helen 0.1.0

Repository review gate.
Documentation
# Helen

Elenchus for proposed commits.

```sh
helen elenchus "refactor(elenchus): Preserve reviewed intent"
```

```sh
ELENCHUS_TEST_CMD="cargo test -p helen" \
  helen elenchus "test(elenchus): Cover approval reuse"
```

```sh
ELENCHUS_DRY_RUN=1 \
  helen elenchus "refactor(cli): Split command dispatch"
```

```sh
ELENCHUS_MAX_LINES=6000 \
  helen elenchus "refactor(runtime): Split host boundary"
```

```sh
ELENCHUS_RETAIN_ATTEMPTS=24 \
ELENCHUS_KEEP_REVIEW_TRANSCRIPT=1 \
  helen elenchus "fix(review): Preserve transcript evidence"
```

```sh
helen elenchus "refactor(auth): Rotate token storage"
helen elenchus approve
```

```gitignore
.helen/elenchus/
```

```text
.helen/elenchus/
|-- attempts/
`-- reviews/<diff-fingerprint>/
```