# 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](https://code.visualstudio.com/docs/copilot/customization/agent-skills)
- The SKILL.md **format** follows the [agentskills.io specification](https://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](./test-backend-coverage.SKILL.md) | Complete, validated SKILL.md example | ✅ Validated |
| [validate-skills.py](./validate-skills.py) | Frontmatter validation tool | ✅ Functional |
| [SUPERVISOR_REVIEW_SUMMARY.md](./SUPERVISOR_REVIEW_SUMMARY.md) | Complete review summary for Supervisor | ✅ Complete |

## Quick Validation

### Validate the Proof-of-Concept SKILL.md

```bash
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](../current_spec.md) - Full migration plan (951 lines)
- [Supervisor Review Summary](./SUPERVISOR_REVIEW_SUMMARY.md) - Comprehensive review checklist

---

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