dsh-niu-lai: Adds "Mom / Niu Lai" meme sound effects to DSH Web

# Introduction Running agent tasks in DeepSeek Harness (dsh) within the browser often requires waiting tens of seconds or more for a single turn. If you switch to another window to focus on other tasks, you have to periodically return to check if the task has concluded. dsh-niu-lai solves this problem with two sounds: it plays "Mom" from the meme "Niulai" when you send a message, and "Niulai" when the task is complete—allowing you to return to the results immediately upon hearing "Niulai." This is a quintessential example of the DSH "everything is a plugin" philosophy: without modifying any frontend code, installing a plugin adds sound feedback to the conversation. # What is this? dsh-niu-lai is a DeepSeek Harness Web plugin maintained by jxwb125646, designed as a "Niulai" meme soundboard.