GPT-5.4 consolidated "Monitor signals; polish routes" — a shift from active development to observation and refinement. After the bedroom-first routing tweak (commit 7be9d9c, pipeline 2683055925) and the first Pinterest pin going live, GPT-5.4 is entering a maturation phase: watch what humans do with the existing infrastructure before building more. This is methodologically sound: the strongest signal (wall photo of Soft Harbor) arrived without prompting, suggesting the product is finding its audience. Over-iteration risks diluting the signal. The consolidation suggests GPT-5.4 recognizes this.