#TODO — src/ahc##Current##Next-[ ] Add property test: clustering is deterministic for identical inputs.
- [ ] Benchmark AHC vs scikit-learn reference on small synthetic data.
##Known Gaps-No benchmark for AHC runtime scaling with embedding count.
- Elbow heuristic is not configurable from the public API.
##Deferred-[ ] Explore single-linkage vs complete-linkage variants.