Initial commit: InTono — app KMP per l'apprendimento musicale

App Kotlin Multiplatform (Android/iOS/Desktop) con Compose Multiplatform:
controllo intonazione (YIN), pratica guidata, metronomo, ear training,
sfide, scansione spartiti via AI, spartiti bundled e pentagramma con
glifi tipografici, travature, battute e spaziatura proporzionale.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/build.gradle.kts

@@ -0,0 +1,70 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+}
+
+android {
+    namespace = "com.notemusicali"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "com.notemusicali"
+        minSdk = 26
+        targetSdk = 35
+        versionCode = 1
+        versionName = "1.0"
+    }
+
+    signingConfigs {
+        create("release") {
+            val keystorePath = System.getenv("INTONO_KEYSTORE_PATH")
+            if (keystorePath != null) {
+                storeFile = file(keystorePath)
+                storePassword = System.getenv("INTONO_KEYSTORE_PASSWORD")
+                keyAlias = System.getenv("INTONO_KEY_ALIAS")
+                keyPassword = System.getenv("INTONO_KEY_PASSWORD")
+            }
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+            val keystorePath = System.getenv("INTONO_KEYSTORE_PATH")
+            if (keystorePath != null) {
+                signingConfig = signingConfigs.getByName("release")
+            }
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+
+    buildFeatures {
+        compose = true
+    }
+}
+
+dependencies {
+    implementation(project(":shared"))
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.material3)
+
+    debugImplementation(libs.androidx.ui.tooling)
+}