Normative v1 format (ACPK header with dat-iteration stamps, sorted
24-byte TOC entries with crc32, 64-byte-aligned uncompressed blobs,
deterministic ObjectMeshData serialization), the bake CLI that drives
MP1a MeshExtractor in parallel, the mmap zero-copy PakReader, and a
dat-gated live-vs-pak equivalence suite. Scope-fenced to the
ObjectMeshData asset classes (the decode-storm content from the MP0
baseline); terrain/BSP/scenery/degrade blobs are later slices. Also
amends the spec: PakReader lives in AcDream.Content (Content->Core
direction from MP1a makes a Core home circular).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>