chore: migriere ComponentPreview-Annotation in konsistente Paketstruktur und bereinige referenzierende Importe

frontend/core/design-system/build.gradle.kts

@@ -9,6 +9,9 @@ plugins {
   alias(libs.plugins.composeMultiplatform)
 }
 
+group = "at.mocode.frontend.core"
+version = "1.0.0"
+
 kotlin {
   jvm()
 
@@ -31,8 +34,13 @@ kotlin {
       implementation(compose.components.resources)
       implementation(libs.bundles.kmp.common)
     }
+
     jvmMain.dependencies {
       implementation(compose.uiTooling)
     }
+
+    wasmJsMain.dependencies {
+      implementation(libs.kotlin.stdlib.wasm.js)
+    }
   }
 }