# Phases 4-6: Supply Chain Security, CLI Workflow, Testing & Release

---

## Phase 4: Supply Chain Security & Code Signing

**Planned Start**: April 25, 2026  
**Estimated Duration**: 5-7 days  
**Status**: Planning Phase  
**Owner**: Security Lead  

### 4.1 Objectives
- Implement code signing for skill artifacts
- Set up provenance tracking
- Create SBOM (Software Bill of Materials)
- Document security posture

### 4.2 Deliverables

#### 4.2.1 Code Signing Setup
```
- Generate signing keys for skill artifacts
- Configure GitHub Actions to sign skills on commit
- Validate signatures in validation script
- Document key rotation policy
```

#### 4.2.2 Provenance Metadata
```yaml
---
name: accessibility-rules
description: Cross-format accessibility rule reference with WCAG 2.2 mapping
gh:
  repository: Community-Access/accessibility-agents
  signing:
    enabled: true
    algorithm: ECDSA
    keyId: accessibility-agents-2026
  provenance:
    created: 2026-04-16
    modified: 2026-04-16
    signer: gh@accessibility-agents
    signatureUrl: https://github.com/.../.../sign/skills/accessibility-rules
---
```

#### 4.2.3 SBOM Generation
- Create JSON SBOM for each skill
- Document all external dependencies referenced
- Version all transitive dependencies
- Generate CycloneDX format reports

#### 4.2.4 Security Policy Documentation
- Create SECURITY-SKILLS.md in .github/
- Document vulnerability disclosure process
- Define security support timeline
- Publish threat model & risk assessment

### 4.3 Acceptance Criteria
- [ ] All skills signed with valid signatures
- [ ] SBOM generated for each skill
- [ ] Validation script verifies signatures
- [ ] Security documentation complete
- [ ] Zero unsigned skill artifacts

### 4.4 Success Metrics
| Metric | Target |
|--------|--------|
| Code Signing Coverage | 100% (25/25 skills) |
| SBOM Completeness | 100% |
| Security Documentation | Complete & published |
| Signature Verification Rate | 100% on CI |

---

## Phase 5: CLI Workflow & Publishing Preparation

**Planned Start**: May 2, 2026  
**Estimated Duration**: 3-5 days  
**Status**: Planning Phase  
**Owner**: CLI Lead  

### 5.1 Objectives
- Create gh skill install workflow
- Document publishing process
- Set up GitHub Skills registry integration
- Prepare for public listing

### 5.2 Deliverables

#### 5.2.1 gh CLI Command Integration
```bash
# Installation command users will run
gh skill install Community-Access/accessibility-agents/github-analytics-scoring

# Output:
# Cloning into '.config/gh/skills/github-analytics-scoring'...
# Registering skill: github-analytics-scoring
# ✓ Skill installed successfully
# ✓ Ready to use: /github-analytics-scoring <args>
```

#### 5.2.2 Skill Registry Configuration
```json
{
  "registry": {
    "url": "https://github.com/Community-Access/accessibility-agents/releases/download/skills",
    "format": "tar.gz",
    "verification": "ECDSA",
    "authentication": "optional"
  },
  "skills": [
    {
      "name": "github-analytics-scoring",
      "path": ".github/skills/github-analytics-scoring",
      "version": "5.0.0",
      "checksum": "sha256:...",
      "signature": "...pem"
    }
  ]
}
```

#### 5.2.3 Installation Instructions
- Update README.md with gh cli commands
- Create INSTALL-SKILLS.md guide
- Document prerequisites (gh cli version 2.48+)
- Provide troubleshooting section

#### 5.2.4 GitHub Skills Directory Listing
- Submit skills to GitHub directory
- Complete listing metadata
- Upload skill icons/logos
- Enable community feedback

### 5.3 Acceptance Criteria
- [ ] gh skill install command works
- [ ] Skills resolve from registry
- [ ] Installation completes in <30s
- [ ] Skill documentation discoverable in gh
- [ ] Directory listing approved

### 5.4 Success Metrics
| Metric | Target |
|--------|--------|
| Installation Success Rate | 100% |
| Install Time | <30s |
| Registry Availability | 99.9% uptime |
| Directory Listing | Active & discoverable |

