chore: remove obsolete Android app configuration files

- Deleted build.gradle.kts, gradle.properties, and gradlew files as part of the cleanup process.
- Removed local.properties and various generated files from the .gradle directory to streamline the project structure.
- Cleared out unnecessary build artifacts and intermediate files to improve project maintainability.

android-app/.gradle/buildOutputCleanup/cache.properties

@@ -1,2 +0,0 @@
-#Thu Mar 05 14:01:17 CET 2026
-gradle.version=8.7

android-app/app/build.gradle.kts

@@ -1,130 +0,0 @@
-plugins {
-    id("com.android.application")
-    id("org.jetbrains.kotlin.android")
-    id("org.jetbrains.kotlin.plugin.serialization")
-    id("org.jetbrains.kotlin.plugin.compose")
-}
-
-fun propOrEnv(name: String, defaultValue: String): String {
-    val gradleValue = project.findProperty(name) as String?
-    val envValue = System.getenv(name)
-    return when {
-        !gradleValue.isNullOrBlank() -> gradleValue
-        !envValue.isNullOrBlank() -> envValue
-        else -> defaultValue
-    }
-}
-
-android {
-    namespace = "de.trainingstagebuch.app"
-    compileSdk = 34
-
-    defaultConfig {
-        applicationId = "de.trainingstagebuch.app"
-        minSdk = 26
-        targetSdk = 34
-        versionCode = 1
-        versionName = "1.0"
-
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-        vectorDrawables {
-            useSupportLibrary = true
-        }
-    }
-
-    buildTypes {
-        debug {
-            applicationIdSuffix = ".debug"
-            versionNameSuffix = "-debug"
-            resValue("string", "app_name", "Trainingstagebuch Debug")
-            buildConfigField(
-                "String",
-                "API_BASE_URL",
-                "\"${propOrEnv("API_BASE_URL_DEBUG", "http://10.0.2.2:3005/api/")}\""
-            )
-            buildConfigField(
-                "String",
-                "SOCKET_BASE_URL",
-                "\"${propOrEnv("SOCKET_BASE_URL_DEBUG", "http://10.0.2.2:3005")}\""
-            )
-        }
-        release {
-            isMinifyEnabled = false
-            resValue("string", "app_name", "Trainingstagebuch")
-            buildConfigField(
-                "String",
-                "API_BASE_URL",
-                "\"${propOrEnv("API_BASE_URL_RELEASE", "http://10.0.2.2:3005/api/")}\""
-            )
-            buildConfigField(
-                "String",
-                "SOCKET_BASE_URL",
-                "\"${propOrEnv("SOCKET_BASE_URL_RELEASE", "http://10.0.2.2:3005")}\""
-            )
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-        }
-    }
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-    kotlinOptions {
-        jvmTarget = "17"
-    }
-
-    buildFeatures {
-        compose = true
-        buildConfig = true
-    }
-
-    packaging {
-        resources {
-            excludes += "/META-INF/{AL2.0,LGPL2.1}"
-        }
-    }
-}
-
-tasks.register<Exec>("checkI18nHardcodedUiStrings") {
-    workingDir = rootProject.projectDir
-    commandLine("bash", "scripts/check_no_hardcoded_ui_strings.sh")
-}
-
-tasks.named("preBuild").configure {
-    dependsOn("checkI18nHardcodedUiStrings")
-}
-
-dependencies {
-    val composeBom = platform("androidx.compose:compose-bom:2024.10.01")
-
-    implementation("androidx.core:core-ktx:1.13.1")
-    implementation("androidx.appcompat:appcompat:1.7.0")
-    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.7")
-    implementation("androidx.activity:activity-compose:1.9.3")
-    implementation(composeBom)
-    implementation("androidx.compose.ui:ui")
-    implementation("androidx.compose.ui:ui-graphics")
-    implementation("androidx.compose.ui:ui-tooling-preview")
-    implementation("androidx.compose.material3:material3")
-
-    implementation("androidx.navigation:navigation-compose:2.8.3")
-    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.7")
-    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.7")
-
-    implementation("androidx.datastore:datastore-preferences:1.1.1")
-
-    implementation("com.squareup.retrofit2:retrofit:2.11.0")
-    implementation("com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:1.0.0")
-    implementation("com.squareup.okhttp3:okhttp:4.12.0")
-    implementation("com.squareup.okhttp3:logging-interceptor:4.12.0")
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
-
-    testImplementation("junit:junit:4.13.2")
-
-    debugImplementation(composeBom)
-    debugImplementation("androidx.compose.ui:ui-tooling")
-    debugImplementation("androidx.compose.ui:ui-test-manifest")
-}

android-app/app/build/generated/res/resValues/debug/values/gradleResValues.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <!-- Automatically generated file. DO NOT MODIFY -->
-
-    <!-- Value from build type: debug -->
-    <string name="app_name" translatable="false">Trainingstagebuch Debug</string>
-
-</resources>

android-app/app/build/generated/source/buildConfig/debug/de/trainingstagebuch/app/BuildConfig.java

@@ -1,16 +0,0 @@
-/**
- * Automatically generated file. DO NOT MODIFY
- */
-package de.trainingstagebuch.app;
-
-public final class BuildConfig {
-  public static final boolean DEBUG = Boolean.parseBoolean("true");
-  public static final String APPLICATION_ID = "de.trainingstagebuch.app.debug";
-  public static final String BUILD_TYPE = "debug";
-  public static final int VERSION_CODE = 1;
-  public static final String VERSION_NAME = "1.0-debug";
-  // Field from build type: debug
-  public static final String API_BASE_URL = "https://tt-tagebuch.de/api/";
-  // Field from build type: debug
-  public static final String SOCKET_BASE_URL = "https://tt-tagebuch.de:3051";
-}

android-app/app/build/intermediates/annotation_processor_list/debug/javaPreCompileDebug/annotationProcessors.json

@@ -1 +0,0 @@
-{}

android-app/app/build/intermediates/apk_ide_redirect_file/debug/createDebugApkListingFileRedirect/redirect.txt

@@ -1,2 +0,0 @@
-#- File Locator -
-listingFile=../../../../outputs/apk/debug/output-metadata.json

android-app/app/build/intermediates/app_metadata/debug/writeDebugAppMetadata/app-metadata.properties

@@ -1,2 +0,0 @@
-appMetadataVersion=1.1
-androidGradlePluginVersion=8.5.2

android-app/app/build/intermediates/compatible_screen_manifest/debug/createDebugCompatibleScreenManifests/output-metadata.json

@@ -1,10 +0,0 @@
-{
-  "version": 3,
-  "artifactType": {
-    "type": "COMPATIBLE_SCREEN_MANIFEST",
-    "kind": "Directory"
-  },
-  "applicationId": "de.trainingstagebuch.app.debug",
-  "variantName": "debug",
-  "elements": []
-}

android-app/app/build/intermediates/dex_number_of_buckets_file/debug/dexBuilderDebug/out

@@ -1 +0,0 @@
-8