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/reverse-engineering-android-malware-with-jadx/SKILL.md

@@ -1,17 +1,27 @@
 ---
 name: reverse-engineering-android-malware-with-jadx
-description: >
-  Reverse engineers malicious Android APK files using JADX decompiler to analyze Java/Kotlin
-  source code, identify malicious functionality including data theft, C2 communication,
-  privilege escalation, and overlay attacks. Examines manifest permissions, receivers,
-  services, and native libraries. Activates for requests involving Android malware analysis,
-  APK reverse engineering, mobile malware investigation, or Android threat analysis.
+description: 'Reverse engineers malicious Android APK files using JADX decompiler to analyze Java/Kotlin source code, identify
+  malicious functionality including data theft, C2 communication, privilege escalation, and overlay attacks. Examines manifest
+  permissions, receivers, services, and native libraries. Activates for requests involving Android malware analysis, APK reverse
+  engineering, mobile malware investigation, or Android threat analysis.
+
+  '
 domain: cybersecurity
 subdomain: malware-analysis
-tags: [malware, Android, reverse-engineering, JADX, mobile-malware]
+tags:
+- malware
+- Android
+- reverse-engineering
+- JADX
+- mobile-malware
 version: 1.0.0
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- DE.AE-02
+- RS.AN-03
+- ID.RA-01
+- DE.CM-01
 ---
 
 # Reverse Engineering Android Malware with JADX