chore(frontend+infra): re-enable browser environment for Kotlin JS with NodeJs workaround

- Applied Root NodeJs plugin initialization to resolve Gradle 9/KMP race condition.
- Restored `browser {}` configuration in multiple frontend modules, with JS test tasks disabled to prevent redundant execution.

build.gradle.kts

@@ -2,6 +2,7 @@ import groovy.json.JsonSlurper
 import io.gitlab.arturbosch.detekt.Detekt
 import io.gitlab.arturbosch.detekt.extensions.DetektExtension
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jlleitschuh.gradle.ktlint.KtlintExtension
 import org.jlleitschuh.gradle.ktlint.reporter.ReporterType
@@ -33,6 +34,10 @@ plugins {
   alias(libs.plugins.ktlint)
 }
 
+// Workaround for Gradle 9 / KMP Race Condition:
+// Wir erzwingen die Initialisierung des NodeJsRootPlugins im Root-Projekt
+apply<NodeJsRootPlugin>()
+
 // ##################################################################
 // ###                  ALLPROJECTS CONFIGURATION                 ###
 // ##################################################################
@@ -252,7 +257,8 @@ tasks.register("checkBundleBudget") {
       }
 
       // Collect JS files under distributions (avoid .map and .txt)
-      val jsFiles = distDir.walkTopDown().filter { it.isFile && it.extension == "js" && !it.name.endsWith(".map") }.toList()
+      val jsFiles =
+        distDir.walkTopDown().filter { it.isFile && it.extension == "js" && !it.name.endsWith(".map") }.toList()
       if (jsFiles.isEmpty()) {
         report.appendLine("- ${shell.path}: no JS artifacts found in ${distDir.path}")
         return@forEach

core/core-domain/build.gradle.kts

@@ -12,7 +12,12 @@ kotlin {
 
   js(IR) {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)

frontend/core/auth/build.gradle.kts

@@ -15,8 +15,12 @@ kotlin {
 
   js {
     binaries.library()
-    // browser {} block is intentionally removed to prevent "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
-    // The warning "JS Environment Not Selected" is acceptable for now.
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

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

@@ -9,7 +9,12 @@ kotlin {
   jvm()
   js(IR) {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/core/domain/build.gradle.kts

@@ -12,7 +12,12 @@ kotlin {
   jvm()
   js {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/core/local-db/build.gradle.kts

@@ -12,7 +12,12 @@ kotlin {
   jvm()
   js {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/core/navigation/build.gradle.kts

@@ -13,7 +13,12 @@ kotlin {
   jvm()
   js {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/core/network/build.gradle.kts

@@ -12,7 +12,12 @@ kotlin {
   jvm()
   js {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/core/sync/build.gradle.kts

@@ -7,7 +7,12 @@ kotlin {
   jvm()
   js(IR) {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {

frontend/features/ping-feature/build.gradle.kts

@@ -17,7 +17,12 @@ kotlin {
   jvm()
   js {
     binaries.library()
-    // browser {} block removed to fix "Plugin loaded multiple times" error.
+    // Re-enabled browser environment after Root NodeJs fix
+    browser {
+        testTask {
+            enabled = false
+        }
+    }
   }
 
   sourceSets {