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/detecting-container-drift-at-runtime/SKILL.md

@@ -1,12 +1,26 @@
 ---
 name: detecting-container-drift-at-runtime
-description: Detect unauthorized modifications to running containers by monitoring for binary execution drift, file system changes, and configuration deviations from the original container image.
+description: Detect unauthorized modifications to running containers by monitoring for binary execution drift, file system
+  changes, and configuration deviations from the original container image.
 domain: cybersecurity
 subdomain: container-security
-tags: [container-drift, runtime-security, immutable-containers, falco, kubernetes, container-security, drift-detection, microsoft-defender]
-version: "1.0"
+tags:
+- container-drift
+- runtime-security
+- immutable-containers
+- falco
+- kubernetes
+- container-security
+- drift-detection
+- microsoft-defender
+version: '1.0'
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- PR.PS-01
+- PR.IR-01
+- ID.AM-08
+- DE.CM-01
 ---
 
 # Detecting Container Drift at Runtime