Add C64 SID audio output via OpenSL ES with sound toggle

SchwertUndMagieOnPebbleCompanionApp/app/build.gradle.kts

@@ -130,6 +130,48 @@ tasks.whenTaskAdded {
     }
 }
 
+// ---------------------------------------------------------------------------
+// ROM extraction task
+//
+// Extracts C64 and drive ROMs from the bundled VICE tarball into the Android
+// assets directory so they are packaged into the APK automatically.
+// Output files are gitignored — the tarball is the single source of truth.
+// ---------------------------------------------------------------------------
+
+val assetsDir = layout.projectDirectory.dir("src/main/assets")
+
+tasks.register<Copy>("extractViceRoms") {
+    group = "build"
+    description = "Extract C64 and 1541 ROMs from the VICE tarball into assets/"
+
+    from(tarTree(viceTarball.asFile)) {
+        include("vice-3.8/data/C64/kernal-901227-03.bin")
+        include("vice-3.8/data/C64/basic-901226-01.bin")
+        include("vice-3.8/data/C64/chargen-901225-01.bin")
+        include("vice-3.8/data/DRIVES/dos1541-325302-01+901229-05.bin")
+        eachFile {
+            // Flatten the tarball directory structure: place each ROM directly
+            // in assets/ with its short name rather than the versioned filename.
+            relativePath = RelativePath(true, when (name) {
+                "kernal-901227-03.bin"            -> "kernal"
+                "basic-901226-01.bin"             -> "basic"
+                "chargen-901225-01.bin"           -> "chargen"
+                "dos1541-325302-01+901229-05.bin" -> "1541"
+                else -> name
+            })
+        }
+        includeEmptyDirs = false
+    }
+    into(assetsDir)
+}
+
+// Run extractViceRoms before assets are merged into the APK.
+tasks.whenTaskAdded {
+    if (name.startsWith("merge") && name.endsWith("Assets")) {
+        dependsOn("extractViceRoms")
+    }
+}
+
 dependencies {
     implementation(libs.androidx.activity.ktx)
     implementation(libs.androidx.appcompat)