Complete folder anatomy for all 649 cybersecurity skills + update LICENSE to Mahipal

- Add scripts/agent.py and references/api-reference.md to all remaining skills
- Update all 648 LICENSE files: copyright now reads 'Mahipal'
- Add implementing-security-monitoring-with-datadog (new skill with full anatomy)
- All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md

skills/performing-ot-network-security-assessment/references/api-reference.md

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+# API Reference — Performing OT Network Security Assessment
+
+## Libraries Used
+- **csv**: Parse asset inventories and firewall rule exports
+- **subprocess**: Execute nmap for OT protocol scanning
+- **xml.etree.ElementTree**: Parse nmap XML output
+
+## CLI Interface
+```
+python agent.py assets --csv ot_inventory.csv
+python agent.py segmentation --csv firewall_rules.csv
+python agent.py protocols --subnet 192.168.1.0/24
+python agent.py report --assets inventory.csv [--firewall fw_rules.csv]
+```
+
+## Core Functions
+
+### `assess_asset_inventory(csv_file)` — Purdue model zone analysis
+Groups assets by Purdue level. Flags end-of-life and unknown firmware.
+
+### `assess_network_segmentation(csv_file)` — Firewall rule audit
+Detects: direct IT-to-OT access (CRITICAL), allow-any-protocol rules (HIGH).
+
+### `scan_ot_protocols(target_subnet)` — OT protocol discovery
+Scans ports: 102 (S7), 502 (Modbus), 4840 (OPC-UA), 44818 (EtherNet/IP),
+47808 (BACnet), 20000 (DNP3).
+
+### `generate_assessment_report(...)` — Comprehensive report
+
+## OT Protocol Ports
+| Port | Protocol | Usage |
+|------|----------|-------|
+| 102 | S7Comm | Siemens S7 PLCs |
+| 502 | Modbus TCP | Industrial automation |
+| 4840 | OPC-UA | Industrial data exchange |
+| 44818 | EtherNet/IP | Allen-Bradley PLCs |
+| 47808 | BACnet | Building automation |
+| 20000 | DNP3 | SCADA/utility |
+
+## Dependencies
+System: nmap (optional, for protocol scanning)
+No Python packages required.