Same-instant cdb proved acdream ambient (0.447) == retail (0.4465) and time/sun match,
so the building/character over-brightness is NOT the bake/wrap/EnvCell/clamp (D-1..D-4,
all correct but off-target) — those light the wrong surfaces. The Holtburg building
exterior is a mode-0 OBJECT (IsBuildingShell, not an EnvCell). Isolation (object point
lights gated OFF) made it match retail => cause is the torch REACH being too long
(acdream range 7.8 = Falloff 6x1.3 vs retail 5.2 = Falloff 4x1.3), flooding the small
facade. OPEN: confirm same-torch Falloff acdream-vs-retail before tightening the reach.
Diagnostic shader hack reverted (tree clean); D-1..D-4 kept. Branch not merged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
