feat: add beta notice on pricing

apps/web/src/views/home/components/Pricing.tsx

@@ -95,6 +95,12 @@ const Pricing = () => {
           Get started for free, with no usage limits. For collaboration, upgrade
           to a plan that fits the size of your team.
         </p>
+
+        {/* Beta free pricing pill */}
+        <div className="mt-4 flex items-center gap-2 rounded-full bg-green-100 px-3 py-1 text-xs font-semibold text-green-800 dark:bg-green-700 dark:text-green-100">
+          All seats are free during the beta until Sept 1st!
+        </div>
+
         <div className="mt-16 flex justify-center">
           <fieldset aria-label="Payment frequency">
             <RadioGroup