Add folder anatomy (scripts/agent.py + references/api-reference.md) for 648 cybersecurity skills

Complete skill folder anatomy across all cybersecurity skills:
- scripts/agent.py: 80-150 line Python agents using real libraries (impacket,
  boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.)
- references/api-reference.md: real API documentation with method signatures
- LICENSE: MIT license for all skill folders

skills/monitoring-darkweb-sources/references/api-reference.md

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+# API Reference: Monitoring Dark Web Sources
+
+## Have I Been Pwned API v3
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/api/v3/breaches` | GET | List all known data breaches |
+| `/api/v3/breach/{name}` | GET | Get details of a specific breach |
+| `/api/v3/pasteaccount/{email}` | GET | Search paste site archives for an email |
+| `/api/v3/breachedaccount/{email}` | GET | Check if email appears in breaches |
+
+## Dehashed API
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/search?query=domain:example.com` | GET | Search exposed credentials by domain |
+| `/search?query=email:user@example.com` | GET | Search by specific email address |
+
+## Ransomware.live API
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/recentvictims` | GET | List recent ransomware leak site victims |
+| `/groups` | GET | List tracked ransomware groups |
+| `/group/{name}` | GET | Get details for a specific ransomware group |
+
+## Recorded Future Dark Web Module
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/v2/darkweb/search` | GET | Search dark web mentions by keyword |
+| `/v2/credentials/search` | GET | Search exposed credentials |
+
+## Key Libraries
+
+- **requests**: HTTP client for HIBP, Dehashed, and ransomware.live APIs
+- **spiderfoot** (CLI): OSINT automation including dark web module `sfp_darkweb`
+- **theHarvester**: Domain reconnaissance including breach data sources
+
+## Configuration
+
+| Variable | Description |
+|----------|-------------|
+| `HIBP_API_KEY` | Have I Been Pwned API key (paid tier for domain search) |
+| `DEHASHED_API_KEY` | Dehashed API key for credential exposure search |
+| `DEHASHED_EMAIL` | Dehashed account email for API authentication |
+| `RF_API_TOKEN` | Recorded Future API token for dark web module |
+
+## Rate Limits
+
+| API | Rate Limit |
+|-----|------------|
+| HIBP | 10 requests/minute (paid key) |
+| Dehashed | 5 requests/second |
+| Ransomware.live | No published limit (be respectful) |
+
+## References
+
+- [Have I Been Pwned API](https://haveibeenpwned.com/API/v3)
+- [Dehashed API Docs](https://www.dehashed.com/docs)
+- [Ransomware.live](https://www.ransomware.live/)
+- [SpiderFoot OSINT](https://github.com/smicallef/spiderfoot)