December 2025: Delivered end-to-end robotic arm visualization and control capabilities in OpenHUTB/nn, with real-time joint manipulation, trajectory visualization, and MuJoCo-based simulation. Implemented a three-finger gripper with real-time visualization and gripper controls. Established a MuJoCo-driven simulation environment optimized for keyboard-based operation and multi-finger grip modes. These efforts accelerate rapid prototyping, improve fidelity of simulation-to-deployment, and strengthen the platform for robotics manipulation experiments. Notable collaboration across commits and models to progressively enhance fidelity and control workflows.