refactor(onboarding-tour, layout, sidebar): reduce thread fetch limit to 6 for improved performance

- Updated thread fetching logic across multiple components to limit the number of threads fetched to 6 instead of 40.
- Adjusted related placeholder data and chat display logic in the sidebar to reflect the new limit.

surfsense_web/components/layout/providers/LayoutDataProvider.tsx

@@ -118,10 +118,10 @@ export function LayoutDataProvider({ workspaceId, children }: LayoutDataProvider
 		enabled: !!workspaceId,
 	});
 
-	// Fetch threads (40 total to allow up to 20 per section - shared/private)
+	// Fetch recent threads for the sidebar.
 	const { data: threadsData, isPending: isLoadingThreads } = useQuery({
-		queryKey: ["threads", workspaceId, { limit: 40 }],
-		queryFn: () => fetchThreads(Number(workspaceId), 40),
+		queryKey: ["threads", workspaceId, { limit: 6 }],
+		queryFn: () => fetchThreads(Number(workspaceId), 6),
 		enabled: !!workspaceId,
 	});
 

surfsense_web/components/layout/ui/sidebar/AllChatsSidebar.tsx

@@ -99,7 +99,7 @@ function AllChatsContent({ workspaceId, className }: AllChatsContentProps) {
 		queryKey: ["all-threads", workspaceId],
 		queryFn: () => fetchThreads(Number(workspaceId)),
 		enabled: !!workspaceId && !isSearchMode,
-		placeholderData: () => queryClient.getQueryData(["threads", workspaceId, { limit: 40 }]),
+		placeholderData: () => queryClient.getQueryData(["threads", workspaceId, { limit: 6 }]),
 	});
 
 	const {

surfsense_web/components/layout/ui/sidebar/Sidebar.tsx

@@ -311,7 +311,7 @@ export function Sidebar({
 							) : chats.length > 0 ? (
 								<div className="relative">
 									<div className={`flex flex-col gap-0.5 ${chats.length > 4 ? "pb-2" : ""}`}>
-										{chats.slice(0, 20).map((chat) => (
+										{chats.slice(0, 6).map((chat) => (
 											<ChatListItem
 												key={chat.id}
 												name={chat.name}

surfsense_web/components/onboarding-tour.tsx

@@ -395,8 +395,8 @@ export function OnboardingTour() {
 
 	// Fetch threads data
 	const { data: threadsData } = useQuery({
-		queryKey: ["threads", workspaceId, { limit: 40 }], // Same key as layout
-		queryFn: () => fetchThreads(Number(workspaceId), 40),
+		queryKey: ["threads", workspaceId, { limit: 6 }], // Same key as layout
+		queryFn: () => fetchThreads(Number(workspaceId), 6),
 		enabled: !!workspaceId,
 	});