fix(api): add 404 guard when logo confirm returns no rows

The returning() on the update query can produce undefined when zero
rows match. Added explicit 404 if updated is falsy.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/routes/settings.ts

@@ -132,6 +132,10 @@ settingsRouter.post(
       .where(eq(businessSettings.id, settingsId))
       .returning();
 
+    if (!updated) {
+      return c.json({ error: "Settings not found" }, 404);
+    }
+
     return c.json({ ok: true, logoKey: updated.logoKey });
   }
 );