feat: position Routes and Starred sections at bottom of sidebar

src/layout/LayoutShell.tsx

@@ -381,6 +381,7 @@ export function LayoutShell() {
             open={!routesCollapsed}
             onToggle={toggleRoutesCollapsed}
             active={location.pathname.startsWith('/routes')}
+            position="bottom"
           >
             <SidebarTree
               nodes={routeNodes}
@@ -400,6 +401,7 @@ export function LayoutShell() {
               open={true}
               onToggle={() => {}}
               active={false}
+              position="bottom"
             >
               <StarredGroup
                 label="Applications"