feat: add ServiceNow platform skill covering scripting, architecture, SecOps, ITAM/SAM, FSM, SPM, CSDM, and IntegrationHub - #568

This PR adds a new servicenow skill under skills/servicenow/.

The skill is designed as a broad ServiceNow platform assistant rather than a narrow scripting helper. It covers:

• ITSM
• ITOM
• ITAM and SAM Pro
• FSM
• HRSD and CSM
• SPM / PPM
• Vulnerability Response
• Security Incident Response
• IRM / GRC / SecOps
• CSDM and CMDB governance
• IntegrationHub
• App Engine
• Service Portal
• UI Builder / Now Experience
• Virtual Agent
• testing, security, performance, update sets, and CI/CD

The package includes:

• SKILL.md with explicit routing and platform standards
• 28 curated reference packs under references/
• a reusable helper CLI under scripts/snow_helper.py
• smoke tests under scripts/test_snow_helper.py

Why This Skill Is Useful

ServiceNow is broad enough that users often need both domain routing and implementation guardrails. This skill reduces incorrect patterns around:

• unsafe auth and hardcoded configuration
• GlideRecord misuse
• incorrect aggregate/query patterns
• recursive Business Rule updates
• weak platform-context routing across product families

What differentiates it from a narrow scripting-only skill:

• routes across major product families instead of focusing only on ITSM or server-side scripting
• keeps domain guidance separated into focused reference packs instead of one monolithic instruction file
• includes a reusable CLI helper for template generation, linting, and package validation
• emphasizes safer defaults around auth, scoped-app get() handling, aggregates, and recursion risks

Validation

python3 skills/servicenow/scripts/snow_helper.py validate-skill skills/servicenow
python3 skills/servicenow/scripts/test_snow_helper.py

Reviewer Shortcuts

If reviewing quickly, these files give the best signal:

• skills/servicenow/SKILL.md
• skills/servicenow/references/vulnerability-response.md
• skills/servicenow/references/security-incident-response.md
• skills/servicenow/references/integrationhub.md
• skills/servicenow/scripts/snow_helper.py

Trigger Examples

Should trigger:

• Write a GlideRecord query for active incidents assigned to me
• Create a Business Rule for change requests that prevents closure without implementation notes
• Build a Vulnerability Response routing workflow
• Create a Scripted REST resource for ServiceNow
• Design CSDM relationships for business applications and service offerings

Should not trigger:

• Write a generic JavaScript array helper
• Build a React modal component
• Optimize a MySQL schema
• Explain Python decorators
• Design an AWS IAM policy

Notes

• The skill folder does not contain a README — compliant with current skill packaging guidance.
• The helper and references are aligned so examples reinforce the standards defined in SKILL.md.