feat: refactor sidebar and settings to include agents and models; update routing and i18n messages

src/components/layout/Sidebar.tsx

@@ -1,5 +1,5 @@
 import { useLocation, useNavigate } from 'react-router-dom';
-import { Book, Bot, Clock, Code, Cpu, House, Network, Puzzle, Settings } from 'lucide-react';
+import { Book, Clock, Code, House, Network, Puzzle, Settings } from 'lucide-react';
 import { useI18n } from '../../i18n';
 import { NAV_ITEMS, normalizeWorkspacePath } from '../../router/routes';
 
@@ -9,8 +9,6 @@ const MENU_MARKS: Record<string, typeof House> = {
   '/home': House,
   '/knowledge': Book,
   '/channels': Network,
-  '/agents': Bot,
-  '/models': Cpu,
   '/skills': Puzzle,
   '/cron': Clock,
   // '/scripts': Code,