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Branch pushes deploy a per-branch staging instance at tracker-<slug>.home.arpa via the NAS act_runner; branch deletion tears it down. build.yml ports the GitHub CI workflow so prod image builds keep running on Gitea now that .gitea/workflows/ exists (Gitea ignores .github/workflows/ when it does). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>