# Round 3 Summary: Local-Production Parity (Final Convergence)

**ALIGNMENT Score**: +289 (Velocity: +46, Total: 289) | **Panel**: 3 experts | **Status**: 100% CONVERGED

## Open Items Resolved

### O0001: Test Vector Generation (Palmier)

**RESOLUTION**: Hybrid approach with three layers

| Layer | Source | Purpose |
|-------|--------|---------|
| 1 | NIST CAVP KAT | Verify AES-256-GCM primitives |
| 2 | Python `cryptography` reference | Envelope format conformance |
| 3 | Property-based tests | Round-trip fuzzing |

**Deliverables**:
- `tests/crypto/test_aes_gcm_nist_kat.rs`
- `tests/crypto/test_envelope_vectors.rs`
- `scripts/generate_test_vectors.py` (committed with hash)

---

### O0002: Local Key Rotation (Cupcake)

**RESOLUTION**: Local keys are NEVER rotated

**Rationale**: Local development data is disposable. Adding rotation machinery for test data violates YAGNI.

**Behavior**:
```
If UMK changes/missing:
  1. CLI detects decrypt failure
  2. Prompts: "Reset local database? [y/N]"
  3. Yes → wipe + fresh key
  4. No → abort with recovery instructions
```

**Documentation**: Add clear warning that local data is not durable.

---

### O0003: Crypto Audit + Trace Context (Cannoli)

**RESOLUTION**: Include trace_id with hash chain for tamper-evidence

```rust
struct CryptoAuditEvent {
    event_id: Uuid,
    timestamp: DateTime<Utc>,
    trace_id: String,          // For correlation
    span_id: String,
    operation: CryptoOp,
    key_id: String,
    principal: String,
    outcome: Outcome,
    previous_hash: String,     // Chain integrity
    event_hash: String,        // SHA-256(all above)
}
```

**Constraints**:
- Append-only storage (PutItem only, no modify/delete)
- Daily chain verification job
- Alert on hash discontinuity

---

## Final Convergence Checklist

| Item | Status | Resolution |
|------|--------|------------|
| Docker required | ✅ RESOLVED | Mandatory for all developers |
| DynamoDB Local only | ✅ RESOLVED | No SQLite fallback |
| KeyProvider trait | ✅ RESOLVED | LocalFile + AwsKms implementations |
| Test strategy | ✅ RESOLVED | Two-layer + NIST KAT + property tests |
| Observability | ✅ RESOLVED | Config-driven, same everywhere |
| DynamoDB schema | ✅ RESOLVED | Single table, endpoint override only |
| Docker infrastructure | ✅ RESOLVED | justfile + docker-compose.yml |
| Test vector generation | ✅ RESOLVED | Hybrid: NIST + reference + property |
| Local key rotation | ✅ RESOLVED | Never rotated, disposable |
| Audit trace correlation | ✅ RESOLVED | Hash chain + trace_id |

## Expert Signals

- **Cupcake**: [MOVE:CONVERGE] "O0002 resolved. Ready for final convergence check."
- **Palmier**: [MOVE:CONVERGE] "O0001 resolved. Ready for implementation."
- **Cannoli**: [MOVE:CONVERGE] "O0003 is resolved. Ready to proceed to implementation."

---

## VERDICT: 100% CONVERGENCE ACHIEVED

**Zero open tensions. Zero open items. All experts signal CONVERGE.**

The dialogue has completed. Ready to draft final RFC for `blue-encrypted-store` crate.

---

## Dialogue Statistics

| Metric | Value |
|--------|-------|
| Rounds | 3 |
| Total Experts | 10 unique |
| Perspectives Registered | 28 |
| Tensions Surfaced | 6 |
| Tensions Resolved | 6 |
| Open Items Resolved | 3 |
| Final ALIGNMENT Score | 289 |

---

*"True parity means the code you test is the code you ship."*