Charon/docs/plans/proof-of-concept

Proof of Concept - Agent Skills Migration

This directory contains the proof-of-concept deliverables for the Agent Skills migration project.

Important: Directory Location

Skills Location: .github/skills/ (not .agentskills/)

• This is the official VS Code Copilot location for Agent Skills
• Source: VS Code Copilot Documentation
• The SKILL.md format follows the agentskills.io specification

Key Distinction:

• .github/skills/ = WHERE skills are stored (VS Code requirement)
• agentskills.io = HOW skills are formatted (specification standard)

---

Contents

File	Description	Status
test-backend-coverage.SKILL.md	Complete, validated SKILL.md example	✅ Validated
validate-skills.py	Frontmatter validation tool	✅ Functional
SUPERVISOR_REVIEW_SUMMARY.md	Complete review summary for Supervisor	✅ Complete

Quick Validation

Validate the Proof-of-Concept SKILL.md

cd /projects/Charon/docs/plans/proof-of-concept
python3 validate-skills.py --single test-backend-coverage.SKILL.md

Expected output:

✓ test-backend-coverage.SKILL.md is valid

Key Metrics

• SKILL.md Lines: 400+ (under 500-line target ✅)
• Frontmatter Fields: 100% complete ✅
• Validation: Passes all checks ✅
• Progressive Disclosure: Demonstrated ✅

What's Demonstrated

1. Complete Frontmatter

The POC includes all required and optional frontmatter fields:

• ✅ Required fields (name, version, description, author, license, tags)
• ✅ Compatibility (OS, shells)
• ✅ Requirements (Go, Python)
• ✅ Environment variables (documented with defaults)
• ✅ Parameters (documented with types)
• ✅ Outputs (documented with paths)
• ✅ Custom metadata (category, execution_time, risk_level, flags)

2. Progressive Disclosure

The POC demonstrates how to keep SKILL.md under 500 lines:

• Clear section hierarchy
• Links to related skills
• Concise examples
• Structured tables for parameters/outputs
• Notes section for caveats

3. AI Discoverability

The POC includes metadata for AI discovery:

• Descriptive name (kebab-case)
• Rich tags (testing, coverage, go, backend, validation)
• Clear description (120 chars)
• Category and subcategory
• Execution time and risk level

4. Real-World Example

The POC is based on the actual go-test-coverage.sh script:

• Maintains all functionality
• Preserves environment variables
• Documents performance thresholds
• Includes troubleshooting guides
• References original source

Validation Results

✓ test-backend-coverage.SKILL.md is valid

Validation Checks Passed:
  ✓ Frontmatter present and valid YAML
  ✓ Required fields present
  ✓ Name format (kebab-case)
  ✓ Version format (semver: 1.0.0)
  ✓ Description length (< 120 chars)
  ✓ Description single-line
  ✓ Tags count (5 tags)
  ✓ Tags lowercase
  ✓ Compatibility OS valid
  ✓ Compatibility shells valid
  ✓ Metadata category valid
  ✓ Metadata execution_time valid
  ✓ Metadata risk_level valid
  ✓ Metadata boolean fields valid
  ✓ Total: 14/14 checks passed

Implementation Readiness

This proof-of-concept demonstrates that:

1. ✅ The SKILL.md template is complete and functional
2. ✅ The frontmatter validator works correctly
3. ✅ The format is maintainable (under 500 lines)
4. ✅ All metadata fields are properly documented
5. ✅ The structure supports AI discoverability
6. ✅ The migration approach is viable

Next Steps

1. Supervisor Review: Review all POC documents
2. Approval: Confirm approach and template
3. Phase 0 Start: Begin implementing validation tooling
4. Phase 1 Start: Migrate core testing skills (using this POC as template)

Related Documents

• Complete Specification - Full migration plan (951 lines)
• Supervisor Review Summary - Comprehensive review checklist

---

Status: COMPLETE - READY FOR SUPERVISOR REVIEW Created: 2025-12-20 Validation: ✅ All checks passed