf)
- NIST CSF 2.0 (nist_csf)

skills/extracting-iocs-from-malware-samples/SKILL.md

@@ -1,17 +1,27 @@
 ---
 name: extracting-iocs-from-malware-samples
-description: >
-  Extracts indicators of compromise (IOCs) from malware samples including file hashes,
-  network indicators (IPs, domains, URLs), host artifacts (file paths, registry keys,
-  mutexes), and behavioral patterns for threat intelligence sharing and detection rule
-  creation. Activates for requests involving IOC extraction, threat indicator harvesting,
-  malware indicator collection, or building detection content from samples.
+description: 'Extracts indicators of compromise (IOCs) from malware samples including file hashes, network indicators (IPs,
+  domains, URLs), host artifacts (file paths, registry keys, mutexes), and behavioral patterns for threat intelligence sharing
+  and detection rule creation. Activates for requests involving IOC extraction, threat indicator harvesting, malware indicator
+  collection, or building detection content from samples.
+
+  '
 domain: cybersecurity
 subdomain: malware-analysis
-tags: [malware, IOC-extraction, threat-intelligence, indicators, detection]
+tags:
+- malware
+- IOC-extraction
+- threat-intelligence
+- indicators
+- detection
 version: 1.0.0
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- DE.AE-02
+- RS.AN-03
+- ID.RA-01
+- DE.CM-01
 ---
 
 # Extracting IOCs from Malware Samples