GitHub-hosted ubuntu-latest preinstalls cmake and ninja. Gitea's
act-runner uses a minimal Ubuntu image (catthehacker/ubuntu:act-*)
which doesn't, so the build step fails with "cmake: command not
found" (exit 127).
apt-get update was already run by install-qt-action's deps step
earlier in the job, so the lists are populated — just install.
Same step added to ci.yml and release.yml.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
magdev
fca2378d63