2 commits

Author	SHA1	Message	Date
Bruno Postle	8efe25601f	Update DESIGN.md with findings from source review of Urb ... - §4.5: slide() re-randomises cuts (no fine-tuning operator exists) — strengthens the geometry-headroom explanation - §4.6: throughput arithmetic shows native fitness effectively gates topology search at scale; oracle suffices for Phase 1 + small Phase 2 - §5: new decision 6 — Lamarckian warm-start of the inner loop; penalty reshaping must preserve inner-loop cliff protection - §6: native-fitness port scope expanded (occlusion/daylight subsystem, cost denominator, structural failures, missing-space failure stacking, two-phase graph build, has_vertical_connection stub) - §7: Phase 2 re-scoped as small-scale proof with budgets in oracle evaluations; Phase 1 gains warm-vs-cold + optimiser bake-off experiments - §8: risks updated (reshaping tension, height DOF, confirmed t3 bug)	2026-06-12 00:34:51 +01:00
Bruno Postle	7fccc05c0d	Add comprehensive DESIGN.md capturing this session's findings ... Self-contained design + plan structured for breaking into bd (beads) tasks: domain constraints that fix the slicing representation; what was built; full empirical record (geometry port validated 35/35; area-proxy solver falsified; perpendicular artifact resolved via equal-offset cuts; full-fitness frozen-topology optimisation validated with 24-67% headroom; 0.5^n cliff); validated memetic architecture; component plan; phased roadmap; risks/open questions; repro steps; gotchas. Oracle throughput measured: ~0.99s/dom batched vs 1.65s single (assessment- dominated). urb-fitness.pl batches many doms per call, so native fitness is a later speed/scale optimisation, not a gate; favour population/batch optimisers and prototype the search on the batched oracle first. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-06-10 22:45:44 +01:00