feat(v2): live sidebar counts, /dashboard = V2 default route, remove V1 dead code

frontend/src/components/layout/Sidebar.vue

@@ -2,11 +2,16 @@
 import { computed } from 'vue'
 import { useRouter } from 'vue-router'
 import { useAuthStore } from '../../stores/auth'
+import { useAgentStore } from '../../stores/agents'
+import { useTaskStore } from '../../stores/tasks'
 import { navigation, icons } from '../../composables/icons'
+import type { NavGroupDef } from '../../composables/icons'
 import NavGroup from './NavGroup.vue'
 
 const auth = useAuthStore()
 const router = useRouter()
+const agentStore = useAgentStore()
+const taskStore = useTaskStore()
 
 const ownerInitials = computed(() =>
   auth.user?.displayName?.split(' ').map(p => p[0]).join('').slice(0, 2).toUpperCase()
@@ -17,6 +22,44 @@ function logout() {
   auth.logout()
   router.replace('/login')
 }
+
+/**
+ * Dynamische Nav-Item-Counts aus den Stores.
+ * Überschreibt die hartcodierten `count`-Werte im navigation-Array.
+ */
+const dynamicNavigation = computed<NavGroupDef[]>(() => {
+  // Deep-clone: Jede Gruppe und jedes Item neu erstellen
+  return navigation.map(group => ({
+    ...group,
+    items: group.items.map(item => {
+      let dynamicCount: string | undefined
+
+      switch (item.label) {
+        case 'Agenten':
+        case 'Hosts · OpenClaw':
+          dynamicCount = String(agentStore.agentList.length)
+          break
+        case 'Task Board':
+          dynamicCount = String(taskStore.taskList.length)
+          break
+        case 'Kosten & Tokens':
+          dynamicCount = agentStore.todayCost
+          break
+        case 'Docs & .md':
+          dynamicCount = '0'
+          break
+        case 'Incidents':
+          dynamicCount = '0'
+          break
+      }
+
+      return {
+        ...item,
+        count: dynamicCount ?? item.count,
+      }
+    }),
+  }))
+})
 </script>
 
 <template>
@@ -33,7 +76,7 @@ function logout() {
     <!-- Navigation -->
     <nav class="nav">
       <NavGroup
-        v-for="(group, idx) in navigation"
+        v-for="(group, idx) in dynamicNavigation"
         :key="idx"
         :label="group.group"
         :items="group.items"