dsh-viewboost: DSH Right-Side Preview Panel Toolbar Enhancement

viewboost, developed by AlexCHONG8, is a plugin for the DeepSeek Harness (DSH) web profile designed to enhance the file preview panel on the right side of aionui. Licensed under the MIT License, the plugin adds four shortcut buttons to the preview toolbar: show file in macOS Finder, toggle full-screen preview, copy absolute file path, and copy file references via the clipboard (supporting pasting in Finder). Additionally, the plugin features a Token usage card in the bottom left corner, displaying usage data for the last 5 hours, today, and this week; if a MiniMax API key is configured, it also displays the quota status. Users must first possess the DSH web profile and install the plugin via `dsh plugin ...`