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/implementing-soar-automation-with-phantom/SKILL.md

@@ -1,17 +1,33 @@
 ---
 name: implementing-soar-automation-with-phantom
-description: >
-  Implements Security Orchestration, Automation, and Response (SOAR) workflows using Splunk SOAR
-  (formerly Phantom) to automate alert triage, IOC enrichment, containment actions, and incident
-  response playbooks. Use when SOC teams need to reduce manual analyst work, standardize response
-  procedures, or integrate multiple security tools into automated workflows.
+description: 'Implements Security Orchestration, Automation, and Response (SOAR) workflows using Splunk SOAR (formerly Phantom)
+  to automate alert triage, IOC enrichment, containment actions, and incident response playbooks. Use when SOC teams need
+  to reduce manual analyst work, standardize response procedures, or integrate multiple security tools into automated workflows.
+
+  '
 domain: cybersecurity
 subdomain: soc-operations
-tags: [soc, soar, phantom, splunk-soar, automation, playbook, orchestration, incident-response]
-mitre_attack: ["T1566", "T1059", "T1078"]
-version: "1.0"
+tags:
+- soc
+- soar
+- phantom
+- splunk-soar
+- automation
+- playbook
+- orchestration
+- incident-response
+mitre_attack:
+- T1566
+- T1059
+- T1078
+version: '1.0'
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- DE.CM-01
+- DE.AE-02
+- RS.MA-01
+- DE.AE-06
 ---
 # Implementing SOAR Automation with Phantom