feat: add runtime configuration for Caddy-based SPA containerization

Introduced `config.json` runtime configuration fetch mechanism to support the "Build Once, Deploy Everywhere" pattern. Replaced NGINX with Caddy for SPA deployment, enabling SPA routing, security headers, and static asset management. Updated Gradle and Kotlin/JS build configurations to align with the new runtime environment. Enhanced Dockerfile and health checks for optimized CI/CD workflows and improved SPA delivery.

frontend/core/network/build.gradle.kts

@@ -9,39 +9,23 @@ plugins {
 }
 
 kotlin {
-  // Toolchain is now handled centrally in the root build.gradle.kts
-
   jvm()
   js {
+    binaries.library()
     browser {
-      testTask { enabled = false }
+        testTask { enabled = false }
     }
   }
 
-  // Wasm vorerst deaktiviert
-  /*
-  @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
-  wasmJs { browser() }
-  */
-
   sourceSets {
     commonMain.dependencies {
-      // Ktor Client core + JSON and Auth + Logging + Timeouts + Retry
       api(libs.ktor.client.core)
       implementation(libs.ktor.client.contentNegotiation)
       implementation(libs.ktor.client.serialization.kotlinx.json)
       implementation(libs.ktor.client.auth)
       implementation(libs.ktor.client.logging)
-      // ktor-client-resources optional; disabled until version is added to catalog
-
-      // Kotlinx core bundles
       implementation(libs.kotlinx.coroutines.core)
-
-      // DI (Koin)
       api(libs.koin.core)
-
-      // Project modules via typesafe accessors
-      // (none here; kept for consistency)
     }
 
     jvmMain.dependencies {
@@ -51,13 +35,6 @@ kotlin {
     jsMain.dependencies {
       implementation(libs.ktor.client.js)
     }
-
-    /*
-    val wasmJsMain = getByName("wasmJsMain")
-    wasmJsMain.dependencies {
-      implementation(libs.ktor.client.js)
-    }
-    */
   }
 }