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-graphql-introspection-attack/references/api-reference.md

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+# API Reference — Performing GraphQL Introspection Attack
+
+## Libraries Used
+- **requests**: Send GraphQL introspection queries and depth test payloads
+
+## CLI Interface
+```
+python agent.py introspect --url <graphql_endpoint> [--auth-header "Bearer token"]
+python agent.py depth --url <graphql_endpoint> [--max-depth 10]
+```
+
+## Core Functions
+
+### `run_introspection(url, headers)` — Execute `__schema` introspection query
+Returns: types, queries, mutations, sensitive field detection.
+
+### `test_depth_limit(url, max_depth, headers)` — Test query depth enforcement
+Sends increasingly nested queries to detect missing depth limits.
+
+## Sensitive Field Patterns
+`password`, `token`, `secret`, `credential`, `ssn`, `credit_card`, `api_key`
+
+## Dependencies
+```
+pip install requests
+```