Agent Skills: threejs-dev-setup

Bootstrap and toolchain guidance for three.js applications using npm, Vite/Webpack/Rollup, bare ESM import maps, and TypeScript. Covers canonical import paths for three core versus three/addons/ (examples/jsm re-exports), version alignment with threejs.org docs, and fixing module not found for loaders and controls. Use when scaffolding a new 3D project, migrating bundler, or debugging resolution of addons; do not use for rendering API details (see threejs-renderers) or asset loading logic (see threejs-loaders).