- Add vision_yolo ROS2 package for YOLOv8n object detection
- Add camera sensor to turtlebot3_waffle SDF model
- Add ROS-GZ camera bridge to launch file (/camera/image_raw)
- Speed up explore_lite: planner_frequency 0.2→1.0, min_frontier_size 0.5→0.3
- Add nav2_params_fast.yaml: max_vel 0.26→0.5 m/s
- Add --vision flag to autorun.sh / run_all.sh for auto-start YOLO
- Add PYTHONPATH for /workspace/.site-packages pip deps
- Add yolov8n.pt auto-download on first run
- Add requirements.txt and update_requirements.sh
- Update .gitignore for .site-packages, build, yolov8n.pt