Grund: Compose-app med login mot gym-API:t, VS Code-task och CI-release

- Kotlin + Jetpack Compose + Material 3, minSdk 31 (Android 12)
- GraphQL-klient (OkHttp) med login/refresh/validate/logout som webben
- Tokenlagring i DataStore, auto-refresh av JWT
- Signering via gitignorerad signing/ lokalt och Actions-secrets i CI
- VS Code build-task -> build/FitnessDroid.apk
- Gitea Actions: bygger APK på Pi5 (arm64, aapt2-override) och publicerar
  rullande latest-release

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Kf4MAbZ3c3B4Xy5XfuGsCP

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,9 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+networkTimeout=10000
+retries=0
+retryBackOffMs=500
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists