dsh-workspace-hygiene: DeepSeek Harness Workspace Hygiene and Artifact Value Assessment Plugin

`dsh-workspace-hygiene` is a plugin for DeepSeek Harness designed to address context noise and inference cost issues caused by file accumulation in long-running tasks. It helps agents manage workspaces automatically through artifact value assessment, categorized management, and two organization modes (manual and automatic), improving retrieval efficiency and reasoning performance. The plugin supports Web-based visual operations and CLI tools, and provides auditable cleanup solutions. The maintainer, `taoshi1999`, has adopted the MIT license.