DOT-175: Add CI workflow and npm pack dry-run

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    name: Typecheck, test, and pack dry-run
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e
+        with:
+          node-version: 24
+          package-manager-cache: false
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run check
+        run: npm run check

package.json

@@ -31,7 +31,7 @@
   "scripts": {
     "typecheck": "tsc --noEmit",
     "test": "node --import tsx --test \"test/**/*.test.ts\"",
-    "check": "npm run typecheck && npm test",
+    "check": "npm run typecheck && npm test && npm run release:npm:dry",
     "release:npm:dry": "npm pack --dry-run",
     "prepublishOnly": "npm run check"
   },