GA-B002: Missing concurrency group

Info Best Practice

Why This Matters

Without a `concurrency:` group, multiple workflow runs for the same branch or PR execute simultaneously, wasting resources. A concurrency group with `cancel-in-progress: true` automatically cancels outdated runs.

How to Fix

Add a concurrency group to the workflow

Before (incorrect)

name: CI
on: push

After (correct)

name: CI
on: push
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

Rule Details

Rule Code: GA-B002
Severity: Info
Category: Best Practice

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Missing timeout-minutes

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