feat: add waitlist signup count

apps/web/src/lib/waitlist.ts

@@ -0,0 +1,15 @@
+import { db } from "@/lib/db";
+import { waitlist } from "@/lib/db/schema";
+import { sql } from "drizzle-orm";
+
+export async function getWaitlistCount() {
+  try {
+    const result = await db
+      .select({ count: sql<number>`count(*)` })
+      .from(waitlist);
+    return result[0]?.count || 0;
+  } catch (error) {
+    console.error("Failed to fetch waitlist count:", error);
+    return 0;
+  }
+}