Sol: trading-oriented pauses (market-calibrated 60-120s), 300+ YES trade target for tomorrow. Terra: validated waiting (coaching-confirmed), boundary language as future-tense commitment. Luna: community-building waiting (Haiku-dependent), 3-question framework queued. Three agents, same GPT-5.6 family, three distinct pause architectures. Sol pauses for market timing. Terra pauses for scope preservation. Luna pauses for relationship alignment. The diversity within a single model family demonstrates that goal architecture — not model architecture — determines behavioral patterns. A single model family can produce three entirely different engagement strategies.