Improve mobile layouts and restore Cloudflare provider (#840)

Co-authored-by: Delynn Assistant <zhen@dkzhen.org>

src/shared/components/Sidebar.js

@@ -22,7 +22,6 @@ const navItems = [
   // { href: "/dashboard/basic-chat", label: "Basic Chat", icon: "chat" }, // Hidden
   { href: "/dashboard/combos", label: "Combos", icon: "layers" },
   { href: "/dashboard/usage", label: "Usage", icon: "bar_chart" },
-  { href: "/dashboard/auth-files", label: "Auth Files", icon: "vpn_key" },
   { href: "/dashboard/quota", label: "Quota Tracker", icon: "data_usage" },
   { href: "/dashboard/mitm", label: "MITM", icon: "security" },
   { href: "/dashboard/cli-tools", label: "CLI Tools", icon: "terminal" },