build: switch to hybrid build for Kotlin/JS web-app and optimize Docker setup

Replaced multi-stage Docker builds with a hybrid approach that pre-builds frontend artifacts locally and copies them into the container. Removed Kotlin Multiplatform configurations from the root project to resolve NodeJsRootPlugin conflicts. Adjusted `.dockerignore` to allow pre-built artifacts and increased Gradle/Kotlin daemon memory for faster builds. Updated Caddyfile for runtime stability and added documentation for new build processes.

core/core-domain/build.gradle.kts

@@ -1,6 +1,5 @@
 plugins {
-  // Fix for "Plugin loaded multiple times": Apply plugin by ID without version (inherited from root)
-  id("org.jetbrains.kotlin.multiplatform")
+  alias(libs.plugins.kotlinMultiplatform)
   alias(libs.plugins.kotlinSerialization)
 }
 
@@ -15,16 +14,16 @@ kotlin {
     binaries.library()
     // Re-enabled browser environment after Root NodeJs fix
     browser {
-        testTask {
-            enabled = false
-        }
+      testTask {
+        enabled = false
+      }
     }
   }
 
   @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
   wasmJs {
-      binaries.library()
-      browser()
+    binaries.library()
+    browser()
   }
 
   sourceSets {

core/core-utils/build.gradle.kts

@@ -1,40 +1,43 @@
 plugins {
-    // Fix for "Plugin loaded multiple times": Apply plugin by ID without version (inherited from root)
-    id("org.jetbrains.kotlin.multiplatform")
-    alias(libs.plugins.kotlinSerialization)
+  alias(libs.plugins.kotlinMultiplatform)
+  alias(libs.plugins.kotlinSerialization)
 }
 
 kotlin {
-    jvm()
-    js {
-        browser()
-    }
-    // Wasm support enabled?
-    @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
-    wasmJs {
-        browser()
+  jvm()
+  js {
+    browser {
+      testTask {
+        enabled = false
+      }
     }
+  }
+  // Wasm support enabled?
+  @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
+  wasmJs {
+    browser()
+  }
 
-    sourceSets {
-        commonMain {
-            dependencies {
-                implementation(projects.core.coreDomain)
-                implementation(libs.kotlinx.serialization.json)
-                implementation(libs.kotlinx.datetime)
-                implementation(libs.kotlinx.coroutines.core)
-            }
-        }
-        commonTest {
-            dependencies {
-                implementation(libs.kotlin.test)
-            }
-        }
-        jvmMain {
-            dependencies {
-                // Removed Exposed dependencies to make this module KMP compatible
-                // implementation(libs.exposed.core)
-                // implementation(libs.exposed.jdbc)
-            }
-        }
+  sourceSets {
+    commonMain {
+      dependencies {
+        implementation(projects.core.coreDomain)
+        implementation(libs.kotlinx.serialization.json)
+        implementation(libs.kotlinx.datetime)
+        implementation(libs.kotlinx.coroutines.core)
+      }
     }
+    commonTest {
+      dependencies {
+        implementation(libs.kotlin.test)
+      }
+    }
+    jvmMain {
+      dependencies {
+        // Removed Exposed dependencies to make this module KMP compatible
+        // implementation(libs.exposed.core)
+        // implementation(libs.exposed.jdbc)
+      }
+    }
+  }
 }