mui/material-ui GitHub Actions scorecard

# No concurrency control (applies to: CI, CI Check, Maintenance, No response, Mark duplicate)
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

# Workflow runs on both push and pull_request (applies to: CI Check)
on:
  push:
    branches: [main]
  pull_request:

# No job timeout (applies to: Maintenance, CI, Support Stack Overflow, Check if PR has label, No response, CodeQL, Mark duplicate, Scorecards supply-chain security, CI Check, Priority Support Validation Prompt, Add closing message to issue, Create cherry-pick PR)
jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 15

# No path filters on triggers (applies to: Maintenance)
on:
  pull_request:
    paths:
      - 'src/**'
      - 'package.json'

# Premium runners (macOS / Windows) (applies to: CI, CI Check)
jobs:
  build:
    runs-on: ubuntu-latest  # ~10x cheaper than macos-latest

# Scheduled at the top of the hour (applies to: No response)
on:
  schedule:
    - cron: '27 0,12 * * *'  # was '0 0,12 * * *' — any non-:00 minute avoids the herd

# Scheduled workflow runs in forks (applies to: No response, CodeQL, Scorecards supply-chain security)
jobs:
  nightly:
    if: github.repository == 'owner/repo'
    runs-on: ubuntu-latest

# Scheduled at the top of the hour (applies to: CodeQL)
on:
  schedule:
    - cron: '29 2 * * *'  # was '0 2 * * *' — any non-:00 minute avoids the herd

# Scheduled at the top of the hour (applies to: Scorecards supply-chain security)
on:
  schedule:
    - cron: '31 2 * * *'  # was '0 2 * * *' — any non-:00 minute avoids the herd

Each snippet is representative. Merge into the named workflow files rather than pasting wholesale.