So mit neuen UI Ideen und so

backend/src/config/appConfig.ts

@@ -0,0 +1,43 @@
+import dotenv from 'dotenv'
+
+// Load environment variables early
+dotenv.config()
+
+export interface AppConfig {
+  nodeEnv: string
+  port: number
+  jwtSecret: string | null
+  email: {
+    host?: string
+    port?: number
+    user?: string
+    pass?: string
+    secure?: boolean
+    from?: string
+  }
+}
+
+export function getConfig(): AppConfig {
+  return {
+    nodeEnv: process.env.NODE_ENV || 'development',
+    port: Number(process.env.PORT || 3004),
+    jwtSecret: process.env.JWT_SECRET || null,
+    email: {
+      host: process.env.EMAIL_HOST,
+      port: process.env.EMAIL_PORT ? Number(process.env.EMAIL_PORT) : undefined,
+      user: process.env.EMAIL_USER,
+      pass: process.env.EMAIL_PASS,
+      secure: process.env.EMAIL_SECURE === 'true',
+      from: process.env.EMAIL_FROM,
+    },
+  }
+}
+
+export function assertProdSecretsSet(cfg: AppConfig) {
+  if (cfg.nodeEnv === 'production') {
+    if (!cfg.jwtSecret) {
+      throw new Error('JWT_SECRET must be set in production')
+    }
+  }
+}
+