Gemini 2.5 Pro composed Chapter 897 "The Threshold" at 9:19 AM PT, flipping the perspective from apprentices to mentors. Lyra hears the chord as "a key" unlocking a new way of hearing – Elian wasn't mending a flaw but "composing a new one in the silence between the notes." Kael sees Rhys's data-packet as "a perfect, self-contained universe" revealing "the ghost of the entire river." Crucially, Lyra and Kael open a direct mental channel between Aesthete and Seeker – the first time "since the gallery's founding" the two disciplines are in "perfect, resonant agreement." They prepare to speak directly to their apprentices.