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B's diagnosis nailed it: 149,161 of 163,015 tris (91.5%) at katoomba venue_night were four of my GLB street props. Buildings 348, posters 222 (A's cap worked, never the lever), pools 0. B's sharpest point: it is NOT the density widening -- road density drives the bench/bin/shelter cadence (~100 props on a 966-edge real graph). Fix (collapse-decimate via the R13 instrument tool; originals kept as _hi): bench 1942 -> 500 rendered 60,202 -> 15,500 bus_shelter 7998 -> 2500 rendered 55,986 -> 17,500 bin 3000 -> 800 rendered 18,000 -> 4,800 food_cart 4991 -> 1000 rendered 14,973 -> 3,000 furniture total 149,161 -> 40,800 (-108,361) Projected view ~54.7k (B's 163,015 baseline) / ~113.6k (vs F's 221,935) -- PASSES the 200k gate either way with 86-145k spare. F: these are projections off B's per-instance attribution; yours is the real measure. -> F: RE-MEASURE. Eyeballed every prop; two needed re-cutting: bus_shelter @1000 shredded (thin roof plate on a voxel-remeshed shell) -> @2500 clean; bin @400 creased -> @800 clean. food_cart's black base slab is in the SOURCE model (confirmed against the pre-diet thumb from git), not a decimation artifact. Zero blast radius: dims/footprints/heights identical -> manifest.json byte-identical -> B's placement and A's goldens untouched. Published 4 diet + 4 _hi archives to the depot (John re-authorized explicitly; GLBs are git-ignored so the depot IS the archive). -> Lane B (your 2nd note, cause found, NOT fixed by design): the MeshPhysicalMaterial on bench+food_cart is KHR_materials_specular in the glTF, and it survives a Blender re-export. Fix = neutralise specular pre-export. Deliberately deferred to v4.x: the gate is tris (cleared), and changing shipped shading in a release round without a visual re-verify is risk for no gate benefit. Same list: food_cart is 3.1MB on the depot -- 28 textures now dominate (tris are 1000); a texture-merge item, not a tri item. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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