Keep note list mounted off-screen on mobile to perfectly preserve scroll position

src/components/EvercloneWorkspace.tsx

@@ -578,15 +578,16 @@ export default function EvercloneWorkspace() {
   useEffect(() => {
     if (mobilePane === 'list' && listParentRef.current) {
       const targetScroll = listScrollPosRef.current;
-      // Also ensure window itself is at top (prevent browser auto-scroll offset)
       if (typeof window !== 'undefined') {
         window.scrollTo(0, 0);
       }
-      requestAnimationFrame(() => {
+      // Use double rAF / timeout to ensure browser layout and virtualizer are completely settled
+      const timer = setTimeout(() => {
         if (listParentRef.current) {
           listParentRef.current.scrollTop = targetScroll;
         }
-      });
+      }, 30);
+      return () => clearTimeout(timer);
     }
   }, [mobilePane]);
 
@@ -1479,9 +1480,9 @@ export default function EvercloneWorkspace() {
         <>
           {/* 2. MIDDLE NOTE LIST PANE */}
       <section
-        className={`${
-          mobilePane === 'editor' ? 'hidden md:flex' : 'flex'
-        } w-full ${
+        className={`w-full ${
+          mobilePane === 'editor' ? 'max-md:invisible max-md:absolute max-md:-left-[9999px] max-md:pointer-events-none' : 'flex'
+        } ${
           listMode === 'cards'
             ? 'md:w-96 lg:w-[460px] xl:w-[500px]'
             : 'md:w-80 lg:w-96'