Add go page: Postgres Summit US 2026 contest (#49597)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Feature — new marketing landing page (`/go` page).

## What is the current behavior?

No landing page exists yet for Supabase's presence at Postgres Summit US
2026 (Sept 30 - Oct 2, 2026, NYC).

## What is the new behavior?

Adds a contest landing page and thank-you page, modeled on the existing
`pgconf-dev-2026/contest` go page pattern:

- `supabase.com/go/postgres-summit-2026/contest` — MacBook Neo giveaway
entry page, featuring the "Everything to know about Postgres Locks" talk
by Brian Brennglass (Supabase), Wed Sept 30, 4:00–4:50 PM EDT, Rossi
Intermediate room
- `supabase.com/go/postgres-summit-2026/contest/thank-you` —
confirmation page after entry
- Registered both in `apps/www/_go/index.tsx` with a `// remove after
October 31, 2026` cleanup marker, since this is a temporary event page
- HubSpot form wired to a real form GUID, with field mapping verified
against the form's actual internal property names (note: `company_name`
maps to `name` on the HubSpot **Company** object, not the usual
`company` Contact property — verified directly in the HubSpot form
editor rather than assumed)

Verified locally: both pages render correctly (hero, speaker section
with headshot, how-to-enter steps, form) via `pnpm --filter www dev`.

## Additional context

- Contest entry deadline is currently set to Monday, October 12, 2026,
12:00 PM PDT — a placeholder estimate (~12 days post-event, matching the
pattern used on other event contest pages), not sourced from an official
deadline. Flagging for review before this goes live.
- No talk-slides link exists yet for this session, so the "View session
details" CTA links to the official postgresql.us session page instead.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added a Postgres Summit US 2026 contest landing page featuring prize
information, event content, entry instructions, and a contest entry
form.
* Added a thank-you page with submission confirmation, contest details,
onboarding guidance, and links to the dashboard and website.
* Added registration for both pages with availability through October
31, 2026.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Wendie Cheung <wendie.cheung@supabase.io>

apps/www/_go/events/postgres-summit-2026/contest-thank-you.tsx

@@ -0,0 +1,36 @@
+import type { GoPageInput } from 'marketing'
+import Link from 'next/link'
+import { Button } from 'ui'
+
+const page: GoPageInput = {
+  template: 'thank-you',
+  slug: 'postgres-summit-2026/contest/thank-you',
+  metadata: {
+    title: "You're entered | Supabase at Postgres Summit US 2026",
+    description: 'Thanks for entering the Supabase contest at Postgres Summit US 2026. Good luck!',
+  },
+  hero: {
+    title: 'Thanks for entering',
+    description:
+      "Your contest entry is confirmed. Make sure you've created a Supabase account and loaded data before the contest deadline. We'll reach out to the winner by email.",
+  },
+  sections: [
+    {
+      type: 'single-column',
+      title: 'Get started with Supabase',
+      description: "If you haven't already, create your account and start building.",
+      children: (
+        <div className="flex flex-col sm:flex-row items-center justify-center gap-4">
+          <Button asChild variant="default" size="small">
+            <Link href="https://supabase.com/dashboard">Go to dashboard</Link>
+          </Button>
+          <Button asChild variant="outline" size="small">
+            <Link href="https://supabase.com">Visit supabase.com</Link>
+          </Button>
+        </div>
+      ),
+    },
+  ],
+}
+
+export default page

