ci: add build, test, lint, format and example builds with pnpm caching

Author: gregnazario

.github/workflows/ci.yml

@@ -0,0 +1,106 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ["*"]
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+env:
+  CI: true
+
+jobs:
+  build-and-test:
+    name: Build and Test (Node ${{ matrix.node-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: ["18.x", "20.x", "lts/*"]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Setup pnpm 10.11.0
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.11.0
+          run_install: false
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build all packages
+        run: pnpm build
+
+      - name: Run all tests
+        run: pnpm test
+
+  lint-and-format:
+    name: Lint and Format (SDK)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js (LTS)
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
+
+      - name: Setup pnpm 10.11.0
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.11.0
+          run_install: false
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Lint SDK package
+        run: pnpm -F @aptos-labs/script-composer-sdk lint
+
+      - name: Format check SDK package
+        run: pnpm -F @aptos-labs/script-composer-sdk fmt:check
+
+  examples-build:
+    name: Build Example Projects (Next.js & React)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js (LTS)
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
+
+      - name: Setup pnpm 10.11.0
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.11.0
+          run_install: false
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build example projects
+        run: |
+          # Build all workspace packages under examples/** that define a "build" script
+          pnpm -r --filter "./examples/**" run build --if-present