name: Sync repo labels

# Declaratively syncs labels listed in .github/labels.yml.
# Additive only: labels not listed here are left untouched (delete-other-labels: false).
# Lifecycle labels (needs-codeowner-review, awaiting-author, awaiting-codeowner) are
# created by this workflow but toggled per-PR by .github/workflows/pr-triage.yml.

on:
  push:
    branches: [main]
    paths:
      - '.github/labels.yml'
      - '.github/workflows/labels-sync.yml'
  workflow_dispatch:

# No concurrency group — intentionally omitted, matching .github/workflows/label-fixed-in-dev.yml.
# Previous attempts (#3554, reverted #3599) showed that cancel-in-progress on label workflows
# kills useful in-flight runs. Sync is idempotent so concurrent runs are safe.

permissions: {}  # Minimal top-level for OSSF Scorecard Token-Permissions

jobs:
  sync-labels:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    permissions:
      contents: read
      issues: write
    steps:
      - name: Harden the runner (Audit all outbound calls)
        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
        with:
          egress-policy: audit

      - name: Checkout
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
          sparse-checkout: .github/labels.yml
          sparse-checkout-cone-mode: false

      - name: Sync labels
        uses: EndBug/label-sync@52074158190acb45f3077f9099fea818aa43f97a # v2.3.3
        with:
          config-file: .github/labels.yml
          delete-other-labels: false