Revert "ui: move settings to footer icon beside theme toggle"

This reverts commit f3a9b6de21.

ui/src/components/Sidebar.tsx

@@ -8,6 +8,7 @@ import {
   Search,
   SquarePen,
   Network,
+  Settings,
 } from "lucide-react";
 import { useQuery } from "@tanstack/react-query";
 import { SidebarSection } from "./SidebarSection";
@@ -98,6 +99,7 @@ export function Sidebar() {
           <SidebarNavItem to="/org" label="Org" icon={Network} />
           <SidebarNavItem to="/costs" label="Costs" icon={DollarSign} />
           <SidebarNavItem to="/activity" label="Activity" icon={History} />
+          <SidebarNavItem to="/company/settings" label="Settings" icon={Settings} />
         </SidebarSection>
       </nav>
     </aside>