refactor: rename OTA Manager to Pipely in UI, simplify logout

- Change login page title from "OTA Manager" to "Pipely"
- Remove setToken call from Layout logout handler

web/src/components/Layout.tsx

@@ -1,5 +1,4 @@
 import { NavLink, useNavigate, Outlet } from "react-router-dom"
-import { setToken } from "@/shared/web-client"
 import {
   Drawer,
   List,
@@ -27,7 +26,6 @@ export default function Layout() {
   const navigate = useNavigate()
 
   function handleLogout() {
-    setToken(null)
     navigate("/")
   }