Refactor ci

.github/workflows/ci.yaml

@@ -0,0 +1,33 @@
+name: CI Verification
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+# Cancel redundant, in-progress runs for the same branch or PR
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  verify:
+    name: Build & Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+          cache: 'gradle'
+
+      - name: Verify with Gradle
+        # The 'build' command will compile, run tests, and package the app.
+        # If any step fails, the workflow will fail, protecting your main branch.
+        run: ./gradlew build
+