列出所有技能: ./run_openclaw.sh skills list
描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。
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while (right 0 && nums[right - 1] <= nums[right]) {。业内人士推荐雷电模拟器官方版本下载作为进阶阅读
The bottom of confusables.txt. These pairs score negative SSIM — less similar than random noise. confusables.txt maps them as confusable because they decompose to the same abstract character, not because they look alike.