Replace built-in auto-add workflows with GitHub Actions

[knoan]

Problem

Built-in "Auto-add to project" workflows are scoped to a single repository each, with a cap of 5 on Pro/Team
plans. There is no way to target multiple repos in one workflow.

Solution

Replace built-in workflows with actions/add-to-project, hosted as a
reusable workflow in the metreeca/.github repository.

Central workflow

Define .github/workflows/project-add.yml in metreeca/.github:

name: Add to project
on:
  issues:
    types: [opened]
  pull_request:
    types: [opened]

jobs:
  add-to-project:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/add-to-project@v1
        with:
          project-url: https://github.com/orgs/metreeca/projects/3
          github-token: ${{ secrets.PROJECT_TOKEN }}

Per-repo caller

Each repo calls the central workflow with a one-liner:

name: Add to project
on:
  issues: { types: [opened] }
  pull_request: { types: [opened] }
jobs:
  add:
    uses: metreeca/.github/.github/workflows/project-add.yml@main
    secrets: inherit

Alternatively, since metreeca/.github is public, org-wide workflow inheritance may apply without per-repo callers.

Token setup

1. Create a fine-grained PAT with:
   • Organisation projects: read and write
   • Repository Issues: read
   • Pull requests: read
2. Add it as an org secret named PROJECT_TOKEN (Settings → Secrets → Actions)

Comparison

	Built-in	Actions-based
Repo limit	5 (Pro/Team)	Unlimited
Filter flexibility	Limited	Full event context, custom logic
Custom logic	None	Can set status, labels, custom fields
Audit trail	None	Full workflow run logs

References

• actions/add-to-project
• GitHub: Adding items automatically