Enhance Vite configuration to load environment variables

- Refactored Vite configuration to load environment variables explicitly based on the current mode
- Added support for additional environment variables: VITE_DAEMON_SOCKET, VITE_API_BASE_URL, VITE_CHAT_WS_URL, and VITE_SOCKET_IO_URL
- Improved clarity and maintainability of the configuration structure

frontend/vite.config.js

@@ -1,17 +1,34 @@
-import { defineConfig } from 'vite';
+import { defineConfig, loadEnv } from 'vite';
 import vue from '@vitejs/plugin-vue';
 import { NodeGlobalsPolyfillPlugin } from '@esbuild-plugins/node-globals-polyfill';
 import { NodeModulesPolyfillPlugin } from '@esbuild-plugins/node-modules-polyfill';
 import path from 'path';
 
-export default defineConfig({
+export default defineConfig(({ mode }) => {
+    // Lade Umgebungsvariablen explizit
+    const env = loadEnv(mode, process.cwd(), '');
+    
+    return {
         plugins: [vue()],
         define: {
             // Explizit Produktionsumgebung setzen
             __DEV__: false,
             'import.meta.env.DEV': false,
             'import.meta.env.PROD': true,
-        'import.meta.env.MODE': '"production"'
+            'import.meta.env.MODE': '"production"',
+            // Stelle sicher, dass Umgebungsvariablen aus .env.production geladen werden
+            ...(env.VITE_DAEMON_SOCKET && {
+                'import.meta.env.VITE_DAEMON_SOCKET': JSON.stringify(env.VITE_DAEMON_SOCKET)
+            }),
+            ...(env.VITE_API_BASE_URL && {
+                'import.meta.env.VITE_API_BASE_URL': JSON.stringify(env.VITE_API_BASE_URL)
+            }),
+            ...(env.VITE_CHAT_WS_URL && {
+                'import.meta.env.VITE_CHAT_WS_URL': JSON.stringify(env.VITE_CHAT_WS_URL)
+            }),
+            ...(env.VITE_SOCKET_IO_URL && {
+                'import.meta.env.VITE_SOCKET_IO_URL': JSON.stringify(env.VITE_SOCKET_IO_URL)
+            })
         },
         optimizeDeps: {
         esbuildOptions: {
@@ -31,4 +48,5 @@ export default defineConfig({
                 assert: 'assert',
             }
         },
-})
+    };
+});