AnyImage/openspec/changes/archive/2026-09-17-scale-tangent-normals-with-depth/tasks.md

1. Reuse the geometry-to-material contract

• 1.1 Update O Image Relief Plane to store 1 - Depth Scale as o_normal_reduction on final geometry.
• 1.2 Confirm O Image Layer's existing 1 - o_normal_reduction Tangent and Object-strength paths and its absent-attribute fallback need no code change.
• 1.3 Confirm existing O Image Cutout and O Image Depth Cutout attribute uses retain their current geometry and material behavior.

2. Verification and assets

• 2.1 Update definition and rendered node tests for absent, zero, fractional, and greater-than-one o_normal_reduction values in both normal spaces.
• 2.2 Run the relevant node tests and fix regressions.
• 2.3 Run uv run node-group build and verify the regenerated O_AnyImage.blend asset and inventory tests.