dsh-width-tiers: DeepSeek Harness Web Client Width Tiers Plugin

`dsh-width-tiers` is a plugin for DeepSeek Harness Web Client 0.1.7+, designed to resolve wide-table display issues caused by the native chat content column width limit. The plugin provides six tiers—Standard, Medium, Wide, Ultra-wide, Full-width, and Custom—allowing users to switch between them via a floating button in the bottom-right corner, with selections automatically saved. It follows the application's language setting and intelligently limits content based on window width to prevent overflow. Installation requires the `dsh plugin` command and a process restart.