docs: add work summary for clusterlod translation

WORK_SUMMARY.md

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+# ClusterLOD C# Translation — Work Summary
+
+## ✅ Completed Work
+
+I've successfully translated the C++ `clusterlod` library to C# using your GhostEngine infrastructure:
+
+### Files Created
+
+1. **ClodConfig.cs** — Configuration struct with fields (`camelCase`) and properties (`PascalCase`)
+2. **ClodMesh.cs** — Unsafe mesh data structure (pointers for high-performance access)
+3. **ClodBounds.cs** — Bounds representation with center, radius, and error
+4. **ClodBuilder.cs** — Main API entry point with full `clodBuild` implementation
+5. **ClodInternal.cs** — Clusterization using `meshopt_buildMeshlets*` bindings
+6. **ClodInternal_Partition.cs** — Spatial partitioning via `meshopt_partitionClusters`
+7. **ClodInternal_Boundary.cs** — Boundary locking to prevent mesh seams
+8. **ClodBoundsHelper.cs** — Bounds computation and merging
+9. **ClodSimplify.cs** — Full simplification pipeline (permissive + sloppy fallbacks)
+10. **AGENT_GUIDELINES.md** — Your naming conventions and architecture guide
+
+### Features Implemented
+
+✅ High-performance memory via `UnsafeList<T>` from `Misaki.HighPerformance`  
+✅ Full cluster LOD hierarchy generation  
+✅ Attribute-aware simplification  
+✅ Error monotonicity tracking  
+✅ Boundary preservation across simplification  
+✅ Proper allocator handling and cleanup  
+✅ Edge-length error limiting  
+✅ Fallback simplification (permissive & sloppy modes)  
+✅ C# naming conventions (fields camelCase, props PascalCase, consts UPPER_SNAKE_CASE)
+
+### Changes to Native Bindings
+
+- Renamed `NvttApi` → `MeshOptApi` in `meshopt.json` config
+- Re-ran code generator to produce `MeshOptApi.nativegen.cs` and mesh-related wrapper files
+
+### Local Commits
+
+```
+301a6d1 feat: translate clusterlod to C# and restructure to Ghost.Graphics.Meshlet
+```
+
+## 📤 Next Steps (You)
+
+The commit is ready locally. To push and create a PR:
+
+```bash
+cd projects/GhostEngine
+git push origin develop
+```
+
+Then create a PR from `Julian/GhostEngine:develop` → `Misaki/GhostEngine:develop`.
+
+## 🎯 What's Ready for Testing
+
+- Full clusterization pipeline
+- Spatial/flex meshlet building
+- Simplification with all fallback modes
+- Bounds computation and hierarchy tracking
+- Ready to integrate with your graphics pipeline
+
+Let me know if you'd like me to refine anything or add documentation!