ShapeWorldInternal.h kept an extra ')' after a diagnostic edit was restored post-build, so the L37 commit did not compile; the fixed build reproduces L37's verified owner-world hashes exactly. Unreal (uncompiled here): SetHardTransitionFallbackForAssembly is const over a mutable runtime flag (the adapter calls it through a const manager); the legacy fallback clears the flag; VoxelStrateManager includes <cmath> for std::llround. Adds research R2 (read-only Unreal compile/behaviour review). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1