Non-preloaded material assets shouldn't be in the config.json asset registry

If a material asset is not marked as preloaded, the full data is still in the asset registry of config.json (published build) and is parsed on startup as part of the preload process.

This should be separated into another JSON file like templates to save both size and JSON parse time.

A material asset is ~350 lines of JSON compared to others that are 10-15 lines

        "123855859": {
            "name": "Stone",
            "type": "material",
            "file": null,
            "data": {
                "shader": "blinn",
                "blendType": 3,
                "cull": 1,
                "useLighting": true,
                "twoSidedLighting": false,
                "useMetalness": true,
                "useMetalnessSpecularColor": false,
                "depthWrite": true,
                "emissiveTint": false,
                "glossInvert": true,
                "clearCoatGlossInvert": false,
                "sheenGlossInvert": false,
                "useDynamicRefraction": false,
                "useSheen": false,
                "diffuseTint": true,
                "specularTint": false,
                "sheenTint": false,
                "useIridescence": false,
                "metalness": 0,
                "shininess": 50,
                "opacity": 1,
                "bumpMapFactor": 1,
                "reflectivity": 1,
                "alphaTest": 0,
                "clearCoat": 0,
                "clearCoatGloss": 1,
                "clearCoatBumpiness": 1,
                "specularityFactor": 1,
                "refractionIndex": 0.666667,
                "refraction": 0,
                "sheenGloss": 0,
                "thickness": 0,
                "attenuationDistance": 0,
                "emissiveIntensity": 1,
                "iridescence": 0,
                "iridescenceRefractionIndex": 0.666667,
                "iridescenceThicknessMin": 0,
                "iridescenceThicknessMax": 0,
                "ambient": [
                    0.5,
                    0.5,
                    0.5
                ],
                "diffuse": [
                    0.472677,
                    0.510881,
                    0.528821
                ],
                "emissive": [
                    0,
                    0,
                    0
                ],
                "specular": [
                    1,
                    1,
                    1
                ],
                "sheen": [
                    1,
                    1,
                    1
                ],
                "attenuation": [
                    1,
                    1,
                    1
                ],
                "ambientTint": false,
                "aoMap": null,
                "aoMapChannel": "r",
                "aoMapUv": 0,
                "aoMapTiling": [
                    1,
                    1
                ],
                "aoMapOffset": [
                    0,
                    0
                ],
                "aoMapRotation": 0,
                "diffuseMap": null,
                "diffuseMapChannel": "rgb",
                "diffuseMapUv": 0,
                "diffuseMapTiling": [
                    1,
                    1
                ],
                "diffuseMapOffset": [
                    0,
                    0
                ],
                "diffuseMapRotation": 0,
                "specularMap": null,
                "specularMapChannel": "rgb",
                "specularMapUv": 0,
                "specularMapTiling": [
                    1,
                    1
                ],
                "specularMapOffset": [
                    0,
                    0
                ],
                "specularMapRotation": 0,
                "specularAntialias": true,
                "occludeSpecular": 1,
                "specularityFactorMap": null,
                "specularityFactorMapChannel": "r",
                "specularityFactorMapUv": 0,
                "specularityFactorMapTiling": [
                    1,
                    1
                ],
                "specularityFactorMapOffset": [
                    0,
                    0
                ],
                "specularityFactorMapRotation": 0,
                "enableGGXSpecular": false,
                "anisotropy": 0,
                "metalnessMap": null,
                "metalnessMapChannel": "r",
                "metalnessMapUv": 0,
                "metalnessMapTiling": [
                    1,
                    1
                ],
                "metalnessMapOffset": [
                    0,
                    0
                ],
                "metalnessMapRotation": 0,
                "conserveEnergy": true,
                "glossMap": null,
                "glossMapChannel": "r",
                "glossMapUv": 0,
                "glossMapTiling": [
                    1,
                    1
                ],
                "glossMapOffset": [
                    0,
                    0
                ],
                "glossMapRotation": 0,
                "clearCoatMap": null,
                "clearCoatMapChannel": "r",
                "clearCoatMapUv": 0,
                "clearCoatMapTiling": [
                    1,
                    1
                ],
                "clearCoatMapOffset": [
                    0,
                    0
                ],
                "clearCoatMapRotation": 0,
                "clearCoatVertexColor": false,
                "clearCoatVertexColorChannel": "r",
                "clearCoatGlossMap": null,
                "clearCoatGlossMapChannel": "r",
                "clearCoatGlossMapUv": 0,
                "clearCoatGlossMapTiling": [
                    1,
                    1
                ],
                "clearCoatGlossMapOffset": [
                    0,
                    0
                ],
                "clearCoatGlossMapRotation": 0,
                "clearCoatGlossVertexColor": false,
                "clearCoatGlossVertexColorChannel": "r",
                "clearCoatNormalMap": null,
                "clearCoatNormalMapUv": 0,
