update

Dockerfile

@@ -29,6 +29,8 @@ RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/wh
     && pip install --no-cache-dir -r /app/backend/requirements.txt
 
 COPY --chown=app:app backend/ /app/backend/
+# katex fürs Parse-Gate (backend/katex_check.mjs prüft Formeln vor dem Speichern)
+RUN cd /app/backend && npm install --no-audit --no-fund katex && chown -R app:app node_modules
 COPY --chown=app:app templates/ /app/templates/
 COPY --chown=app:app --from=frontend /build/dist /app/frontend/dist
 COPY --chown=app:app dev-ops/opencode.json /home/app/.config/opencode/opencode.json