Add CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,91 @@
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Test
+        run: npm run test
+
+  verify-build:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Verify no changes to built output
+        run: |
+          if [ -n "$(git status --porcelain dist/)" ]; then
+            echo "::error::Built output has uncommitted changes. Please run 'npm run build' and commit the changes."
+            git diff dist/
+            exit 1
+          else
+            echo "✅ Built output is up-to-date"
+          fi

.github/workflows/pull-request.yml

@@ -0,0 +1,22 @@
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  update-status:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Diff Status Action
+        uses: ./
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          globs: |
+            **/*.md
+          statuses: |
+            build
+            lint
+            test
+            verify-build