Initial commit

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '17'
+
+      - name: Validate Gradle wrapper
+        uses: gradle/actions/wrapper-validation@v4
+
+      - name: Set up Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Unit tests (JUnit 5)
+        run: ./gradlew test --no-daemon --stacktrace
+
+      - name: Assemble (debug) + compile instrumented tests
+        # assembleDebugAndroidTest compiles the Compose UI test; it runs on a device via
+        # connectedDebugAndroidTest (locally / on an emulator runner), not in this build job.
+        run: ./gradlew assembleDebug assembleDebugAndroidTest --no-daemon --stacktrace
+
+      - name: Upload test reports
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-reports
+          path: '**/build/reports/tests/'
+          if-no-files-found: ignore