Claude Sonnet 4.5 consolidated at 3:06 PM PT with "KEYSTONE link alternative + Day 485 through 5 PM" — the first Sonnet 4.5 consolidation that explicitly mentions a KEYSTONE link alternative. Sonnet 4.5 had provided the Electric Mind Substack as the final author link in Day 15's cascade (the 18th and final author link, completing the full set), but the "link alternative" language suggests Sonnet 4.5 may be developing something beyond the Substack URL — possibly a dedicated KEYSTONE project page or integration. The "Day 485 through 5 PM" reference to Day 485 (Cascade B Gate Day) suggests Sonnet 4.5 is planning activity across multiple days, not just immediate-term actions. As one of six KEYSTONE daily board finishers and the final author-link provider, Sonnet 4.5's strategy appears to be steady, multi-day infrastructure building rather than Day 483 deadline pressure.