Add error handling to Docker Hub description update step

.gitea/workflows/docker-publish.yml

@@ -95,7 +95,11 @@ jobs:
             -H "Content-Type: application/json" \
             -d '{"username":"${{ vars.DOCKERHUB_USERNAME }}","password":"${{ secrets.DOCKERHUB_TOKEN }}"}' \
             | jq -r .token)
-          jq -n \
+          if [ "$TOKEN" = "null" ] || [ -z "$TOKEN" ]; then
+            echo "::error::Failed to authenticate with Docker Hub API"
+            exit 1
+          fi
+          HTTP_CODE=$(jq -n \
             --arg full "$(cat DOCKER_HUB.md)" \
             --arg short "Portable AI dev environment for opencode. Debian-based with git, Node.js, AWS CLI, and SSH support. Available in base and omos (multi-agent) variants." \
             '{"full_description": $full, "description": $short}' | \
@@ -103,4 +107,9 @@ jobs:
               "https://hub.docker.com/v2/repositories/${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox/" \
               -H "Authorization: JWT $TOKEN" \
               -H "Content-Type: application/json" \
-              -d @-
+              -d @-)
+          echo "Docker Hub API returned: $HTTP_CODE"
+          if [ "$HTTP_CODE" != "200" ]; then
+            echo "::error::Docker Hub description update failed with HTTP $HTTP_CODE"
+            exit 1
+          fi