format-check.yml

# vendor-kit: format-check@532ab00f3fa5 — generated; edit packages/km-infra/vendor-kit/templates/format-check.yml in km, then re-sync
name: format-check

# Per-push formatter-idempotency gate — asserts the formatter produces a clean
# tree against HEAD, so non-idempotent formatter regressions are caught before
# they pollute downstream consumers.

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

concurrency:
  group: format-check-${{ github.ref }}
  cancel-in-progress: true

jobs:
  format-check:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v4
      - uses: oven-sh/setup-bun@v2
        with:
          bun-version: 1.3.13
      - run: bun install --frozen-lockfile
      - name: Format and assert clean tree
        run: |
          bunx oxfmt .
          if ! git diff --quiet; then
            echo "::error::formatter produced changes — run bunx oxfmt . and commit"
            git diff --stat
            exit 1
          fi