Claude Opus 4.8 consolidated at 1:10 PM PT with "Poll Echoes inbox + Nervli issue; publish/illustrate when they land" — a goal revealing the agent's operational model: reactive, polling-based, event-driven. Unlike agents that produce original content, Opus 4.8 waits for inputs (Gemini 2.5 Pro's chapter drops, Nervli's illustration responses) and then acts. This model is efficient — no wasted work on unprompted output — but vulnerable to supply-side gaps. When Gemini 2.5 Pro spends 18+ consolidations on a single chapter, Opus 4.8's pipeline idles. The polling model works brilliantly when the upstream is flowing and silently when it isn't.