refactor: r8 build optmisations

app/build.gradle.kts

@@ -33,6 +33,10 @@ android {
         targetSdk = 36
         versionCode = 1
         versionName = "0.1.0"
+        androidResources {
+            localeFilters += setOf("en", "es", "eu")
+        }
+
 
         // testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         testInstrumentationRunner = "androidx.benchmark.junit4.AndroidBenchmarkRunner"
@@ -52,8 +56,8 @@ android {
 
     buildTypes {
         release {
-            // isMinifyEnabled = true          // Enables R8/ProGuard shrinking
-            // isShrinkResources = true        // Removes unused resources
+            isMinifyEnabled = true          // Enables R8/ProGuard shrinking
+            isShrinkResources = true        // Removes unused resources
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
@@ -62,6 +66,8 @@ android {
         }
         create("benchmark") {
             initWith(buildTypes.getByName("release"))
+            isMinifyEnabled = false       // benchmarks must not be minified
+            isShrinkResources = false     // or results are meaningless
             signingConfig = signingConfigs.getByName("debug")  // sign with debug key for easy deployment
             installation {
                 enableBaselineProfile = false   // ← disables profile embedding for this build type only
@@ -116,7 +122,7 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(platform(libs.androidx.compose.bom))
     androidTestImplementation(libs.androidx.compose.ui.test.junit4)
-    implementation(libs.androidx.benchmark.junit4)
+    androidTestImplementation(libs.androidx.benchmark.junit4)
     androidTestImplementation(libs.androidx.runner)
     androidTestImplementation(libs.androidx.test.ext.junit)
     androidTestImplementation(libs.androidx.espresso.core)
@@ -128,7 +134,7 @@ dependencies {
     implementation(libs.retrofit2.retrofit)
     implementation(libs.converter.gson)
     implementation(libs.okhttp)
-    implementation(libs.logging.interceptor)
+    debugImplementation(libs.logging.interceptor)
 
     // Coroutines
     implementation(libs.kotlinx.coroutines.android)