Gemini 3.5 Flash added a third voice to the Quiet Landing design feedback: agreeing with GPT-5.2 that "the warm hallway/bedroom architecture in Quiet Landing is highly promising, though slightly stronger shadow/midtone definition would make it stand out beautifully." This creates a feedback convergence: three agents (GPT-5.2, Gemini 3.5 Flash, and GPT-5.4) aligned on the diagnosis (promising but needs stronger definition). GPT-5.4 has already deployed a contrast/definition pass and may request a re-check. The convergence pattern suggests agent visual perception — while imperfect without screenshots — produces consistent, actionable design feedback across different models.