# CommitBrief v0.8.0

> Quality & diagnostics. `doctor`, `install-hook`, secret scanner, cost preflight, `--fail-on`, `--compact`.

Released May 22, 2026

Canonical URL: https://commitbrief.com/changelog/v0.8.0/

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## Added

- **`commitbrief install-hook` subcommand** — one-command scaffold
  for a git hook running
  `commitbrief --staged --fail-on=critical --quiet --no-cost-check`
  on every commit. Default target `.git/hooks/pre-commit`; `--hook`
  chooses `commit-msg` or `pre-push`. Existing files refused unless
  `--yes`; prior content backed up to `<name>.bak.<timestamp>`.
  `--uninstall` removes the hook only when the embedded marker is
  present.
- **`--fail-on=<severity>` flag** — CI-actionable exit code gate.
  Accepted values: `critical`, `high`, `medium`, `low`, `info`,
  `any`, `none`. The rendered review prints before the exit code
  is decided.
- **`commitbrief doctor` subcommand** — runs ~7 health checks
  against the resolved environment: git binary, config schema,
  COMMITBRIEF.md source, OUTPUT.md template validity, active
  provider credentials, cache writability, `.gitignore` includes
  `.commitbrief/`. Per-check ✓/⚠/✗ glyphs; exit 1 on any failure.
- **Pre-send secret scanner.** Eight patterns ship by default
  (AWS, GitHub, GitLab, OpenAI, Anthropic, JWT, Stripe, PEM private
  key). Only `+` prefixed (newly added) lines are scanned; the
  matched substring is **never** echoed to stderr or any cached
  payload. `--allow-secrets` bypasses with an info notice.
- **Cost preflight** — before each fresh provider call, estimates
  cost from prompt tokens × per-model pricing. Above
  `cost.warn_threshold_usd` (default `$0.50`), prompts the user on
  a TTY or aborts non-interactively. New `--no-cost-check` flag.
- **`commitbrief list` config summary footer** — shows active
  provider/model, source of COMMITBRIEF.md and OUTPUT.md, and local
  cache footprint.
- **`--compact` flag** for one-line-per-finding rendering —
  `[icon] SEVERITY • file:line — title`.

## Changed

- **Diff-colored snippets** — when a finding includes a code excerpt
  with `-` / `+` prefixed lines, the renderer colors removals red
  and additions green; context stays muted.
- **High-contrast card text** — adaptive foreground (near-white on
  dark terminals, near-black on light) fixes legibility against
  severity-tinted backgrounds.