Merge remote-tracking branch 'origin/main' into peter/rnd-13071-search-space-scope

.changeset/insights-canonical-url.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Track server-side Insights events (markdown, llms.txt, RSS, ask) with the site's public URL instead of the proxy URL.

.changeset/openapi-nullable-recursion.md

@@ -0,0 +1,6 @@
+---
+"@gitbook/react-openapi": patch
+"gitbook": patch
+---
+
+Fix OpenAPI schemas that reference themselves through a nullable union rendering forever when expanded, which crashed PDF exports.

.changeset/preview-cookie-path-scope.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix previewed customization and theme overrides being lost when navigating between pages inside the site preview. The preview cookie was scoped to the site's canonical base path instead of the preview route it is actually served under, so the browser dropped it on the next in-preview navigation.