Update fun module configuration and enhance CSS styles

- Added 'enabled' property to FunConfigSchema with a default value of true for better configuration management.
- Refactored getFunConfig to return a complete default configuration when no data is found.
- Improved globals.css by expanding CSS variables for light and dark themes, enhancing styling consistency across the application.

apps/webui/src/lib/prisma.ts

@@ -0,0 +1,10 @@
+import { PrismaClient } from '@prisma/client';
+import { env } from './env';
+
+const globalForPrisma = globalThis as unknown as { __nexumiPrisma?: PrismaClient };
+
+export const prisma: PrismaClient = globalForPrisma.__nexumiPrisma ?? new PrismaClient();
+
+if (env.NODE_ENV !== 'production') {
+  globalForPrisma.__nexumiPrisma = prisma;
+}