refactor: flatten monorepo into standalone project

src/env.ts

@@ -0,0 +1,14 @@
+import { createEnv } from '@t3-oss/env-core'
+import { z } from 'zod'
+
+export const env = createEnv({
+  server: {
+    DATABASE_URL: z.url(),
+  },
+  clientPrefix: 'VITE_',
+  client: {
+    VITE_APP_TITLE: z.string().min(1).optional(),
+  },
+  runtimeEnv: process.env,
+  emptyStringAsUndefined: true,
+})