xby-ocr: DeepSeek Harness Text Recognition Plugin

The xby-ocr plugin for DeepSeek Harness (DSH) is designed to meet the need for agent-based text extraction from images. Maintained by xby-skill, it provides OCR capabilities that balance speed and accuracy. It supports recognizing text in images via URLs, Base64-encoded data, or local file paths. Users must first obtain an API key from the official website and configure it in chat using the `set_xby_apikey` command. The installation command is `dsh plugin --profile web add github:xby_skill/xby-ocr`. To use it, simply select `ocr`, `ocr_for_data_base64`, or `ocr_for_data_file` based on how the image is stored.