apps/www/_go/events/postgres-summit-2026/contest.tsx

@@ -0,0 +1,160 @@
+import type { GoPageInput } from 'marketing'
+import Image from 'next/image'
+import Link from 'next/link'
+import { Button } from 'ui'
+
+const page: GoPageInput = {
+  template: 'lead-gen',
+  slug: 'postgres-summit-2026/contest',
+  metadata: {
+    title: 'Win a MacBook Neo | Supabase at Postgres Summit US 2026',
+    description:
+      'Thanks for connecting with us at Postgres Summit US 2026. Try Supabase — Postgres with everything you need. Enter for a chance to win a MacBook Neo.',
+  },
+  hero: {
+    title: 'Win a MacBook Neo',
+    subtitle: 'Supabase at Postgres Summit US 2026',
+    description:
+      'Thanks for connecting with us at Postgres Summit US 2026. Try Supabase — Postgres with everything you need. Enter for a chance to win a MacBook Neo.',
+    image: {
+      src: '/images/landing-pages/sxsw-2026/macbook-neo.png',
+      alt: 'MacBook Neo in four colors',
+      width: 500,
+      height: 333,
+    },
+    ctas: [
+      {
+        label: 'Get started',
+        href: '#how-to-enter',
+        variant: 'primary',
+      },
+    ],
+  },
+  sections: [
+    {
+      type: 'single-column',
+      title: 'Everything to know about Postgres Locks',
+      description: 'Conference Talk: Wednesday, September 30, 2026 4:00 PM EDT, Rossi Intermediate',
+      children: (
+        <div className="flex flex-col items-center gap-6">
+          <Image
+            src="/images/landing-pages/postgres-summit-NYC-2026/brian-brennglass.png"
+            alt="Brian Brennglass"
+            width={192}
+            height={192}
+            className="rounded-full object-cover aspect-square w-48 h-48"
+          />
+          <div className="flex flex-col items-center gap-0">
+            <p className="text-foreground-light font-medium">Brian Brennglass</p>
+            <p className="text-foreground-lighter text-sm">Supabase</p>
+          </div>
+          <Button asChild variant="default" size="medium">
+            <Link
+              href="https://postgresql.us/events/postgressummitus2026/schedule/session/2406-everything-to-know-about-postgres-locks/"
+              target="_blank"
+              rel="noopener noreferrer"
+            >
+              View session details
+            </Link>
+          </Button>
+        </div>
+      ),
+    },
+    {
+      type: 'single-column',
+      id: 'how-to-enter',
+      title: 'How to enter',
+      children: (
+        <div className="flex flex-col items-center gap-6">
+          <ol className="flex flex-col gap-4 text-foreground-light text-lg list-decimal list-inside">
+            <li>Create a Supabase account and note the email address you used</li>
+            <li>Load data into a Supabase database</li>
+            <li>Fill out the entry form below</li>
+            <li>
+              Complete these steps by the contest deadline, Monday October 12, 2026 at 12:00 PM PDT
+            </li>
+          </ol>
+          <Button asChild variant="default" size="medium">
+            <Link href="https://supabase.com/dashboard">Create your account</Link>
+          </Button>
+          <p className="text-xs text-foreground-lighter mt-4">
+            No purchase necessary. Void where prohibited.{' '}
+            <Link href="/go/contest-rules" className="underline">
+              Official rules
+            </Link>
+            .
+          </p>
+        </div>
+      ),
+    },
+    {
+      type: 'form',
+      id: 'enter-contest',
+      title: 'Enter the contest',
+      description: 'Fill out the form below to complete your entry.',
+      fields: [
+        {
+          type: 'text',
+          name: 'first_name',
+          label: 'First Name',
+          placeholder: 'First Name',
+          required: true,
+          half: true,
+        },
+        {
+          type: 'text',
+          name: 'last_name',
+          label: 'Last Name',
+          placeholder: 'Last Name',
+          required: true,
+          half: true,
+        },
+        {
+          type: 'email',
+          name: 'email_address',
+          label: 'Email',
+          placeholder: 'Email address',
+          required: true,
+        },
+        {
+          type: 'text',
+          name: 'company_name',
+          label: 'Company',
+          placeholder: 'Company name',
+          required: true,
+        },
+      ],
+      submitLabel: 'Enter contest',
+      successRedirect: '/go/postgres-summit-2026/contest/thank-you',
+      disclaimer:
+        'By submitting this form, I confirm that I have read and understood the [Privacy Policy](https://supabase.com/privacy) and the [Official Rules](/go/contest-rules).',
+      crm: {
+        hubspot: {
+          formGuid: '32a0223e-784e-43bb-bdba-5cb3e72f35bd',
+          fieldMap: {
+            first_name: 'firstname',
+            last_name: 'lastname',
+            email_address: 'email',
+            company_name: 'name',
+          },
+          consent:
+            'By submitting this form, I confirm that I have read and understood the Privacy Policy.',
+        },
+        customerio: {
+          event: 'event_attended',
+          profileMap: {
+            email_address: 'email',
+            first_name: 'first_name',
+            last_name: 'last_name',
+            company_name: 'company_name',
+          },
+          staticProperties: {
+            event_name: 'Postgres Summit US 2026',
+          },
+        },
+      },
+    },
+  ],
+}
+
+export default page

apps/www/_go/index.tsx

@@ -8,6 +8,8 @@ import datadogDinner from './events/dash-2026/exec-dinner'
 import datadogContestThankYou from './events/dash-2026/exec-dinner-thank-you'
 import pgconfDev2026Contest from './events/pgconf-dev-2026/contest'
 import pgconfDev2026ContestThankYou from './events/pgconf-dev-2026/contest-thank-you'
+import postgresSummit2026Contest from './events/postgres-summit-2026/contest'
+import postgresSummit2026ContestThankYou from './events/postgres-summit-2026/contest-thank-you'
 import postgresconfContest from './events/postgresconf-sjc-2026/contest'
 import postgresconfContestThankYou from './events/postgresconf-sjc-2026/contest-thank-you'
 import selectPartnerDay from './events/select-2026/partner-day'
@@ -53,6 +55,8 @@ const pages: GoPageInput[] = [
   postgresconfContestThankYou, // remove after May 31, 2026
   pgconfDev2026Contest, // remove after May 31, 2026
   pgconfDev2026ContestThankYou, // remove after May 31, 2026
+  postgresSummit2026Contest, // remove after October 31, 2026
+  postgresSummit2026ContestThankYou, // remove after October 31, 2026
   datadogContest, // remove after June 30, 2026
   datadogContestThankYou, // remove after June 30, 2026
   datadogDinner, // remove after June 30, 2026