# Joule Code Conformance Vector Pack — Version Matrix

Tracks the correspondence between vector-pack versions and Joule Code spec versions.

## Matrix

| Vector pack | Spec version | Spec source        | Status | Notes                                                              |
| ----------- | ------------ | ------------------ | ------ | ----------------------------------------------------------------- |
| `v1/`       | v0.1.0-draft | [`../SPEC.md`](../SPEC.md) | DRAFT  | Reference vectors; regenerated against `joule-code-rs` (see `v1/regeneration.md`). |

Future entries are appended below this table when a new spec version is introduced. Older entries are never removed.

## Version compatibility rules

1. **Per-spec-major-version packs.** Each major spec version has exactly one vector-pack directory (`v1/`, `v2/`, ...). The pack is the canonical conformance suite for that spec version.
2. **No backporting of incompatible vectors.** A vector depending on wire-format behaviour introduced in a later spec version is never added to an earlier pack.
3. **Suites are additive within a pack.** New positive/negative vectors may be added to an existing pack as long as they conform to that pack's spec version; a previously-passing implementation must continue to pass.