courrier correct panel 2 scroll up

app/courrier/page.tsx

@@ -280,6 +280,10 @@ export default function CourrierPage() {
   
   // Handle mailbox change with prefetching
   const handleMailboxChange = (folder: string) => {
+    // Reset to page 1 when changing folders
+    setPage(1);
+    
+    // Change folder in the state
     changeFolder(folder);
     setCurrentView(folder);
     

components/email/EmailList.tsx

@@ -44,8 +44,28 @@ export default function EmailList({
   const [scrollPosition, setScrollPosition] = useState(0);
   const [searchQuery, setSearchQuery] = useState('');
   const scrollRef = React.useRef<HTMLDivElement>(null);
+  const [emailsLength, setEmailsLength] = useState(emails.length);
+  const [isScrollingToTop, setIsScrollingToTop] = useState(false);
 
-  // Handle scroll to detect when user reaches the bottom
+  // Track changes in emails array to manage scrolling
+  React.useEffect(() => {
+    // If email count increased, we loaded more emails
+    if (emails.length > emailsLength) {
+      // If not loading more at the bottom, let's maintain scroll position
+      if (!isLoading && scrollRef.current && !isScrollingToTop) {
+        // This ensures the visible emails stay the same after loading more
+        setTimeout(() => {
+          if (scrollRef.current) {
+            scrollRef.current.scrollTop = scrollPosition;
+          }
+        }, 50);
+      }
+    }
+    // Update the emails length tracker
+    setEmailsLength(emails.length);
+  }, [emails, emailsLength, isLoading, scrollPosition]);
+
+  // Handle scroll to detect when user reaches the bottom or scrolls up
   const handleScroll = (event: React.UIEvent<HTMLDivElement>) => {
     const target = event.target as HTMLDivElement;
     const { scrollTop, scrollHeight, clientHeight } = target;
@@ -53,6 +73,9 @@ export default function EmailList({
     // Save scroll position for restoration when needed
     setScrollPosition(scrollTop);
     
+    // Detect scrolling direction
+    setIsScrollingToTop(scrollTop < scrollPosition);
+    
     // If user scrolls near the bottom and we have more emails, load more
     if (scrollHeight - scrollTop - clientHeight < 200 && hasMoreEmails && !isLoading) {
       // Store current scroll data before loading more
@@ -64,6 +87,13 @@ export default function EmailList({
     }
   };
 
+  // Add a function to scroll to top
+  const scrollToTop = () => {
+    if (scrollRef.current) {
+      scrollRef.current.scrollTop = 0;
+    }
+  };
+
   // Update title to show date sort order
   React.useEffect(() => {
     // Add a small indicator in the header to show emails are sorted by date
@@ -165,8 +195,14 @@ export default function EmailList({
       >
         <div className="divide-y divide-gray-100">
           {/* Add a small note to show emails are sorted by date */}
-          <div className="text-xs text-gray-400 py-1 px-2 bg-gray-50">
+          <div className="text-xs text-gray-400 py-1 px-2 bg-gray-50 flex justify-between">
-            Sorted by date (newest first)
+            <span>Sorted by date (newest first)</span>
+            <button 
+              onClick={scrollToTop} 
+              className="text-blue-500 hover:text-blue-700"
+            >
+              Back to top
+            </button>
           </div>
           
           {emails.map((email) => (