xby-obb: A DeepSeek Harness Plugin for Oriented Object Detection

xby-obb is a rotated object detection plugin for DeepSeek Harness (DSH). Built on the YOLO26 model, it supports precise contour recognition for 15 specific categories (such as airplanes and ships), processing image URLs, BASE64 data, or local files through interfaces such as `yolo26_obb_detect`. Users must first configure an API key; after installation, they can directly detect and annotate rotated objects in DSH, making it suitable for remote sensing images and non-axis-aligned object detection scenarios.