fix(01): remove traefik, lighten dark mode, fix sidebar accent color, move locale switcher to sidebar footer

apps/web/src/components/layout/sidebar-footer.tsx

@@ -2,6 +2,7 @@
 
 import { useTranslations } from 'next-intl';
 import { useSidebarStore } from '@/lib/stores/sidebar-store';
+import { LocaleSwitcher } from '@/components/locale-switcher';
 
 export function SidebarFooter() {
   const t = useTranslations('sidebar');
@@ -9,6 +10,13 @@ export function SidebarFooter() {
 
   return (
     <div className="border-t border-sidebar-border p-3 flex flex-col gap-2">
+      {/* Locale switcher */}
+      {!isCollapsed && (
+        <div className="px-2 py-1">
+          <LocaleSwitcher />
+        </div>
+      )}
+
       {/* Settings */}
       <button className="flex items-center gap-3 rounded-md px-2 py-1.5 text-sm text-sidebar-foreground hover:bg-muted transition-colors">
         <svg