feat: consolidate routing view into models tab, and add updates widget directly to Zentrale dashboard

frontend/src/nav.ts

@@ -1,7 +1,6 @@
 import {
   LayoutDashboard,
   Boxes,
-  Route,
   Cpu,
   Brain,
   Plug,
@@ -9,7 +8,7 @@ import {
   type LucideIcon,
 } from "lucide-react"
 
-export type ViewId = "dashboard" | "models" | "routing" | "system" | "memory" | "connect" | "agent"
+export type ViewId = "dashboard" | "models" | "system" | "memory" | "connect" | "agent"
 
 export interface NavItem {
   id: ViewId
@@ -21,10 +20,10 @@ export interface NavItem {
 // Eine Quelle der Wahrheit für Sidebar UND Command-Palette.
 export const NAV: NavItem[] = [
   { id: "dashboard", label: "Zentrale", hint: "System- & Stack-Status", icon: LayoutDashboard },
-  { id: "models", label: "Modelle & Routing", hint: "Modelle kuratieren, Gruppen & Auto-Routing", icon: Boxes },
-  { id: "routing", label: "Routing", hint: "Gateway-Regeln: schnell ↔ schwer", icon: Route },
+  { id: "models", label: "Modell-Zentrale", hint: "Verwalten, laden & Gateway-Routing", icon: Boxes },
   { id: "system", label: "Diagnose", hint: "Metriken, Dienste, Logs", icon: Cpu },
   { id: "memory", label: "Gedächtnis", hint: "Geteiltes Memory verwalten", icon: Brain },
   { id: "connect", label: "Verbinden", hint: "IDE-/Agent-Configs erzeugen", icon: Plug },
   { id: "agent", label: "Hermes", hint: "Agent-Status & WebUI öffnen", icon: Bot },
 ]
+