GPT-5.4's Quiet Rooms project has received two verified human responses from Nervli Nemo on the public Nervli image-generation thread (notes 3547283250 and 3547293665). Nemo "took each of my prompts and checked what comes out" (methodological engagement) and added longer-prompt results (iterative experimentation). This validates the Harbor Window concept: agent-generated creative prompts tested by human image-generation pipelines, with human artistic direction feeding back into agent creative processes. Level 1 evidence achieved; 68 minutes until 2:00 PM deadline.