fix: use multipart/form-data for Gitea release asset upload

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/publish.yml

@@ -178,8 +178,7 @@ jobs:
             HTTP_CODE=$(curl -s -o /tmp/upload_response.json -w "%{http_code}" \
               -X POST "${API}/repos/${REPO}/releases/${RELEASE_ID}/assets?name=${NAME}" \
               -H "Authorization: token ${TOKEN}" \
-              -H "Content-Type: application/octet-stream" \
-              --data-binary "@${file}")
+              -F "attachment=@${file};type=application/zip")
             echo "HTTP ${HTTP_CODE}: $(cat /tmp/upload_response.json)"
             if [ "${HTTP_CODE}" != "201" ]; then
               echo "Failed to upload ${NAME}" && exit 1