chore: Add validation pipeline

Author: PrettyCoffee

.github/workflows/validate.yml

@@ -0,0 +1,24 @@
+name: Validate code
+
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+          
+      - name: Install dependencies
+        run: npm ci
+        
+      - name: Build project
+        run: npm run build
+        
+      - name: Lint code
+        run: npm run lint