name: Verify Protocol

on:
  push:
  pull_request:
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: protocol-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  verify:
    # The Phase 3A full verifier includes Swift type-checking. The owner must
    # provide a macOS runner with the pinned toolchain from the handoff.
    runs-on: macos-26
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v7
      - name: Assert pinned toolchain
        shell: bash
        run: |
          python3 --version
          go version | grep -F 'go1.26.5 '
          protoc --version | grep -F 'libprotoc 35.1'
          buf --version | grep -F '1.72.0'
          rustc --version | grep -F '1.97.1'
          swift --version | grep -F 'Swift version 6.3.3'
      - name: Verify generation, breaking policy, scope, and conformance
        run: make verify
      - name: Verify clean regeneration
        run: git diff --exit-code