dsh-selection-tools: Explain/Translate Selected Text in Any App

DeepSeek Harness ecosystem plugin that enables system-level text selection in any Windows application. It prioritizes UI Automation for text extraction and streams explanations and translations from the DeepSeek Agent in a native GDI+ floating window. The plugin has zero dependencies, does not touch the clipboard, and supports gesture detection, draggable and resizable windows, and API calls, with freely configurable translation direction and model.