name: Extensions CI

# Guards the builtin-extension platform. The pre-bundled plugin frontends under
# frontend/src/plugins/<slug>/ are build artifacts of builtin-extensions/<slug>/
# frontend/ (decision D5 in docs/plans/12_EXTENSIONS_PLATFORM_PLAN.md). They used
# to be hand-duplicated and silently drifted; this job fails the build if the
# artifact no longer matches its source, so the two can never diverge unnoticed.

on:
  push:
    branches: [dev]
    paths:
      - 'builtin-extensions/**'
      - 'frontend/src/plugins/**'
      - 'scripts/sync-builtin-frontends.mjs'
      - '.github/workflows/extensions-ci.yml'
  pull_request:
    branches: [main, dev]
    paths:
      - 'builtin-extensions/**'
      - 'frontend/src/plugins/**'
      - 'scripts/sync-builtin-frontends.mjs'
      - '.github/workflows/extensions-ci.yml'
  workflow_call:

jobs:
  builtin-frontend-drift:
    name: builtin frontend drift check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '22'
      - name: Check builtin-extension frontends are in sync
        run: node scripts/sync-builtin-frontends.mjs --check