# Edge Sync Completion Status

**Status:** Complete for the planned Edge/S3 Sync implementation brief  
**Branch:** `main`  
**Governing docs:**
- [`edge-s3-persistence.md`](./edge-s3-persistence.md)
- [`edge-sync-artifact-contract.md`](./edge-sync-artifact-contract.md)
- [`edge-sync-implementation-brief.md`](./edge-sync-implementation-brief.md)

## Summary

The Edge/S3 Sync track is complete for the planned six-slice scope defined in `edge-sync-implementation-brief.md`.

```text
Docs complete:                    3/3
Implementation slices complete:   6/6
Runtime integration:              intentionally not started
Live network tests:               prohibited
S3 in hot path:                   prohibited
Credentials in repo:              prohibited
Automatic epistemic promotion:    prohibited
```

The implementation establishes local contracts, validation, activation, journaling, an object-store seam, and an optional S3-compatible adapter. It does not integrate cloud/object storage into CORE's active cognition path.

## Completed documents

| Document | Status | Purpose |
|---|---:|---|
| `edge-s3-persistence.md` | Complete | Defines the edge-local / S3-cold split. |
| `edge-sync-artifact-contract.md` | Complete | Defines artifact classes, authority boundaries, manifests, and sync semantics. |
| `edge-sync-implementation-brief.md` | Complete | Defines the six-slice implementation plan. |

## Completed implementation slices

| Slice | Status | Files |
|---|---:|---|
| ES-0 / ES-1 — artifact authority model + contract tests | Complete | `core/sync/artifacts.py`, `tests/test_edge_sync_artifact_contract.py` |
| ES-2 — manifest parser/validator | Complete | `core/sync/manifest.py`, `tests/test_edge_sync_manifest.py` |
| ES-3 — activation ledger | Complete | `core/sync/activation.py`, `tests/test_edge_sync_activation.py` |
| ES-4 — local sync journal | Complete | `core/sync/journal.py`, `tests/test_edge_sync_journal.py` |
| ES-5 — object-store adapter seam | Complete | `core/sync/object_store.py`, `tests/test_edge_sync_hot_path_imports.py` |
| ES-6 — optional S3 adapter | Complete | `core/sync/s3_store.py`, `tests/test_edge_sync_s3_store.py` |

Package exports are collected in:

```text
core/sync/__init__.py
```

## Invariants now represented in code/tests

The completed implementation codifies these rules:

```text
Downloaded != activated.
Activated  != coherent.
Signed     != true.
```

And proves:

- artifact authority classes are closed;
- no edge-sync artifact is hot-path allowed;
- runtime-affecting artifacts require signature and activation;
- signed artifacts do not become admissible evidence by signature alone;
- fleet observations remain speculative unless promoted through proof/review;
- unknown artifact types reject;
- unsupported manifest schema versions reject;
- hash mismatch rejects;
- missing content digest rejects when bytes are supplied;
- malformed epistemic status defaults to speculative;
- downloaded artifacts remain inert until activated;
- activation does not confer evidence authority;
- activation and rollback emit audit records;
- local journal failures preserve retryable local state;
- hot-path packages are statically guarded from object-store/S3 imports;
- optional S3 behavior is tested with an injected fake client only.

## Verification command

Run the Edge/S3 Sync test set with:

```bash
pytest \
  tests/test_edge_sync_artifact_contract.py \
  tests/test_edge_sync_manifest.py \
  tests/test_edge_sync_activation.py \
  tests/test_edge_sync_journal.py \
  tests/test_edge_sync_hot_path_imports.py \
  tests/test_edge_sync_s3_store.py
```

## Scope intentionally not implemented

The following remain out of scope for this completed slice:

- live S3 credentials;
- live bucket access;
- background sync daemon;
- multipart upload;
- object-lock enforcement;
- fleet aggregation logic;
- runtime pack activation against real pack stores;
- motor/safety integration;
- automatic teaching-pack promotion;
- cloud-driven serving mutation;
- S3/object-store calls from hot-path cognition.

Any of the above requires a follow-on ADR, implementation brief, or explicit continuation plan.

## Hot-path boundary

The current static guard covers these hot-path directories:

```text
algebra/
chat/
generate/
vault/
core/physics/
```

They must not import:

```text
boto3
botocore
core.sync.object_store
core.sync.s3_store
```

Future hot-path directories should be added to the guard if the runtime boundary expands.

## Completion statement

The Edge/S3 Sync track is complete for the planned local-contract scope.

The result is a safe cloud/fleet persistence foundation that preserves CORE's edge-native law:

```text
Edge thinks and acts.
S3 remembers and distributes.
Truth still enters only by proof.
```
