fix(ci): jq static binary installieren falls nicht vorhanden

.gitea/workflows/nightly.yml

@@ -140,13 +140,20 @@ jobs:
           git tag "$TAG"
           git push https://gitea-actions:${GITEA_TOKEN}@gitea.it-drui.de/viewit/KX-Bridge-Release.git "$TAG"
 
-          # curl installieren falls nötig
+          # curl + jq installieren falls nötig
           if ! command -v curl >/dev/null 2>&1; then
             apk add --no-cache curl 2>/dev/null || \
               { wget -qO /usr/local/bin/curl \
                   "https://github.com/moparisthebest/static-curl/releases/download/v8.6.0/curl-amd64" \
                 && chmod +x /usr/local/bin/curl; }
           fi
+          if ! command -v jq >/dev/null 2>&1; then
+            ARCH=$(uname -m)
+            JQ_ARCH="amd64"; [ "$ARCH" = "aarch64" ] && JQ_ARCH="arm64"
+            wget -qO /usr/local/bin/jq \
+              "https://github.com/jqlang/jq/releases/download/jq-1.7.1/jq-linux-${JQ_ARCH}"
+            chmod +x /usr/local/bin/jq
+          fi
 
           # Altes Release löschen falls vorhanden
           curl -s -X DELETE \
@@ -154,8 +161,13 @@ jobs:
             "https://gitea.it-drui.de/api/v1/repos/viewit/KX-Bridge-Release/releases/tags/${TAG}" \
             2>/dev/null || true
 
-          # Release erstellen — JSON via python3 serialisieren (kein SIGPIPE-Risiko)
-          python3 .gitea/make_release_json.py "$TAG" "$VERSION" "$BODY_FILE"
+          # Release erstellen — JSON sicher via jq bauen
+          jq -n \
+            --arg tag "$TAG" \
+            --arg name "KX-Bridge ${VERSION} Nightly" \
+            --rawfile body "$BODY_FILE" \
+            '{"tag_name":$tag,"name":$name,"body":$body,"draft":false,"prerelease":true}' \
+            > /tmp/release_body.json
           curl -s -X POST \
             -H "Authorization: token ${GITEA_TOKEN}" \
             -H "Content-Type: application/json" \