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-cloud-native-forensics-with-falco/SKILL.md

@@ -1,16 +1,25 @@
 ---
 name: performing-cloud-native-forensics-with-falco
-description: >
-  Uses Falco YAML rules for runtime threat detection in containers and Kubernetes,
-  monitoring syscalls for shell spawns, file tampering, network anomalies, and privilege
-  escalation. Manages Falco rules via the Falco gRPC API and parses Falco alert output.
-  Use when building container runtime security or investigating k8s cluster compromises.
+description: 'Uses Falco YAML rules for runtime threat detection in containers and Kubernetes, monitoring syscalls for shell
+  spawns, file tampering, network anomalies, and privilege escalation. Manages Falco rules via the Falco gRPC API and parses
+  Falco alert output. Use when building container runtime security or investigating k8s cluster compromises.
+
+  '
 domain: cybersecurity
 subdomain: cloud-security
-tags: [performing, cloud, native, forensics]
-version: "1.0"
+tags:
+- performing
+- cloud
+- native
+- forensics
+version: '1.0'
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- PR.IR-01
+- ID.AM-08
+- GV.SC-06
+- DE.CM-01
 ---
 
 # Performing Cloud Native Forensics with Falco