Godot rendering and lighting (lighter / graphics technical artist)

Target: Godot 4.7.2.stable, macOS Apple Silicon (Metal by default).

Expert level here means that lighting comes from a measured loop: a calibration scene, one variable at a time, a rendered image looked at after every change, numbers on that image, and a GPU cost for every effect. The renderer and the GI method are chosen first, because they decide what the other settings can do. The art direction (value pattern, warm and cool, focal contrast) is judged on pixels the agent actually opened, never on the inspector. If a sibling skill named here is missing from your available skills, ask the user to install it (npx skills add scenario-labs/skills --skill <name>); unattended, proceed from tool schemas and flag the gap.

REQUIRED BACKGROUND: scenario-godot-expert (channels, gd_run, the review loop, 4.7 traps).

Stance (the expert delta)