docs: expose map performance notes

src/router.tsx

@@ -17,6 +17,7 @@ import {
   DocsInteractionRoute,
   DocsLayoutRoute,
   DocsMainFeatureRoute,
+  DocsMapPerformanceRoute,
   DocsMissionFlowRoute,
   DocsReadmeRoute,
   DocsRepairGameRoute,
@@ -62,6 +63,7 @@ const docsChildRoutes = [
   { path: "hand-tracking", component: DocsHandTrackingRoute },
   { path: "zustand", component: DocsZustandRoute },
   { path: "three-debugging", component: DocsThreeDebuggingRoute },
+  { path: "map-performance", component: DocsMapPerformanceRoute },
   { path: "features", component: DocsFeaturesRoute },
   { path: "main-feature", component: DocsMainFeatureRoute },
   { path: "editor", component: DocsEditorRoute },