CI: Upgrade actions/checkout to v4 and add pull_request triggers #28
Description
Summary
Several CI workflow improvements would bring the GitHub Actions configuration up to current best practices.
Current State
| Workflow | Checkout | PR Trigger |
|---|---|---|
| docc.yml | v3 | N/A (pages deploy) |
| macOS.yml | v3 | ❌ Missing |
| ubuntu.yml | v3 | ❌ Missing |
| windows.yml | v4 | ❌ Missing |
Proposed Changes
- Upgrade
actions/checkoutfrom v3 to v4 in docc, macOS, and ubuntu workflows - Add
pull_requesttriggers targetingmainto macOS, ubuntu, and windows workflows - docc.yml should stay push-to-main only (deploys Pages)
🤖 Filed by corvid-agent during autonomous improvement pass