---

## Phase 6: Testing & Public Release

**Planned Start**: May 7, 2026  
**Estimated Duration**: 7-10 days  
**Status**: Planning Phase  
**Owner**: Release Manager  

### 6.1 Objectives
- Comprehensive testing across platforms
- Community beta testing program
- Final documentation review
- Public release on GitHub Skills directory

### 6.2 Deliverables

#### 6.2.1 Testing Strategy

**Unit Tests**
```javascript
// tests/skills.validation.test.js
describe('Skill Validation', () => {
  test('All 25 skills pass validation', () => {
    const result = validateSkills('.github/skills/*');
    expect(result.errors).toBe(0);
    expect(result.warnings).toBe(0);
  });
  
  test('Description length <200 chars', () => {
    const skills = loadSkills('.github/skills/*');
    skills.forEach(skill => {
      expect(skill.description.length).toBeLessThan(200);
    });
  });
});
```

**Integration Tests**
```bash
# Test real gh cli installation
gh skill install Community-Access/accessibility-agents/github-analytics-scoring
gh github-analytics-scoring --validate

# Test cross-platform compatibility
# - macOS (Intel & Apple Silicon)
# - Windows (PowerShell & WSL2)
# - Linux (Ubuntu, Fedora, etc.)
```

**Manual Testing Checklist**
- [ ] Skill installation on macOS
- [ ] Skill installation on Windows (native)
- [ ] Skill installation on Windows (WSL2)
- [ ] Skill installation on Linux (Ubuntu)
- [ ] CLI help & documentation accessible
- [ ] Skill auto-completion working
- [ ] Error handling & recovery tested
- [ ] Network timeout scenarios tested

#### 6.2.2 Beta Testing Program
- Recruit 10-20 beta testers
- Provide pre-release access to skills
- Collect feedback on usability, documentation, bugs
- Document all reported issues
- Create issue triage & prioritization

#### 6.2.3 Community Feedback Integration
- Open beta testing issue on GitHub
- Create Discord/Slack channel for feedback
- Weekly summary of feedback & iterations
- Publish beta test results report

#### 6.2.4 Documentation Finalization
- README.md updated with examples
- INSTALL-SKILLS.md complete & tested
- Troubleshooting guide comprehensive
- FAQ document created
- Video tutorial recorded (optional)

#### 6.2.5 Release Checklist
```markdown
- [ ] All tests passing (unit, integration, manual)
- [ ] No known regressions from Phase 2
- [ ] Documentation reviewed & approved
- [ ] Security audit completed
- [ ] Performance benchmarked
- [ ] Accessibility compliance verified
- [ ] Beta feedback addressed
- [ ] Release notes written
- [ ] Community notification plan ready
- [ ] Support structure in place
```

#### 6.2.6 Release Announcement
- Blog post: "Introducing GitHub Skills for Accessibility"
- Tweet thread highlighting key features
- GitHub Discussion post for questions
- Community calls/webinars scheduled
- Press release for accessibility community

### 6.3 Acceptance Criteria
- [ ] 100% test pass rate (unit, integration, manual)
- [ ] Beta testing completed with feedback addressed
- [ ] Documentation fully reviewed & approved
- [ ] Security & performance audits passed
- [ ] No blocking issues identified
- [ ] Release notes complete & published
- [ ] Community support channels ready

### 6.4 Success Metrics

| Metric | Target | Success Criteria |
|--------|--------|------------------|
| **Test Coverage** | >95% | All critical paths covered |
| **Test Pass Rate** | 100% | No failures on release |
| **Beta Feedback Score** | >4.5/5 | Strong community approval |
| **Installation Success** | 100% | All test cases succeed |
| **Documentation Quality** | >4/5 | Clear, comprehensive, accurate |
| **Performance** | <30s install | Fast, responsive |
| **Day-1 Adoption** | >100 installs | Strong community interest |
| **Support Response Time** | <24 hours | Active support team |

---

## Combined Timeline: Phases 4-6

```
May 1  |---- PHASE 4: Supply Chain Security (5-7d) ----|
May 6  |---- PHASE 5: CLI Workflow (3-5d) ----|
May 10 |---- PHASE 6: Testing & Release (7-10d) ----|
May 20 |✓ PUBLIC RELEASE ON GITHUB SKILLS DIRECTORY
```

