feat(landing): X pixel conversion tracking on landing pages

apps/sim/app/(landing)/layout.tsx

@@ -6,9 +6,18 @@ import { isHosted } from '@/lib/core/config/env-flags'
 import { SITE_URL } from '@/lib/core/utils/urls'
 import { LandingShell } from '@/app/(landing)/components'
 import { HubspotPageViewTracker } from '@/app/(landing)/hubspot-page-view-tracker'
+import { XPageViewTracker } from '@/app/(landing)/x-page-view-tracker'
 
 const HUBSPOT_SCRIPT_SRC = 'https://js-na2.hs-scripts.com/246720681.js' as const
 
+const X_PIXEL_ID = 'q5xbl' as const
+
+/** X (Twitter) conversion tracking base code — loads uwt.js and fires the initial PageView. */
+const X_PIXEL_BASE_CODE = `!function(e,t,n,s,u,a){e.twq||(s=e.twq=function(){s.exe?s.exe.apply(s,arguments):s.queue.push(arguments);
+},s.version='1.1',s.queue=[],u=t.createElement(n),u.async=!0,u.src='https://static.ads-twitter.com/uwt.js',
+a=t.getElementsByTagName(n)[0],a.parentNode.insertBefore(u,a))}(window,document,'script');
+twq('config','${X_PIXEL_ID}');`
+
 /**
  * Route-group layout for the entire landing family - the home page, platform and
  * solutions pages, pricing, legal, and the marketing subroutes (blog, models,
@@ -33,12 +42,16 @@ export default function LandingLayout({ children }: { children: ReactNode }) {
   return (
     <LandingShell>
       {children}
-      {/* HubSpot tracking — hosted only */}
+      {/* HubSpot + X pixel tracking — hosted only */}
       {isHosted && (
         <>
           <Script id='hs-script-loader' src={HUBSPOT_SCRIPT_SRC} strategy='afterInteractive' />
+          <Script id='x-pixel-base' strategy='afterInteractive'>
+            {X_PIXEL_BASE_CODE}
+          </Script>
           <Suspense fallback={null}>
             <HubspotPageViewTracker />
+            <XPageViewTracker />
           </Suspense>
         </>
       )}

apps/sim/app/(landing)/x-page-view-tracker.tsx

@@ -0,0 +1,46 @@
+'use client'
+
+import { useEffect, useRef } from 'react'
+import { usePathname, useSearchParams } from 'next/navigation'
+
+declare global {
+  interface Window {
+    twq?: (...args: unknown[]) => void
+  }
+}
+
+// next/script dedupes by id and never reloads on remount, so this must be
+// module-scope (not a ref) to survive LandingLayout unmounting/remounting.
+let hasTrackedInitialPageView = false
+
+/**
+ * The X pixel base code only auto-tracks the first page load; LandingLayout
+ * persists across client-side navigations, so the pixel never sees the rest.
+ * Re-fires the pixel's PageView via `twq('config', ...)` on every navigation
+ * after the first.
+ */
+export function XPageViewTracker() {
+  const pathname = usePathname()
+  const searchParams = useSearchParams()
+  const query = searchParams.toString()
+
+  // Instance-scoped (not module-scoped) so a Strict Mode replay of this
+  // mount's effect is skipped, while a fresh mount — returning to the landing
+  // layout from the app — starts empty and tracks the view again.
+  const lastTrackedUrlRef = useRef<string | null>(null)
+
+  useEffect(() => {
+    const url = query ? `${pathname}?${query}` : pathname
+    if (lastTrackedUrlRef.current === url) return
+    lastTrackedUrlRef.current = url
+
+    if (!hasTrackedInitialPageView) {
+      hasTrackedInitialPageView = true
+      return
+    }
+
+    window.twq?.('config', 'q5xbl')
+  }, [pathname, query])
+
+  return null
+}