chore: import upstream snapshot with attribution

.github/workflows/build-site.yaml

@@ -0,0 +1,38 @@
+name: Build site and push to gh-pages
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build site
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Configuring build Environment
+      run: |
+        sudo apt-get update
+        python -m pip install -U pip
+
+    - name: Setup Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.0'
+
+    - name: Installing dependencies
+      run: |
+        python -m pip install -r docs/requirements.txt
+        gem install jekyll jekyll-remote-theme jekyll-sass-converter
+
+    - name: Build and deploy site
+      if: github.ref == 'refs/heads/main'
+      run: |
+        git remote set-url origin https://x-access-token:${{ secrets.MLC_GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
+        git config --global user.email "mlc-gh-actions-bot@nomail"
+        git config --global user.name "mlc-gh-actions-bot"
+
+        ./scripts/gh_deploy_site.sh

.github/workflows/build.yaml

@@ -0,0 +1,38 @@
+name: Build
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build package
+        run: npm run build
+
+      - name: Validate package contents
+        run: npm pack --dry-run

.github/workflows/linter.yaml

@@ -0,0 +1,27 @@
+name: Linter
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: ".nvmrc"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run lint
+        run: npm run lint

.github/workflows/security.yaml

@@ -0,0 +1,73 @@
+name: Security
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  schedule:
+    - cron: "25 5 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: read
+
+    steps:
+      - name: Dependency review
+        uses: actions/dependency-review-action@v4
+        with:
+          fail-on-severity: high
+
+  npm-audit:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run npm audit (production dependencies)
+        run: npm audit --omit=dev --audit-level=high
+
+  codeql:
+    if: github.event_name != 'pull_request'
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: javascript-typescript
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
+      - name: Analyze
+        uses: github/codeql-action/analyze@v3

.github/workflows/tests.yaml

@@ -0,0 +1,45 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run test suite
+        env:
+          CI: "true"
+        run: npm run test -- --ci
+
+      - name: Upload coverage artifact
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-${{ github.run_id }}
+          path: coverage
+          if-no-files-found: ignore