Add GitHub Actions workflow for production Android APK builds

.github/workflows/deploy.yml

@@ -0,0 +1,34 @@
+name: Production Build & Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-android-apk:
+    name: Build Android APK
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci --legacy-peer-deps
+
+      - name: Setup Expo and EAS
+        uses: expo/expo-github-action@v8
+        with:
+          eas-version: latest
+          token: ${{ secrets.EXPO_TOKEN }}
+
+      - name: Build Android APK
+        working-directory: apps/mobile
+        run: eas build --platform android --profile production --non-interactive
+

apps/mobile/eas.json

@@ -12,7 +12,10 @@
       "distribution": "internal"
     },
     "production": {
-      "autoIncrement": true
+      "autoIncrement": true,
+      "android": {
+        "buildType": "apk"
+      }
     }
   },
   "submit": {