5618ecf3fc
The hassfest and HACS validator actions both depend on amd64-only Docker images (ghcr.io/home-assistant/hassfest, hacs/action). On ARM64 runners — like the Gitea Actions instance hosting this fork — those images pull but fail with "exec format error" because no multi-arch image is published. Validation still runs on GitHub's amd64 ubuntu-latest runners, where it actually matters for HACS distribution.