feat: enhance platform context with recent project tracking and access recording

frontend/src/app/platform/PlatformPage.tsx

@@ -10,7 +10,7 @@ import { AppSidebar } from './AppSidebar'
 
 function PlatformLayoutInner() {
   const { projectId } = useParams<{ projectId: string }>()
-  const { projects } = usePlatform()
+  const { recordProjectAccess } = usePlatform()
   const [sidebarOpen, setSidebarOpen] = useState(true)
 
   useEffect(() => {
@@ -18,6 +18,10 @@ function PlatformLayoutInner() {
     else setSidebarOpen(true)
   }, [projectId])
 
+  useEffect(() => {
+    if (projectId) recordProjectAccess(projectId)
+  }, [projectId, recordProjectAccess])
+
   return (
     <SidebarProvider open={sidebarOpen} onOpenChange={setSidebarOpen}>
       <AppSidebar />