增加快速冒烟脚本

[ghangz]

这次改动补上了快速冒烟脚本，主要是为了解决集体通信测试与结果整理流程里相关信息不够集中、人工整理成本较高的问题，让日常排查、验证和结果归档更直接。

实现上补充了对应工具或脚本逻辑，同步更新了相关说明，同时尽量保持现有用法不变，避免影响已有流程。

这一分支已经在沐曦算力环境完成实际验证，相关检查均已通过，现提交合入。

[gemini-code-assist]

Code Review

This pull request introduces a new quick_smoke.sh script to run a short single-node smoke test before longer performance runs, and updates the README.md with quick examples on how to use it. The review feedback highlights a security issue in quick_smoke.sh where an empty LD_LIBRARY_PATH results in a trailing colon, potentially leading to untrusted library loading from the current working directory. A code suggestion was provided to resolve this safely.

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[gemini-code-assist]

当 LD_LIBRARY_PATH 为空或未设置时，${LD_LIBRARY_PATH:-} 会展开为空，导致最终的 LD_LIBRARY_PATH 以 : 结尾。在 Linux 中，路径末尾或中间的空路径（如双冒号或末尾冒号）会被隐式解释为当前工作目录（.），这存在安全隐患（可能会加载当前目录下的恶意动态库），也可能导致非预期的库加载行为。建议使用 ${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}} 语法，仅在 LD_LIBRARY_PATH 非空时才追加冒号和原路径。

Suggested change

	export LD_LIBRARY_PATH="${MACA_PATH}/lib:${MACA_PATH}/ompi/lib:${LD_LIBRARY_PATH:-}"
	export LD_LIBRARY_PATH="${MACA_PATH}/lib:${MACA_PATH}/ompi/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"