piano 0.15.0

Automatic instrumentation-based profiler for Rust. Measures self-time, call counts, and heap allocations per function.
Documentation 
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name: Release

on:
  pull_request:
    branches: [main]

jobs:
  version-bump-scope:
    if: startsWith(github.head_ref, 'release/')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check version bump commits only touch allowed files
        run: |
          base=${{ github.event.pull_request.base.sha }}
          head=${{ github.event.pull_request.head.sha }}

          allowed="Cargo.lock Cargo.toml piano-runtime/Cargo.toml CHANGELOG.md"
          failed=0

          for sha in $(git log --format=%H "$base".."$head"); do
            msg=$(git log -1 --format=%s "$sha")

            case "$msg" in
              "chore(cargo): bump version"*)
                files=$(git diff-tree --no-commit-id --name-only -r "$sha" | sort)
                allowed_sorted=$(echo "$allowed" | tr ' ' '\n' | sort)

                extra=$(comm -23 <(echo "$files") <(echo "$allowed_sorted"))
                if [ -n "$extra" ]; then
                  echo "::error::Commit $sha ($msg) touches files outside the version bump scope:"
                  echo "$extra" | while read -r f; do echo "  - $f"; done
                  failed=1
                fi
                ;;
            esac
          done

          if [ "$failed" -eq 1 ]; then
            echo ""
            echo "Version bump commits may only change: $allowed"
            echo "Move other changes (docs, etc.) to separate commits."
            exit 1
          fi