dsh-vox-input: Serverless DSH Web Voice Input

dsh-vox-input is a client-side plugin that provides speech-to-text functionality for the DSH Web composer. Built on the browser's native Web Speech API, it requires no server, API key, or model download, ensuring local data processing. The plugin supports real-time recognition and switching between Chinese and English, and features visual waveform control, real-time caption streaming, and intelligent backfill. It is suitable for privacy-focused use cases and for reducing development costs. Installation requires creating a symbolic link, configuring cordis.patch.yml, and restarting the service.