engine-split-metric.yml

name: Engine Split Metric (ADR-0076 D7)

# Tracks the D7 repo-split trigger metric (#2462): the cross-package commit
# ratio of the ObjectQL engine core (engine.ts / registry.ts). The engine may
# only be extracted into its own repo once this ratio is low and stable
# (~88% at ADR time). Report-only — no gate until a threshold is agreed
# (ADR-0076 OQ#5); the ratio lands in the run's step summary.

on:
  schedule:
    - cron: '17 3 * * 1' # weekly, Monday 03:17 UTC
  workflow_dispatch: {}
  pull_request:
    paths:
      - 'scripts/check-engine-split-ratio.mjs'
      - '.github/workflows/engine-split-metric.yml'

permissions:
  contents: read

jobs:
  ratio:
    name: Engine cross-package commit ratio
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Checkout repository (full history)
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Compute ratio (90-day window)
        run: node scripts/check-engine-split-ratio.mjs --days 90