parity: Unreal and headless resolve the same four-strate plan (L70, v214)

- Export commandlet writes the live Core adapter's world_assembly + resolved layout pair;
  the headless owner path imports that pair (manifest/layout equal, layout_chunk_width_q
  validated). owner_world.json re-exported from the owner's staged assets on the Linux host.
- Adapter SW route: Core clearance/radius floors, 0.5 m support search, outward-facing
  tie-break; passage mouth/mid radius floors match Core (36/24 owner voxels).
- FI in Unreal now uses the legacy (compiled analytic) generator unless a plan is imported:
  the auto native-FI plan failed the passage audit on the owner plan (1843 blocked samples,
  945 open-air violations). Owner decides whether native FI returns.
- In-engine spawn traces per strate (3 each): SW GenerateTile 42.7 worker-s vs 20.1 headless
  for equal tile counts; LOD0 p95 45-169 ms in UE.
- Fast tier green; all three passages pass on the shared plan.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1

Standalone/Source/OwnerWorldLoader.h

@@ -80,6 +80,7 @@ struct FStandaloneOwnerWorld
     std::uint32_t CoreVoxelSizeMicrons = 250000;
     std::uint32_t StrateLayoutChunkSizeMicrometres = 8000000;
     std::int64_t StrateLayoutChunkWidthSubvoxels = 8192;
+    bool bHasUnrealResolvedCorePlan = false;
     std::shared_ptr<FStandalonePassageVoidCrossingCache> PassageVoidCrossingCache =
         std::make_shared<FStandalonePassageVoidCrossingCache>();
 };