Add AI DEV Node deployment foundation

server/config/env.ts

@@ -0,0 +1,28 @@
+import { existsSync } from 'node:fs';
+import path from 'node:path';
+import dotenv from 'dotenv';
+
+const projectEnvPath = path.resolve(process.cwd(), '.project-env');
+const dotEnvPath = path.resolve(process.cwd(), '.env');
+
+if (existsSync(projectEnvPath)) {
+  dotenv.config({ path: projectEnvPath });
+} else if (existsSync(dotEnvPath)) {
+  dotenv.config({ path: dotEnvPath });
+}
+
+export const env = {
+  nodeEnv: process.env.NODE_ENV ?? 'development',
+  port: Number(process.env.PORT ?? 3000),
+  databaseUrl: process.env.DATABASE_URL,
+  sessionSecret: process.env.SESSION_SECRET ?? 'dev-only-change-me',
+  publicBaseUrl: process.env.ACS_PUBLIC_BASE_URL ?? 'http://localhost:3000',
+  smsProvider: process.env.ACS_SMS_PROVIDER ?? 'dev',
+};
+
+export function requireDatabaseUrl(): string {
+  if (!env.databaseUrl) {
+    throw new Error('DATABASE_URL is required. In AI DEV it should be supplied by .project-env.');
+  }
+  return env.databaseUrl;
+}