Preserve sidebar scroll position across page navigations

- Add ID to sidebar nav element for JavaScript targeting
- Save sidebar scroll position to sessionStorage on link click
- Restore sidebar scroll position on page load
- Prevents selected menu items from scrolling out of view on navigation

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: groksrc

src/components/Sidebar.astro

@@ -6,7 +6,7 @@ const currentPath = Astro.url.pathname
 ---
 
 <aside class="hidden md:block w-72 flex-shrink-0 bg-background">
-  <nav class="sticky top-16 h-[calc(100vh-4rem)] overflow-y-auto py-6 pr-6 pl-8">
+  <nav id="sidebar-nav" class="sticky top-16 h-[calc(100vh-4rem)] overflow-y-auto py-6 pr-6 pl-8">
     <div class="space-y-6">
       <!-- Top links section -->
       <div class="space-y-2">

src/layouts/Layout.astro

@@ -26,6 +26,23 @@ const { title = 'Basic Memory', description = 'Basic Memory - Persistent memory
     <slot />
 
     <script>
+      // Preserve sidebar scroll position
+      document.addEventListener('click', (e) => {
+        const sidebar = document.getElementById('sidebar-nav');
+        if (sidebar && e.target.closest('a')) {
+          sessionStorage.setItem('sidebarScrollPos', sidebar.scrollTop);
+        }
+      });
+
+      // Restore scroll position after navigation
+      document.addEventListener('DOMContentLoaded', () => {
+        const sidebar = document.getElementById('sidebar-nav');
+        const scrollPos = sessionStorage.getItem('sidebarScrollPos');
+        if (sidebar && scrollPos) {
+          sidebar.scrollTop = parseInt(scrollPos);
+        }
+      });
+
       // Handle accordion interactions
       document.addEventListener('DOMContentLoaded', () => {
         document.addEventListener('click', (e) => {