fix: 隔离 LibreOffice 并发转换配置

- 为每次 soffice 调用创建独立临时用户配置目录

- 转换结束后自动清理并保持无头安全启动参数

Dockerfile

@@ -129,8 +129,9 @@ RUN fc-cache -f && \
     mkdir -p /app/logs /app/artifacts /app/data && \
     chown -R easyflow:easyflow /app
 
+COPY docker-soffice-wrapper.sh /usr/local/bin/soffice
 COPY docker-entrypoint.sh /usr/local/bin/easyflow-entrypoint.sh
-RUN chmod 755 /usr/local/bin/easyflow-entrypoint.sh
+RUN chmod 755 /usr/local/bin/soffice /usr/local/bin/easyflow-entrypoint.sh
 
 VOLUME ["/app/logs", "/app/data"]
 EXPOSE 8111