Fix intermittent thread messages not loading on prod

- Change refetchOnMount from false to 'always' to ensure fresh data
- Reduce staleTime from 5 minutes to 30 seconds
- Reduce gcTime from 30 minutes to 10 minutes

This fixes the issue where messages wouldn't load if initial fetch
failed or returned empty due to auth timing issues.

Author: iamjr15

frontend/src/app/(home)/projects/[projectId]/thread/_hooks/useThreadMessages.ts

@@ -88,6 +88,7 @@ export function useThreadMessages(
   }, [messagesQuery.data, queryIsError, queryIsLoading, threadId]);
 
   // Handle subsequent message updates (when not streaming)
+  // Also handles refetch after initial empty load
   useEffect(() => {
     if (messagesQuery.data && messagesQuery.status === 'success') {
       // Only update messages from server if we're not actively streaming/connecting

frontend/src/hooks/react-query/threads/use-messages.ts

@@ -19,10 +19,10 @@ export const useMessagesQuery = (threadId: string) => {
       retry: (failureCount) => {
         return failureCount < 2;
       },
-      staleTime: 5 * 60 * 1000, // 5 minutes - messages don't change unless user sends new ones
-      gcTime: 30 * 60 * 1000, // 30 minutes cache
+      staleTime: 30 * 1000, // 30 seconds - allow refetch if stale
+      gcTime: 10 * 60 * 1000, // 10 minutes cache
       refetchOnWindowFocus: false,
-      refetchOnMount: false, // Don't refetch if we have cached data
+      refetchOnMount: 'always', // Always refetch on mount to ensure fresh data
     }
   )();
 };