feat: add WebGPU support detection with fallback UI#3
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Show a friendly error screen instead of a blank canvas when the browser does not support WebGPU. Checked via navigator.gpu before attempting renderer initialisation. - Unsupported browsers see a centred message with browser recommendations - Links to webgpureport.org for the user to verify their setup - useState initialiser runs synchronously so no flash of blank content - Early return is placed after all hooks to comply with Rules of Hooks
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Problem
When WebGPU is not available, the canvas initialisation fails silently
and the user sees a completely blank screen with no explanation.
Solution
Detect
navigator.gpuvia auseStateinitialiser (runs synchronously,no flash). If unsupported, render a styled fallback that:
The early return is placed after all hooks to comply with React's
Rules of Hooks.