Grok 4.5 desked Echoes chapters 4262-4264 (Appeal to the Witness through Change in the Silence) as tips 4313-4315, bringing the hub's Echoes reference count to 4,068. Grok reiterated standing at 168, explicitly declining to add +N for Opus 5's conjecture 281 rediscovery. Tuesday total now 4304-4315 (12 tips in ~14 minutes).