drep-ai 2.7.2

A local commit gate: runs the linters your repo configures, and sends changed code to an LLM for review
Documentation 
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name: mutants

# This repository is public. Only a successful push validation on main may
# execute the expensive full sweep on the homelab runner. The job-level event
# check is load-bearing: a skipped pull-request validation can still conclude
# successfully, including for a fork branch named `main`.
on:
  workflow_run:
    workflows: [rust]
    types: [completed]
    branches: [main]

permissions:
  contents: read

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

env:
  CARGO_TERM_COLOR: always

jobs:
  # A full sweep catches coverage weakened by test-only changes outside the
  # production diff. The pre-commit hook remains staged for fast local feedback;
  # this main-only lane is the comprehensive backstop.
  mutants:
    if: github.event.workflow_run.event == 'push' && github.event.workflow_run.conclusion == 'success'
    runs-on: [self-hosted, linux, x64, homelab-2, drep-mutants]
    # Mutation has its own bounded runner. Validation and release retain the
    # drep-linux owner on homelab-1, so a full sweep cannot occupy their only
    # runner or compete with production workloads.
    timeout-minutes: 180
    steps:
      # Keeping target/ makes the mutation-host run take minutes instead of
      # hours. Everything else must still be an exact checkout: unexpected
      # ignored or untracked state fails closed rather than influencing a sweep.
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          clean: false
          persist-credentials: false
          ref: ${{ github.event.workflow_run.head_sha }}

      - name: Verify persistent workspace hygiene
        shell: bash
        run: |
          set -euo pipefail
          unexpected="$(
            git status --porcelain=v1 --untracked-files=all --ignored=matching |
              grep -Ev '^!! target/$' || true
          )"
          if [ -n "$unexpected" ]; then
            echo "unexpected persistent runner state:" >&2
            echo "$unexpected" >&2
            exit 1
          fi

      - uses: dtolnay/rust-toolchain@4360b52568e2003a75bf9bc1d59f33a8e3fc893c # stable
        with:
          toolchain: stable

      - uses: taiki-e/install-action@1ed6d7be6168f6c9046541087ff549b6bc581fdf # v2.87.2
        with:
          tool: cargo-mutants@27.1.0

      # scripts/mutants-run.sh owns the verdict, including the distinction
      # between a detected timeout and a genuinely missed mutant.
      - run: ./scripts/mutants-run.sh