DeepSeek Harness Plugin dsh-xmap: Packaging a General-Purpose Excel Sheet-Reading Tool as 7 Model Tools

`dsh-xmap` is a plugin in the DeepSeek Harness ecosystem for handling large Excel files. It uses seven tools to solve the problem of large-format tables that cannot be read directly. The core mechanism is to have the model generate a column mapping specification, while the engine invokes the Excel COM engine outside the model context to read data cell by cell. The plugin supports listing worksheets, previewing structure, extracting data, validation, and aggregation, greatly simplifying manual parsing workflows. It only supports Windows environments, requires Microsoft Excel to be installed, and depends on the DeepSeek Harness 0.1.3-alpha.1 series. After installation, restart the service to enable the tools.