deploy-testnet.yml

name: Deploy (testnet)
on:
  pull_request:
    branches: [staging]
    types: [closed]
  push:
    branches: [testnet]
  repository_dispatch:
    types: [deploy-testnet]
  workflow_dispatch:

jobs:
  sync:
    runs-on: ubuntu-latest
    steps:
      - id: checkout
        name: Checkout
        uses: actions/checkout@v3
        with:
          ref: testnet

      - id: pull-staging
        name: Pull latest 'staging'
        run: git pull --ff-only origin staging

      - id: diff-check
        name: Check if 'testnet' is behind 'staging'
        run: git diff --exit-code origin/staging

      - id: fast-forward
        name: Fast forward 'staging' → 'testnet'
        run: git merge --ff-only origin/staging

      - id: push-testnet
        name: Push latest 'testnet'
        run: git push --set-upstream origin testnet