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/performing-static-malware-analysis-with-pe-studio/SKILL.md

@@ -1,17 +1,27 @@
 ---
 name: performing-static-malware-analysis-with-pe-studio
-description: >
-  Performs static analysis of Windows PE (Portable Executable) malware samples using
-  PEStudio to examine file headers, imports, strings, resources, and indicators without
-  executing the binary. Identifies suspicious characteristics including packing, anti-analysis
-  techniques, and malicious imports. Activates for requests involving static malware analysis,
+description: 'Performs static analysis of Windows PE (Portable Executable) malware samples using PEStudio to examine file
+  headers, imports, strings, resources, and indicators without executing the binary. Identifies suspicious characteristics
+  including packing, anti-analysis techniques, and malicious imports. Activates for requests involving static malware analysis,
   PE file inspection, Windows executable analysis, or pre-execution malware triage.
+
+  '
 domain: cybersecurity
 subdomain: malware-analysis
-tags: [malware, static-analysis, PE-analysis, PEStudio, reverse-engineering]
+tags:
+- malware
+- static-analysis
+- PE-analysis
+- PEStudio
+- reverse-engineering
 version: 1.0.0
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- DE.AE-02
+- RS.AN-03
+- ID.RA-01
+- DE.CM-01
 ---
 
 # Performing Static Malware Analysis with PEStudio