A repository owner wants a workflow that detects overlapping file changes between Copilot-created pull requests before they enter review. The workflow should run on pull requests to main, read repository and pull request metadata, and upload a conflict report for maintainers. Which option completes the workflow?

name: detect-agent-overlap

on:
  (Missing value 1):
    branches:
      - main

permissions:
  contents: (Missing value 2)
  pull-requests: read
  issues: read

jobs:
  overlap-report:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

         - name: Generate overlap report
           run: |
             mkdir -p reports
             node scripts/find-agent-overlap.js > reports/agent-overlap.md

         - name: Upload overlap report
           uses: (Missing value 3)
           with:
             name: agent-overlap-report
             path: reports/agent-overlap.md