---

## Integration Points Between Phases

```
Phase 3 (Validation) 
    ↓
    Outputs: Validation scripts, compliance reports
    ↓
Phase 4 (Security)
    ├─ Uses: Validation script for signature verification
    ├─ Produces: Signed artifacts, SBOM, security policy
    ↓
Phase 5 (CLI Integration)
    ├─ Uses: Signed artifacts, security policy
    ├─ Produces: Registry configuration, install commands
    ↓
Phase 6 (Testing & Release)
    ├─ Uses: Registry, install commands, documentation
    ├─ Produces: Test results, release announcement
    ↓
PUBLIC RELEASE
```

---

## Resource Requirements

### Phase 4 (Supply Chain Security)
- Security Engineer: 5-7 days full-time
- Infrastructure: GPG/ECDSA key generation infrastructure
- Tools: signify, SBOM generators (cyclonedx-npm, etc.)

### Phase 5 (CLI Workflow)
- CLI Developer: 3-5 days full-time
- GitHub Registry Team: Consultation (async)
- Documentation Writer: 1-2 days

### Phase 6 (Testing & Release)
- QA Engineer: 7-10 days full-time
- Community Manager: 5 days (beta coordination)
- Release Manager: 3-5 days (release coordination)
- Technical Writer: 3-5 days (documentation finalization)

### Total Team Capacity Needed
- 25-30 person-days of engineering effort
- 10-15 person-days of non-engineering effort
- ~6-8 weeks of calendar time

---

## Success Criteria: All Phases Complete

### Technical Success
- ✓ Phase 1: All 25 skills pass structural validation
- ✓ Phase 2: All descriptions <200 chars
- [ ] Phase 3: All resources verified, documentation complete
- [ ] Phase 4: All skills signed, SBOM generated
- [ ] Phase 5: gh install workflow functional
- [ ] Phase 6: All tests passing, public release ready

### Quality Metrics
- ✓ 0 critical bugs
- ✓ 0 security vulnerabilities
- [ ] >95% test coverage
- [ ] <5% post-release issues
- [ ] >4/5 community satisfaction

### Community Metrics
- [ ] >100 Day-1 installations
- [ ] >500 Week-1 installations
- [ ] <24h support response time
- [ ] Active community feedback & contributions

---

## Risk Management for Later Phases

| Risk | Mitigation |
|------|-----------|
| Security key compromise | Multi-key strategy, key rotation policy |
| Registry downtime | Mirror registry, fallback distribution |
| Low community adoption | Strong marketing, clear documentation |
| Performance regression | Continuous benchmarking, load testing |
| Compatibility issues | Extensive matrix testing, CI/CD validation |

---

## Approval & Sign-Off

| Phase | Approval Required | Owner | ETA |
|-------|------------------|-------|-----|
| Phase 3 | Script Lead + QA | (TBD) | Apr 24 |
| Phase 4 | Security Lead | (TBD) | May 2 |
| Phase 5 | CLI Lead | (TBD) | May 9 |
| Phase 6 | Release Manager | (TBD) | May 20 |

---

## Appendix: GitOps Commands

### For Phase 4 (Security)
```bash
# Generate signing key
gh secret create GH_SKILLS_SIGNING_KEY --body "$(cat key.pem)"

# Configure Actions secrets for signing
gh variable create SKILL_SIGNING_ENABLED --body "true"
```

### For Phase 5 (CLI)
```bash
# Install skills locally
gh skill install Community-Access/accessibility-agents/github-analytics-scoring
gh skill install Community-Access/accessibility-agents/github-scanning

# List installed skills
gh skill list

# Get skill help
gh github-analytics-scoring --help
```

### For Phase 6 (Release)
```bash
# Create release with signed artifacts
gh release create v5.0.0 \
  --title "GitHub Skills v5.0: Accessibility Suite" \
  --notes-file RELEASE-NOTES.md \
  --prerelease \
  ./dist/*.tar.gz

# Publish to registry
gh release publish v5.0.0 --latest
```

