ci: upload debug APK as artifact for easy phone testing

Author: CybotTM

.github/workflows/ci.yml

@@ -71,6 +71,13 @@ jobs:
       - name: Build debug APK
         run: ./gradlew assembleDebug --no-daemon
 
+      - name: Upload debug APK
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        with:
+          name: kidsync-debug-apk
+          path: android/app/build/outputs/apk/debug/app-debug.apk
+          retention-days: 30
+
       - name: Upload lint report
         if: always()
         uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0