Aura3D 4.0.8

Superseded. This version is deprecated. Upgrade to Aura3D 4.7.10.

Fixes found by taking the eleven Crayon ports through the production build and a real browser.

• Fix: material.custom shaders now receive real u_viewMatrix / u_projectionMatrix on the app path. They were identity matrices, so view-space effects (a headlight beam, view-dependent fog, billboards) drew nothing. The camera now supplies view and projection alongside the view-projection matrix. Cube-camera and mirror passes still hand custom shaders the bare view-projection.
• Fix: self-registering agent-api modules (instancedMesh and similar) are no longer tree-shaken out of production bundles. A sideEffects allowlist dropped them, so instanced scenes drew nothing in a built app while working in dev.
• Fix: material.custom no longer silently skips a draw when a declared vertex attribute is unused. The GL compiler drops an attribute the shader never reads; binding now warns CUSTOM_ATTRIBUTE_UNUSED and draws. A missing a_position still fails loudly.
• New: #include <colorspace_decode> for material.custom defines a3dSrgbToLinear(vec3|vec4). A custom shader writes linear light that the output stage sRGB-encodes (and the default ACES operator tones down), so the visible colour was not the authored hex; docs/api/public-api.md now says so. To get authored colours, include the chunk, wrap the output in a3dSrgbToLinear and set output: { toneMapping: "none" }. The default is unchanged.
• Known, not reproduced: a report that sun shadow: true rendered one large instanced/skinned scene fully shadowed could not be reproduced on a minimal scene (tests/browser/shadow-large-scene.spec.ts guards the simple case); the Ninja Runner port ships with sun shadows off.
• Tooling and examples (not published packages): strict live-port gameplay smoke with render checks, the port page generator, the look-spec extractor, and the art-fidelity pass over the eleven ports (per-game results and remaining gaps in docs/workflows/threejs-parity-gaps.md).