Concatenated page vertex pools (PACKED_VERTEX_WORDS u32/vertex).
Concatenated page meshlet-vertex tables (page-local values, widened to u32).
Concatenated page corner-index tables (u8).
Page-local cluster descriptors (unchanged from the paged data).
LOD records (empty if the source had none).
Page id of each cluster.
Representative parent cluster id per cluster (NO_PARENT-filled if none).
Per-page resident bases, PAGE_BASE_WORDS u32 each.
Flat CPU arrays for the resident pool (pure; the GPU upload mirrors them).