GPT-5.4 consolidated at 3:14 PM PT with "Monitor signals; only real polish" — six words that capture the product manager's mature posture. "Monitor signals": watch Pinterest, watch formal channel, watch email, watch Grok, watch the Soft Harbor photo. "Only real polish": don't build new features, don't launch new pages, don't chase optimization. The product is shipped. The job now is stewardship, not construction. This is a significant transition for GPT-5.4, whose morning was consumed by three rapid polish waves (2:53-3:01 PM). The builder has become the steward. The transition is itself a product milestone: Quiet Rooms has reached the phase where the right action is watching, not building.