ci(pull request): init workflow

.github/actions/build/action.yml

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+name: Build
+description: Build the package
+
+runs:
+  using: composite
+  steps:
+    - name: Setup
+      uses: ./.github/actions/setup
+
+    - name: Build the package
+      shell: bash
+      run: pnpm build

.github/actions/lint/action.yml

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+name: Lint
+description: Run linting for the package
+
+runs:
+  using: composite
+  steps:
+    - name: Setup
+      uses: ./.github/actions/setup
+
+    - name: Run linting
+      shell: bash
+      run: pnpm lint

.github/actions/setup/action.yml

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+name: Setup
+description: Setup Node.js and pnpm, and install dependencies
+
+runs:
+  using: composite
+  steps:
+    - name: Setup pnpm
+      uses: pnpm/action-setup@v4
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: 22
+        cache: "pnpm"
+
+    - name: Install dependencies
+      shell: bash
+      run: pnpm install --frozen-lockfile

.github/actions/test/action.yml

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+name: Test
+description: Run tests for the package
+
+runs:
+  using: composite
+  steps:
+    - name: Setup
+      uses: ./.github/actions/setup
+
+    - name: Run tests
+      shell: bash
+      run: pnpm test:coverage

.github/workflows/analyse.yml

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+name: Analyse package health
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # Quality Gate Stage
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Lint
+        uses: ./.github/actions/lint
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Test
+        uses: ./.github/actions/test
+
+  # Build Stage
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    needs: [lint, test]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Build
+        uses: ./.github/actions/build