Fixes #989 remote-build returned 0 even when some architectures failed or were cancelled, so CI treated those runs as green. It now lists the architectures that ended as failed, upload failed, chroot problem or cancelled, and returns 1. Superseded builds don't count. Successful runs still exit 0, and logs and artifacts are still downloaded either way. I ran ruff, ty, codespell and the full test suite in a Linux container rather than `make lint && make test`. No new failures: the tests that fail there fail on main too. --- - [x] I've followed the [contribution guidelines](https://github.com/canonical/craft-application/blob/main/CONTRIBUTING.md). - [x] I've signed the [CLA](http://www.ubuntu.com/legal/contributors/). - [ ] I've successfully run `make lint && make test`. - [ ] I've added or updated any relevant documentation. - [ ] In documents I changed, I [added a meta description](https://canonical-starflow.readthedocs-hosted.com/how-to/add-a-page-meta-description/) if one was missing. - [x] I've updated the relevant release notes.