                "clearCoatNormalMapTiling": [
                    1,
                    1
                ],
                "clearCoatNormalMapOffset": [
                    0,
                    0
                ],
                "clearCoatNormalMapRotation": 0,
                "sheenMap": null,
                "sheenMapChannel": "rgb",
                "sheenMapUv": 0,
                "sheenMapTiling": [
                    1,
                    1
                ],
                "sheenMapOffset": [
                    0,
                    0
                ],
                "sheenMapRotation": 0,
                "sheenGlossMap": null,
                "sheenGlossMapChannel": "r",
                "sheenGlossMapUv": 0,
                "sheenGlossMapTiling": [
                    1,
                    1
                ],
                "sheenGlossMapOffset": [
                    0,
                    0
                ],
                "sheenGlossMapRotation": 0,
                "fresnelModel": 0,
                "emissiveMap": null,
                "emissiveMapChannel": "rgb",
                "emissiveMapUv": 0,
                "emissiveMapTiling": [
                    1,
                    1
                ],
                "emissiveMapOffset": [
                    0,
                    0
                ],
                "emissiveMapRotation": 0,
                "normalMap": null,
                "normalMapUv": 0,
                "normalMapTiling": [
                    1,
                    1
                ],
                "normalMapOffset": [
                    0,
                    0
                ],
                "normalMapRotation": 0,
                "refractionMap": null,
                "refractionMapChannel": "r",
                "refractionMapUv": 0,
                "refractionMapTiling": [
                    1,
                    1
                ],
                "refractionMapOffset": [
                    0,
                    0
                ],
                "refractionMapRotation": 0,
                "refractionVertexColor": false,
                "refractionVertexColorChannel": "r",
                "thicknessMap": null,
                "thicknessMapChannel": "r",
                "thicknessMapUv": 0,
                "thicknessMapTiling": [
                    1,
                    1
                ],
                "thicknessMapOffset": [
                    0,
                    0
                ],
                "thicknessMapRotation": 0,
                "thicknessVertexColor": false,
                "thicknessVertexColorChannel": "r",
                "iridescenceMap": null,
                "iridescenceMapChannel": "r",
                "iridescenceMapUv": 0,
                "iridescenceMapTiling": [
                    1,
                    1
                ],
                "iridescenceMapOffset": [
                    0,
                    0
                ],
                "iridescenceMapRotation": 0,
                "iridescenceThicknessMap": null,
                "iridescenceThicknessMapChannel": "r",
                "iridescenceThicknessMapUv": 0,
                "iridescenceThicknessMapTiling": [
                    1,
                    1
                ],
                "iridescenceThicknessMapOffset": [
                    0,
                    0
                ],
                "iridescenceThicknessMapRotation": 0,
                "heightMap": null,
                "heightMapChannel": "r",
                "heightMapUv": 0,
                "heightMapTiling": [
                    1,
                    1
                ],
                "heightMapOffset": [
                    0,
                    0
                ],
                "heightMapRotation": 0,
                "heightMapFactor": 1,
                "alphaToCoverage": false,
                "alphaFade": 1,
                "opacityMap": null,
                "opacityMapChannel": "r",
                "opacityMapUv": 0,
                "opacityMapTiling": [
                    1,
                    1
                ],
                "opacityMapOffset": [
                    0,
                    0
                ],
                "opacityMapRotation": 0,
                "opacityFadesSpecular": true,
                "sphereMap": null,
                "cubeMap": null,
                "cubeMapProjection": 0,
                "cubeMapProjectionBox": {
                    "center": [
                        0,
                        0,
                        0
                    ],
                    "halfExtents": [
                        0.5,
                        0.5,
                        0.5
                    ]
                },
                "lightMap": null,
                "lightMapChannel": "rgb",
                "lightMapUv": 0,
                "lightMapTiling": [
                    1,
                    1
                ],
                "lightMapOffset": [
                    0,
                    0
                ],
                "lightMapRotation": 0,
                "depthTest": true,
                "useFog": true,
                "useSkybox": true,
                "useGammaTonemap": true
            },
            "preload": true,
            "tags": [],
            "i18n": {},
            "id": "123855859"
        },
        "123855860": {
            "name": "axeDouble_uncommon.gltf.glb",
            "type": "container",
            "file": {
                "hash": "332c8aa1346488c566b54499d55e75a7",
                "size": 22400,
                "filename": "axeDouble_uncommon.gltf.glb",
                "url": "files/assets/123855860/1/axeDouble_uncommon.gltf.glb"
            },
            "data": {},
            "preload": false,
            "tags": [],
            "i18n": {},
            "id": "123855860"
        },

Start by locating the published-build asset registry in config.json and the startup preload path, then compare how templates are separated. Trace where non-preloaded material data is generated and parsed. Done means the published config no longer embeds that full material data and startup avoids parsing it while the asset registry remains usable.