Add database integration, auth API, admin/user portals, and deploy-db.sh

src/lib/db.ts

@@ -0,0 +1,14 @@
+import { Pool } from 'pg';
+
+const connectionString = process.env.DATABASE_URL;
+
+if (!connectionString) {
+  throw new Error('DATABASE_URL environment variable is not set');
+}
+
+export const db = new Pool({ connectionString });
+
+export async function query(text: string, params?: unknown[]) {
+  const result = await db.query(text, params);
+  return result;
+}