chore(frontend+infra): optimize build process and exclude SQLite workers from minification

- Updated Webpack config to exclude SQLite workers from parsing and Terser minification, fixing related errors and improving build speed.
- Adjusted Dockerfile to disable source maps for production builds, reducing build time and memory usage.
- Modified Gradle build configuration to respect the `noSourceMaps` flag during Docker builds.

config/docker/nginx/web-app/Dockerfile

@@ -1,13 +1,13 @@
 # syntax=docker/dockerfile:1.8
 # ===================================================================
 # Multi-Stage Dockerfile for Meldestelle Web-App (Kotlin/JS)
-# Version: 2.3.0 - Optimized for Production Build
+# Version: 2.3.1 - Optimized for Production Build (No Source Maps)
 # ===================================================================
 
 # === GLOBAL ARGS ===
-ARG GRADLE_VERSION=8.5
-ARG JAVA_VERSION=21
-ARG NGINX_IMAGE_TAG=1.25-alpine
+ARG GRADLE_VERSION=9.2.1
+ARG JAVA_VERSION=25
+ARG NGINX_IMAGE_TAG=1.28-alpine
 ARG VERSION=1.0.0-SNAPSHOT
 ARG BUILD_DATE
 
@@ -49,10 +49,12 @@ RUN mkdir -p docs
 
 # 4. Build Web App (Production Only)
 # We explicitly build the production distribution for optimized artifacts.
+# Added -PnoSourceMaps=true to disable source maps and speed up build/reduce memory usage.
 RUN --mount=type=cache,target=/home/gradle/.gradle/caches \
     --mount=type=cache,target=/home/gradle/.gradle/wrapper \
     ./gradlew :frontend:shells:meldestelle-portal:jsBrowserDistribution \
     -Pproduction=true \
+    -PnoSourceMaps=true \
     --no-daemon \
     --stacktrace
 

frontend/shells/meldestelle-portal/build.gradle.kts

@@ -39,6 +39,11 @@ kotlin {
           KotlinWebpackConfig.Mode.PRODUCTION
         else
           KotlinWebpackConfig.Mode.DEVELOPMENT
+
+        // Source Maps Optimierung für Docker Builds
+        if (project.hasProperty("noSourceMaps")) {
+            sourceMaps = false
+        }
       }
 
       webpackTask {

frontend/shells/meldestelle-portal/webpack.config.d/sqlite-config.js

@@ -136,3 +136,28 @@ config.devServer.devMiddleware.mimeTypes = {
     'application/wasm': ['wasm'],
     'application/javascript': ['js']
 };
+
+// 10. OPTIMIZATION: Exclude SQLite workers from parsing and minification
+// This fixes the "return outside of function" error in Terser and speeds up build
+config.module.noParse = config.module.noParse || [];
+if (Array.isArray(config.module.noParse)) {
+    config.module.noParse.push(/sqlite3-worker1\.mjs/);
+    config.module.noParse.push(/sqlite3\.mjs/);
+} else {
+    // If it's a function or RegExp, we wrap it (simplified for now, assuming array or undefined)
+    config.module.noParse = [config.module.noParse, /sqlite3-worker1\.mjs/, /sqlite3\.mjs/];
+}
+
+if (config.optimization && config.optimization.minimizer) {
+    config.optimization.minimizer.forEach(minimizer => {
+        if (minimizer.constructor.name === 'TerserPlugin') {
+            minimizer.options.exclude = minimizer.options.exclude || [];
+            const excludePattern = /sqlite3-worker1\.mjs/;
+            if (Array.isArray(minimizer.options.exclude)) {
+                minimizer.options.exclude.push(excludePattern);
+            } else {
+                minimizer.options.exclude = [minimizer.options.exclude, excludePattern];
+            }
+        }
+    });
+}