Implement authentication phase with Cidaas OAuth2 integration

- Add authentication middleware to protect routes
- Create API endpoints for login, logout, registration, and user info
- Develop UI components for login and registration forms
- Integrate VeeValidate for form validation
- Update environment configuration for Cidaas settings
- Add i18n support for English and German languages
- Enhance Tailwind CSS for improved styling of auth components
- Document authentication flow and testing procedures

server/utils/db.ts

@@ -32,3 +32,13 @@ const client = postgres(config.databaseUrl)
 
 // Create Drizzle ORM instance with schema
 export const db = drizzle(client, { schema })
+
+/**
+ * Helper function to get database instance
+ * Used in event handlers for consistency with Nuxt patterns
+ *
+ * @returns Drizzle database instance
+ */
+export function useDatabase() {
+  return db
+}