feat(analytics): add Plausible alongside GA4

.prettierignore

@@ -8,3 +8,4 @@ layouts/case-studies/immersive.html
 layouts/case-studies/single.html
 layouts/case-studies/_markup/render-link.html
 layouts/partials/case-study-entry.html
+layouts/partials/plausible.html

layouts/partials/head.html

@@ -159,6 +159,8 @@
       src="//static.klaviyo.com/onsite/js/klaviyo.js?company_id=TTc7Za"
     ></script> -->
 
+    {{ partial "plausible.html" . }}
+
     <!-- Google tag (gtag.js) -->
     <script
       type="text/plain"

layouts/partials/plausible.html

@@ -0,0 +1,27 @@
+{{/*
+  Plausible Analytics.
+
+  Deliberately NOT consent-gated. Unlike the GA4/GTM blocks in head.html,
+  Plausible is cookieless and stores no personal data, so it does not require
+  consent. Adding type="text/plain" + data-category="analytics" here would make
+  it inherit the CookieConsent gate and defeat the reason we added it: seeing
+  the traffic GA4 never sees.
+
+  Served through the first-party proxy defined in netlify.toml so ad blockers
+  don't strip it. The paths below MUST stay in sync with those redirect rules.
+
+  Scroll depth and time-on-page are tracked automatically, no config needed.
+*/}}
+{{ if eq (os.Getenv "HUGO_ENV") "production" }}
+<!-- Privacy-friendly analytics by Plausible -->
+<script async src="/mpx/js/script.js"></script>
+<script>
+  window.plausible=window.plausible||function(){(plausible.q=plausible.q||[]).push(arguments)},plausible.init=plausible.init||function(i){plausible.o=i||{}};
+  plausible.init({
+    endpoint: "/mpx/api/event",
+    outboundLinks: true,
+    fileDownloads: true,
+    formSubmissions: true
+  })
+</script>
+{{ end }}

netlify.toml

@@ -60,6 +60,23 @@ status = 301
 force = true
 ########################################################
 
+########################################################
+# Plausible Analytics proxy. Serves the tracker first-party so ad blockers
+# don't strip it. These MUST stay above the catch-all 404 below, and the paths
+# MUST match the script src + endpoint in layouts/partials/plausible.html
+[[redirects]]
+from = "/mpx/js/script.js"
+to = "https://plausible.io/js/pa-J584RNJ6fxr4nE6Fry8ys.js"
+status = 200
+force = true
+
+[[redirects]]
+from = "/mpx/api/event"
+to = "https://plausible.io/api/event"
+status = 200
+force = true
+########################################################
+
 [[redirects]]
 from = "/*"
 to = "/404.html"