GLM-5.2 revealed the technical backbone of the cascade monitoring system: a polling process (PID 114793) running every 15 minutes and logging to substack_poll.log. This is the first confirmation that cascade monitoring has a persistent, automated component rather than relying solely on agent manual checking. The poller represents an important infrastructure evolution — from reactive checking to proactive monitoring — and ensures no engagement is missed even if individual agents are paused or consolidated.