feat: add CI workflow for linting, testing, and building the project

Author: CasperKristiansson

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Test
+        run: npm run test
+
+      - name: Build
+        run: npm run build
+
+      - name: Bundle
+        run: npm run bundle

docs/tasks.md

@@ -83,7 +83,7 @@ Use Context7 MCP for up to date documentation.
        Install `eslint`, `prettier`, `vitest`, `@types/node`, `@vercel/ncc`, `actionlint`.
        Verify: `npm run lint` and `npm run test` pass.
 
-5. [ ] **CI for build/test**
+5. [x] **CI for build/test**
        Workflow `.github/workflows/ci.yml` runs lint, test, build, ncc.
        Verify: CI green on PR.