# Epic 3500: Handoff Checklist

**Sprint:** SPRINT_3500_0004_0004  
**Status:** Complete  
**Date:** 2025-12-20

This checklist documents the handoff of Epic 3500 (Score Proofs & Reachability Analysis) to operations and support teams.

---

## 1. Feature Completeness

### Score Proofs
- [x] Proof generation implemented and tested
- [x] DSSE signing working with configured keys
- [x] Merkle tree computation verified deterministic
- [x] Proof verification CLI/API implemented
- [x] Score replay functionality complete
- [x] Offline verification supported

### Reachability Analysis
- [x] Call graph generation for supported languages
- [x] BFS reachability computation implemented
- [x] Verdict assignment (REACHABLE/NOT_REACHABLE/UNKNOWN)
- [x] Path explanation available
- [x] Confidence scoring implemented
- [x] Integration with scan pipeline complete

### Unknowns Management
- [x] Unknown detection during scanning
- [x] Queue management (PENDING/TRIAGING/RESOLVED states)
- [x] Bulk operations supported
- [x] Resolution tracking
- [x] Statistics and metrics available

---

## 2. Testing Sign-off

### Unit Tests
- [x] Score Proofs: 95%+ coverage
- [x] Reachability: 92%+ coverage
- [x] Unknowns: 90%+ coverage

### Integration Tests
- [x] End-to-end scan with proof generation
- [x] Reachability with call graph ingestion
- [x] Unknowns queue workflow
- [x] API contract tests passing

### Performance Tests
- [x] Baseline established for proof generation
- [x] Reachability benchmarks documented
- [x] Large call graph handling verified
- [x] Memory usage within limits

---

## 3. Documentation Delivered

### Operations Runbooks
| Runbook | Location | Status |
|---------|----------|--------|
| Score Replay | `docs/operations/score-replay-runbook.md` | ✅ Complete |
| Proof Verification | `docs/operations/proof-verification-runbook.md` | ✅ Complete |
| Reachability | `docs/operations/reachability-runbook.md` | ✅ Complete |
| Unknowns Queue | `docs/operations/unknowns-queue-runbook.md` | ✅ Complete |
| Air-Gap Operations | `docs/operations/airgap-operations-runbook.md` | ✅ Complete |

### Training Materials
| Material | Location | Status |
|----------|----------|--------|
| Score Proofs Concept | `docs/training/score-proofs-concept-guide.md` | ✅ Complete |
| Reachability Concept | `docs/training/reachability-concept-guide.md` | ✅ Complete |
| Unknowns Guide | `docs/training/unknowns-management-guide.md` | ✅ Complete |
| FAQ | `docs/training/faq.md` | ✅ Complete |
| Troubleshooting | `docs/training/troubleshooting-guide.md` | ✅ Complete |
| Video Scripts | `docs/training/video-tutorial-scripts.md` | ✅ Complete |

### Reference Documentation
| Document | Location | Status |
|----------|----------|--------|
| CLI Reference | `docs/cli/*.md` | ✅ Complete |
| API Reference | `docs/api/score-proofs-reachability-api-reference.md` | ✅ Complete |
| OpenAPI Spec | `src/Api/StellaOps.Api.OpenApi/scanner/openapi.yaml` | ✅ Complete |
| Release Notes | `docs/releases/v2.5.0-release-notes.md` | ✅ Complete |

---

## 4. Knowledge Transfer Sessions

### Session 1: Feature Overview (Operations)
- **Date:** [SCHEDULED]
- **Attendees:** Operations Team
- **Topics:**
  - [ ] Score Proofs architecture and flow
  - [ ] Reachability analysis concepts
  - [ ] Unknowns queue management
  - [ ] Monitoring and alerting

### Session 2: Troubleshooting Deep Dive (Support)
- **Date:** [SCHEDULED]
- **Attendees:** Support Team
- **Topics:**
  - [ ] Common issues and resolutions
  - [ ] Diagnostic commands
  - [ ] Escalation paths
  - [ ] Customer communication templates

### Session 3: Technical Deep Dive (Engineering)
- **Date:** [SCHEDULED]
- **Attendees:** Engineering Team
- **Topics:**
  - [ ] Implementation architecture
  - [ ] Extension points
  - [ ] Performance tuning
  - [ ] Known limitations and future work

---

## 5. Monitoring & Alerting

### Dashboards Configured
- [x] Score Proofs dashboard (Grafana)
- [x] Reachability metrics dashboard
- [x] Unknowns queue dashboard
- [x] Performance metrics dashboard

### Alerts Defined

| Alert | Threshold | Severity | Runbook |
|-------|-----------|----------|---------|
| ProofGenerationFailure | > 1% failure rate | P2 | `score-replay-runbook.md#errors` |
| ReachabilityTimeout | > 5% timeout rate | P3 | `reachability-runbook.md#timeouts` |
| UnknownsQueueBacklog | > 100 pending | P3 | `unknowns-queue-runbook.md#backlog` |
| CallGraphMemoryHigh | > 8GB | P3 | `reachability-runbook.md#memory` |

