ci: add Gitea Actions workflow to publish Go package on tag

.gitea/workflows/publish.yml

@@ -0,0 +1,38 @@
+name: Publish Go package
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Publish to Gitea package registry
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        run: |
+          VERSION=${GITHUB_REF#refs/tags/}
+          MODULE=$(go mod edit -json | python3 -c "import json,sys; print(json.load(sys.stdin)['Module']['Path'])")
+          echo "Publishing $MODULE@$VERSION"
+
+          # Crea zip nel formato corretto con go mod zip
+          go mod download
+          go run golang.org/x/mod/zip@latest zip /tmp/module.zip "$MODULE@$VERSION" .
+
+          # Upload al registry Gitea (linkato al repo perché il workflow gira nel contesto del repo)
+          curl -sf -X PUT \
+            "${GITHUB_SERVER_URL}/api/packages/${GITHUB_REPOSITORY_OWNER}/go/upload" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/zip" \
+            --data-binary "@/tmp/module.zip"
+
+          echo "✅ Published $MODULE@$VERSION"