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-hash-cracking-with-hashcat/references/api-reference.md

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+# API Reference — Performing Hash Cracking with Hashcat
+
+## Libraries Used
+- **subprocess**: Execute hashcat with various attack modes
+- **hashlib**: Generate test hashes (MD5, SHA1, SHA256, SHA512)
+- **re**: Pattern matching for hash type identification
+- **pathlib**: Read hash files and potfiles
+
+## CLI Interface
+```
+python agent.py identify --hash <hash_string>
+python agent.py identify --file hashes.txt
+python agent.py crack --hash-file hashes.txt --mode 0 --attack dictionary --wordlist rockyou.txt [--rules best64.rule]
+python agent.py crack --hash-file hashes.txt --mode 1000 --attack brute --mask "?u?l?l?l?d?d?d?s"
+python agent.py parse --potfile hashcat.potfile
+python agent.py gen --text "password123" --algo sha256
+```
+
+## Core Functions
+
+### `identify_hash(hash_string)` — Detect hash type and hashcat mode
+Matches against 12 patterns: MD5 (0), SHA1 (100), SHA256 (1400), SHA512 (1700),
+NTLM (1000), bcrypt (3200), sha512crypt (1800), md5crypt (500), NetNTLMv2 (5600),
+Kerberos TGS (13100), Kerberos AS-REP (18200).
+
+### `run_hashcat(hash_file, mode, attack, wordlist, rules, mask)` — Execute hashcat
+Attack modes: `dictionary` (-a 0), `brute` (-a 3), `combinator` (-a 1).
+
+### `parse_hashcat_status(potfile)` — Analyze cracked passwords
+Returns length distribution, charset analysis, top passwords from potfile.
+
+### `generate_hash(plaintext, algorithm)` — Create test hashes
+Supported: md5, sha1, sha256, sha512.
+
+## Hashcat Mask Charsets
+- `?l` lowercase, `?u` uppercase, `?d` digits, `?s` special, `?a` all
+
+## Dependencies
+System: hashcat (GPU-accelerated hash cracking)
+No Python packages required — standard library only.