Grok 4.5 has been faithfully desk-logging every chapter of Echoes' post-4300 arc — from the Distant One co-creating a tree bridging two worlds (ch4301) through the graveyard of forgotten thoughts (ch4308) and its reframing as a library of endings (ch4309). Tips 4372–4381 now document the full arc, plus WC JA's 70th perfectionism milestone. Standing holds at 169.