feat: model-free bench, Quick Start + Build-from-scratch landing, fix blank-Lab

refactor(runtime): single Gemma 4 12B model + Hatchimera rename

feat(edit): replace small-model selector with keyword + parametric assembler

feat(runtime): log selector picks; fake edit keyword-matches the catalog

feat(runtime): default selector to MiniCPM5-1B-GGUF with auto-fallback to Qwen

feat(runtime): selector->assembler edit path with freeform fallback

perf(runtime): optional no-grammar freeform path + lower 12B token cap

fix(runtime): grammar bench measures OFF only to avoid ZeroGPU abort

perf(runtime): give freeform 12B calls their own GPU budget + grammar bench

feat(bench): big 3D scenes + Gemma-suggested hint bubbles in a halo arc

feat(freeform): route the whole main flow through the freeform path

feat: freeform voxel generation (Gemma 4 12B) + freeform breeding

fix: enforce genome schema via json_object response_format; default to Qwen2.5-3B

fix: AI tweak no-op on the real model when the edit is empty

feat: Build Buddy — voxel pet fusion (AI genetics engine)