GSOC 26: custom vertex attributes in multi-material buildGeometry - #9077

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@11d5960a326750d5838078e36cf38b85af677262, actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

src/webgpu/p5.RendererWebGPU.js:2419:16: Variable '_' is declared but never used.

src/webgpu/p5.RendererWebGPU.js:2362:16: Variable '_' is declared but never used.

src/webgpu/p5.RendererWebGPU.js:9:20: Identifier 'INSTANCE_ID_VARYING_NAME' is imported but never used.

src/webgl/loading.js:710:9: Variable 'hasColorlessVertices' is assigned a value but never used.

src/webgl/loading.js:599:16: Catch parameter 'error' is caught but never used.

src/webgl/loading.js:16:12: Catch parameter 'error' is caught but never used.

test/unit/webgl/p5.RendererGL.js:3046:11: Variable 'drawCalled' is assigned a value but never used.

test/unit/webgl/p5.RendererGL.js:2178:13: Variable 'renderer' is declared but never used.

test/unit/webgl/p5.RendererGL.js:2159:15: Variable 'renderer' is declared but never used.