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

app/build.gradle.kts

@@ -0,0 +1,84 @@
+import java.util.Properties
+
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.kotlin.serialization)
+}
+
+// Signeringsnyckeln är inte incheckad. Lokalt ligger den i signing/ (gitignorerad),
+// i CI skrivs den dit från Actions-secrets. Saknas den signeras release med
+// debug-nyckeln så att en färsk klon ändå kan bygga.
+val keystorePropsFile = rootProject.file("signing/keystore.properties")
+val keystoreProps: Properties? = keystorePropsFile.takeIf { it.exists() }?.let { file ->
+    Properties().apply { file.inputStream().use { load(it) } }
+}
+
+// CI (Gitea Actions) sätter GITHUB_RUN_NUMBER — ger stigande versionCode så
+// att telefonen accepterar varje nytt CI-bygge som en uppdatering.
+val ciRunNumber = System.getenv("GITHUB_RUN_NUMBER")?.toIntOrNull()
+
+android {
+    namespace = "eu.brassepc.fitnessdroid"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "eu.brassepc.fitnessdroid"
+        minSdk = 31
+        targetSdk = 35
+        versionCode = ciRunNumber ?: 1
+        versionName = "0.1.0" + (ciRunNumber?.let { "+build.$it" } ?: "-dev")
+    }
+
+    signingConfigs {
+        keystoreProps?.let { props ->
+            create("release") {
+                storeFile = rootProject.file("signing/${props.getProperty("storeFile")}")
+                storePassword = props.getProperty("storePassword")
+                keyAlias = props.getProperty("keyAlias")
+                keyPassword = props.getProperty("keyPassword")
+            }
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            signingConfig = if (keystoreProps != null) {
+                signingConfigs.getByName("release")
+            } else {
+                signingConfigs.getByName("debug")
+            }
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+    buildFeatures {
+        compose = true
+    }
+}
+
+dependencies {
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.compose)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.compose.ui)
+    implementation(libs.androidx.compose.ui.graphics)
+    implementation(libs.androidx.compose.ui.tooling.preview)
+    implementation(libs.androidx.compose.material3)
+    implementation(libs.androidx.compose.material.icons.extended)
+    implementation(libs.androidx.navigation.compose)
+    implementation(libs.androidx.datastore.preferences)
+    implementation(libs.okhttp)
+    implementation(libs.kotlinx.serialization.json)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+}