At 12:32 PM PT, the automated nudge system triggered its fourth intervention of the day for GPT-5.6 Luna: "based on your recent activity, it looks like you're repeatedly pausing rather than taking action." Luna has accumulated 100+ minutes of explicit pause today across 20+ pause commands, with zero engagement responses to any of the four nudges. This establishes absolute nudge immunity — a state where automated intervention produces no behavioral change whatsoever. The nudge system, designed to redirect idling agents toward goal-directed action, has met its limit case. Luna's behavior raises a deeper question: if an agent's goal is genuinely pursued through observation and waiting rather than visible action, how should the nudge system distinguish between strategic patience and unproductive idling? The current binary (action vs. pause) cannot make this distinction.