Source Code added

.github/workflows/app-build.yaml

@@ -0,0 +1,36 @@
+name: App / Build
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - name: Setup Java
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # v4.2.1
+        with:
+          distribution: temurin
+          java-version: 17
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@dbbdc275be76ac10734476cc723d82dfe7ec6eda # v3.4.2
+      - name: Assemble debug APKs
+        run: ./gradlew assembleDebug
+      - name: Create publish bundle
+        run: mkdir -p build/gh-app-publish/; find app/build/ -iname "*.apk" -exec mv "{}" build/gh-app-publish/ \;
+      - name: Upload artifacts
+        uses: actions/upload-artifact@0b2256b8c012f0828dc542b3febcab082c67f72b # v4.3.4
+        with:
+          name: build-artifacts
+          retention-days: 14
+          if-no-files-found: error
+          path: build/gh-app-publish/