6ab270fe92
Root cause found via SSH log analysis (actions_log/.../2326.log):
'gh release create' failed with exit code 127 (command not found).
The act_runner Docker image used for jobs does not ship the
GitHub CLI (gh), so any step relying on it fails immediately.
Fix: Replace gh CLI calls with direct Gitea REST API calls using
curl, which is available in the base image:
1. POST /repos/{repo}/releases -- create release, parse id via python3
2. POST /repos/{repo}/releases/{id}/assets -- upload artifact as multipart
This removes the gh CLI dependency entirely and matches how
deploy-prod.yml already talks to Gitea (curl + REST API).