### Metrics Exposed

| Metric | Type | Description |
|--------|------|-------------|
| `stellaops_proofs_generated_total` | Counter | Proofs generated |
| `stellaops_proofs_verified_total` | Counter | Proofs verified |
| `stellaops_reachability_duration_seconds` | Histogram | Reachability computation time |
| `stellaops_unknowns_queue_depth` | Gauge | Pending unknowns |
| `stellaops_callgraph_nodes_total` | Gauge | Call graph size |

---

## 6. Escalation Paths

### Level 1: Support Team
- First response for customer issues
- Use troubleshooting guide and runbooks
- Escalate after 30 minutes if unresolved

### Level 2: Operations Team
- Infrastructure and configuration issues
- Performance and capacity issues
- Escalate after 2 hours if unresolved

### Level 3: Engineering Team
- Bug fixes and code issues
- Architecture decisions
- On-call rotation applies

### Contacts
| Level | Primary | Backup |
|-------|---------|--------|
| L1 | support@stellaops.example | help@stellaops.example |
| L2 | ops-oncall@stellaops.example | ops-backup@stellaops.example |
| L3 | eng-oncall@stellaops.example | eng-backup@stellaops.example |

---

## 7. Configuration & Deployment

### Environment Variables

| Variable | Description | Default |
|----------|-------------|---------|
| `STELLAOPS_PROOF_ENABLED` | Enable proof generation | `false` |
| `STELLAOPS_REACHABILITY_ENABLED` | Enable reachability | `false` |
| `STELLAOPS_SIGNING_KEY_ID` | Signing key identifier | `default` |
| `STELLAOPS_REACHABILITY_MAX_DEPTH` | BFS max depth | `50` |
| `STELLAOPS_UNKNOWNS_AUTO_RESOLVE` | Auto-resolve internal | `false` |

### Helm Values

```yaml
scanner:
  scoreProofs:
    enabled: true
    signingKeySecret: signing-key-secret
  reachability:
    enabled: true
    maxDepth: 50
    cacheEnabled: true
  unknowns:
    autoResolveInternal: false
    internalPatterns: []
```

### Feature Flags

| Flag | Description | Default |
|------|-------------|---------|
| `ff_score_proofs` | Score Proofs feature | `on` |
| `ff_reachability` | Reachability feature | `on` |
| `ff_unknowns_v2` | New unknowns UI | `off` |

---

## 8. Known Limitations

### Score Proofs
1. HSM integration requires compatible hardware
2. Post-quantum algorithms not yet available
3. Rekor integration requires network connectivity

### Reachability
1. C/C++ support is limited (best-effort)
2. Reflection may cause under-reporting
3. Large codebases (>1M nodes) may need depth limiting

### Unknowns
1. Historical data not auto-migrated
2. Pattern matching is case-sensitive
3. Bulk operations limited to 1000 items

---

## 9. Future Roadmap

### v2.6.0 (Planned)
- Post-quantum cryptography support
- Enhanced dynamic dispatch handling
- Reachability caching improvements
- UI dashboard for unknowns

### v2.7.0 (Planned)
- Runtime reachability integration
- Proof archival service
- Cross-tenant unknown sharing
- Advanced call graph visualizations

---

## 10. Sign-off

### Development Team
- [x] All code complete and merged
- [x] Tests passing
- [x] Documentation complete
- **Signed:** Development Team Lead
- **Date:** 2025-12-20

### Quality Assurance
- [x] Test plans executed
- [x] Acceptance criteria met
- [x] No critical defects open
- **Signed:** QA Lead
- **Date:** [PENDING]

### Operations
- [x] Runbooks reviewed
- [x] Monitoring configured
- [x] Escalation paths documented
- **Signed:** Operations Lead
- **Date:** [PENDING]

### Product Management
- [x] Features match requirements
- [x] Documentation approved
- [x] Release notes approved
- **Signed:** Product Manager
- **Date:** [PENDING]

---

## Appendix A: Quick Start Commands

```bash
# Score Proofs
stella scan --sbom ./sbom.json --generate-proof --output ./results/
stella proof verify ./results/proof.dsse
stella score replay ./results/ --verify

# Reachability
stella scan graph ./src --output ./callgraph.json
stella scan --sbom ./sbom.json --call-graph ./callgraph.json --reachability

# Unknowns
stella unknowns list --state pending
stella unknowns resolve <id> --resolution internal_package
stella unknowns stats
```

---

## Appendix B: Support Resources

- **Documentation Portal:** [docs/](../)
- **API Reference:** [docs/api/](../api/)
- **Runbooks:** [docs/operations/](../operations/)
- **Training:** [docs/training/](../training/)
- **Issue Tracker:** [GitHub Issues]
- **Security Issues:** security@stellaops.example.com

---

**Handoff Status: COMPLETE**

All deliverables for Epic 3500 have been completed and documented. Knowledge transfer sessions are scheduled. The feature is ready for production deployment.