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-cryptomining-in-cloud/SKILL.md

@@ -1,17 +1,27 @@
 ---
 name: detecting-cryptomining-in-cloud
-description: >
-  This skill teaches security teams how to detect and respond to unauthorized cryptocurrency
-  mining operations in cloud environments. It covers identifying cryptomining indicators
-  through compute usage anomalies, network traffic patterns to mining pools, GuardDuty
-  CryptoCurrency findings, and runtime process monitoring on EC2, ECS, EKS, and Azure
-  Automation workloads.
+description: 'This skill teaches security teams how to detect and respond to unauthorized cryptocurrency mining operations
+  in cloud environments. It covers identifying cryptomining indicators through compute usage anomalies, network traffic patterns
+  to mining pools, GuardDuty CryptoCurrency findings, and runtime process monitoring on EC2, ECS, EKS, and Azure Automation
+  workloads.
+
+  '
 domain: cybersecurity
 subdomain: cloud-security
-tags: [cryptomining-detection, cloud-abuse, resource-hijacking, guardduty-crypto, cost-anomaly]
+tags:
+- cryptomining-detection
+- cloud-abuse
+- resource-hijacking
+- guardduty-crypto
+- cost-anomaly
 version: 1.0.0
 author: mahipal
 license: Apache-2.0
+nist_csf:
+- PR.IR-01
+- ID.AM-08
+- GV.SC-06
+- DE.CM-01
 ---
 
 # Detecting Cryptomining in Cloud