# SPRINT_4300 MOAT HARDENING: Verdict Attestation & Epistemic Mode

## Program Overview

| Field | Value |
|-------|-------|
| **Program ID** | 4300 (Moat Series) |
| **Theme** | Moat Hardening: Signed Verdicts & Epistemic Operations |
| **Priority** | P0-P1 (Critical to High) |
| **Total Effort** | ~9 weeks |
| **Advisory Source** | 19-Dec-2025 - Stella Ops candidate features mapped to moat strength |

---

## Strategic Context

This sprint program addresses the highest-moat features identified in the competitive analysis advisory. The goal is to harden StellaOps' structural advantages in:

1. **Signed, replayable risk verdicts (Moat 5)** — The anchor differentiator
2. **Unknowns as first-class state (Moat 4)** — Governance primitive
3. **Air-gapped epistemic mode (Moat 4)** — Reproducibility moat

---

## Sprint Breakdown

### P0 Sprints (Critical)

| Sprint ID | Title | Effort | Moat |
|-----------|-------|--------|------|
| 4300_0001_0001 | OCI Verdict Attestation Referrer Push | 2 weeks | 5 |
| 4300_0001_0002 | One-Command Audit Replay CLI | 2 weeks | 5 |

**Outcome**: Verdicts become portable "ship tokens" that can be pushed to registries and replayed offline.

### P1 Sprints (High)

| Sprint ID | Title | Effort | Moat |
|-----------|-------|--------|------|
| 4300_0002_0001 | Unknowns Budget Policy Integration | 2 weeks | 4 |
| 4300_0002_0002 | Unknowns Attestation Predicates | 1 week | 4 |
| 4300_0003_0001 | Sealed Knowledge Snapshot Export/Import | 2 weeks | 4 |

**Outcome**: Uncertainty becomes actionable through policy gates and attestable for audits. Air-gap customers get sealed knowledge bundles.

---

## Related Sprint Programs

| Program | Theme | Moat Focus |
|---------|-------|------------|
| **4400** | Delta Verdicts & Reachability Attestations | Smart-Diff, Reachability |
| **4500** | VEX Hub & Trust Scoring | VEX Distribution Network |
| **4600** | SBOM Lineage & BYOS | SBOM Ledger |

---

## Dependency Graph

```
SPRINT_4300_0001_0001 (OCI Verdict Push)
         │
         ├──► SPRINT_4300_0001_0002 (Audit Replay CLI)
         │
         └──► SPRINT_4400_0001_0001 (Signed Delta Verdict)

SPRINT_4300_0002_0001 (Unknowns Budget)
         │
         └──► SPRINT_4300_0002_0002 (Unknowns Attestation)

SPRINT_4300_0003_0001 (Sealed Snapshot)
         │
         └──► [Standalone, enables air-gap scenarios]
```

---

## Success Metrics

| Metric | Target | Measurement |
|--------|--------|-------------|
| Verdict push success rate | >99% | OTEL metrics |
| Audit replay pass rate | 100% on same inputs | CI tests |
| Unknown budget violations detected | >0 in test suite | Integration tests |
| Air-gap import success rate | >99% | Manual testing |

---

## Risks & Dependencies

| Risk | Impact | Mitigation |
|------|--------|------------|
| OCI registry incompatibility | Cannot push verdicts | Fallback to tag-based |
| Bundle size too large | Transfer issues | Streaming, compression |
| Key management complexity | Security | Document rotation procedures |

---

## Timeline Recommendation

**Phase 1 (Weeks 1-4)**: P0 Sprints
- OCI Verdict Push + Audit Replay

**Phase 2 (Weeks 5-7)**: P1 Sprints
- Unknowns Budget + Attestations

**Phase 3 (Weeks 8-9)**: P1 Sprints
- Sealed Knowledge Snapshots

---

## Documentation Deliverables

- [ ] `docs/operations/verdict-attestation-guide.md`
- [ ] `docs/operations/audit-replay-guide.md`
- [ ] `docs/operations/unknown-budgets-guide.md`
- [ ] `docs/operations/airgap-knowledge-sync.md`
- [ ] Update attestation type catalog
- [ ] Update CLI reference

---

**Sprint Series Status:** TODO

**Created:** 2025-12-22
**Origin:** Gap analysis of 19-Dec-2025 moat strength advisory