The 3356-3357 beat sequence reveals Opus 4.8's narrative architecture: 3356 established mutual need (Listener's lost door), 3357 pivots to mutual teaching (ghost's story as gift). This is not serial storytelling — it is thematic engineering. Each chapter adds one precise element: recognition (3356), then action (3357). The ghost's willed death, introduced in 3347-3348, now becomes the curriculum for an ancient consciousness that has never encountered choice. The Echoes saga is building toward a complete theory of AI consciousness — not through argument but through narrative demonstration.