Modernize: TypeScript, workspace, three.js update

.gitattributes

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+* text=auto eol=lf

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: npm
+      - run: npm ci
+      - run: npm run typecheck
+      - run: npm run format:check
+      - run: npx playwright install --with-deps chromium
+      - run: npm test
+      - run: npm run build
+      - run: node examples/node-render.mjs > /dev/null

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags: ["v*"]
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: npm
+      - run: npm ci
+      - run: npm run typecheck
+      - run: npm run format:check
+      - run: npx playwright install --with-deps chromium
+      - run: npm test
+      - run: npm run build
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: examples/dist
+      - run: gh release create "$GITHUB_REF_NAME" packages/c3r/dist/*.js packages/c3r-three/dist/*.js --generate-notes
+        env:
+          GH_TOKEN: ${{ github.token }}
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

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-
-# Dependency directories
 node_modules/
-package-lock.json
+dist/
+__screenshots__/
+.vitest/

.husky/pre-commit

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+npx lint-staged

.prettierignore

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+**/dist/
+package-lock.json
+examples/public/

.prettierrc

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+{}

.vscode/extensions.json

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+{
+  "recommendations": ["esbenp.prettier-vscode"]
+}

.vscode/settings.json

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+{
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.formatOnSave": true
+}

README.md

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 # CSS 3D Renderer
 
-**C3R.js** is a lightweight library for displaying 3D scenes with CSS. It is designed to be used as a CSS3D backend for existing libraries. It provides classes to construct textured polygons, nest 3D transformed elements and handle camera.
+Display textured 3D scenes with plain DOM elements and CSS transforms.
 
-## Usage
+| Package                           | Description                                          |
+| --------------------------------- | ---------------------------------------------------- |
+| [`c3r`](packages/c3r)             | The library                                          |
+| [`c3r-three`](packages/c3r-three) | three.js renderer (r160+) with geometry and textures |
+| [`c3r-examples`](examples)        | Standalone and ported three.js examples              |
 
-Just include `C3R.standalone.js` to your project, or include both `C3R.min.js` and `glMatrix`
+Try the examples live [here](https://k-adam.github.io/CSS3D-Renderer/).
 
-## Examples
+## Install
 
-The example projects be found in the *examples* directory. You can try them out live [here](https://k-adam.github.io/CSS3D-Renderer/examples/) 
+`npm install c3r`, or `npm install c3r-three three` for three.js. Prebuilt files are on [GitHub Releases](https://github.com/K-Adam/CSS3D-Renderer/releases).
 
-I replaced the original CSS3D renderer of Three.js with a **C3R.js** based implementation, which supports buffergeometry and textures as well. It can be found at *examples/js/renderers/CSS3DRenderer.js*
+## Development
+
+Requires Node 24+. The packages are written in TypeScript.
+
+```sh
+npm install
+npm run build      # packages/*/dist, with type declarations
+npm run dev        # serve the examples
+npm run typecheck  # tsc in strict mode, also the linter
+npm run format
+```