diff --git a/.gitea/workflows/docker-publish.yaml b/.gitea/workflows/docker-publish.yaml
index 93ec808d..0de82d8f 100644
--- a/.gitea/workflows/docker-publish.yaml
+++ b/.gitea/workflows/docker-publish.yaml
@@ -74,6 +74,18 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
+      # Cache-Cleanup: Entfernt inkonsistente Node/Yarn-Caches die zu mysteriösen Build-Fehlern führen können.
+      # Hintergrund: git-clone warnings ("some refs were not updated") deuten auf korrupte Runner-Caches hin.
+      # Dieser Step ist idempotent — schlägt nie fehl, auch wenn die Verzeichnisse nicht existieren.
+      - name: Cleanup stale build caches
+        if: matrix.service == 'web-app'
+        run: |
+          echo "Cleaning stale Kotlin/JS and Node caches..."
+          rm -rf frontend/shells/meldestelle-portal/build/js/node_modules/.cache || true
+          rm -rf frontend/shells/meldestelle-portal/build/js/.yarn/cache || true
+          rm -rf ~/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-compiler-embeddable || true
+          echo "Cache cleanup done."
+
       - name: Build Frontend (Kotlin JS)
         if: matrix.service == 'web-app'
         run: |
diff --git a/frontend/shells/meldestelle-portal/build.gradle.kts b/frontend/shells/meldestelle-portal/build.gradle.kts
index 49cddb2a..aeee3543 100644
--- a/frontend/shells/meldestelle-portal/build.gradle.kts
+++ b/frontend/shells/meldestelle-portal/build.gradle.kts
@@ -37,12 +37,8 @@ kotlin {
         else
           KotlinWebpackConfig.Mode.DEVELOPMENT
 
-        // Source Maps Optimierung: Im Production Mode standardmäßig AUS, außer explizit gewünscht.
-        // Das beschleunigt den Build massiv.
-        if (mode == KotlinWebpackConfig.Mode.PRODUCTION && !project.hasProperty("enableSourceMaps")) {
-            sourceMaps = false
-        }
-
+        // Source Maps: Im Production-Mode standardmäßig AUS (außer explizit via -PenableSourceMaps).
+        // Beschleunigt den Build massiv und reduziert Bundle-Größe.
         if (mode == KotlinWebpackConfig.Mode.PRODUCTION && !project.hasProperty("enableSourceMaps")) {
           sourceMaps = false
         }
@@ -50,6 +46,9 @@ kotlin {
 
       webpackTask {
         mainOutputFileName = "web-app.js"
+        // Minification wird via webpack.config.d/z_disable-minification.js deaktiviert,
+        // um den Terser-Crash mit SQLite-WASM (sqlite3-worker1.mjs) zu verhindern.
+        // Siehe: webpack.config.d/z_disable-minification.js
       }
 
       // Development Server konfigurieren
diff --git a/frontend/shells/meldestelle-portal/webpack.config.d/sqlite-config.js b/frontend/shells/meldestelle-portal/webpack.config.d/sqlite-config.js
index a849f600..7af13ea6 100644
--- a/frontend/shells/meldestelle-portal/webpack.config.d/sqlite-config.js
+++ b/frontend/shells/meldestelle-portal/webpack.config.d/sqlite-config.js
@@ -137,36 +137,7 @@ config.devServer.devMiddleware.mimeTypes = {
   'application/javascript': ['js']
 };
 
-// 10. OPTIMIZATION: Aggressively disable ALL minimizers
-// This is the ONLY stable way to prevent the Terser crash with SQLite-WASM
-// in Kotlin/JS Production builds.
-if (config.optimization) {
-  console.log("SQLite Config: Aggressively removing minimizers to prevent Terser errors.");
-  config.optimization.minimize = false;
-  config.optimization.minimizer = []; // Das hier ist das entscheidende "Brecheisen"
-}
-
-/*// 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];
-            }
-        }
-    });
-}*/
+// 10. OPTIMIZATION: Handled by z_disable-minification.js
+// Minification is disabled in the alphabetically-last config file to ensure
+// it cannot be overridden by any subsequent Kotlin/JS or plugin step.
+// See: webpack.config.d/z_disable-minification.js
diff --git a/frontend/shells/meldestelle-portal/webpack.config.d/z_disable-minification.js b/frontend/shells/meldestelle-portal/webpack.config.d/z_disable-minification.js
new file mode 100644
index 00000000..c48f59df
--- /dev/null
+++ b/frontend/shells/meldestelle-portal/webpack.config.d/z_disable-minification.js
@@ -0,0 +1,27 @@
+// ============================================================
+// FINAL GUARD: Disable ALL Minification for SQLite-WASM stability
+// ============================================================
+// WHY THIS FILE EXISTS:
+//   Kotlin/JS loads webpack.config.d files in alphabetical order.
+//   This file is prefixed with "z_" to ensure it runs LAST —
+//   AFTER Kotlin/JS and all other plugins have had their chance
+//   to set config.optimization. This guarantees that no Terser
+//   or other minimizer plugin can re-enable itself after this point.
+//
+// ROOT CAUSE:
+//   sqlite3-worker1.mjs contains a top-level `return` statement
+//   that is valid for browser-worker scripts but crashes Terser.
+//   Disabling minification for the entire shell module is the
+//   most stable fix in the context of WASM-heavy KMP projects.
+//   (Performance trade-off is negligible for WASM bundles.)
+//
+// REFERENCE: docs/99_Journal for build history.
+// ============================================================
+
+console.log("[z_disable-minification] Enforcing minimize=false as FINAL webpack config step.");
+
+config.optimization = config.optimization || {};
+config.optimization.minimize = false;
+config.optimization.minimizer = [];
+
+console.log("[z_disable-minification] Terser and all minimizers are now DISABLED.");