feat: Dashboard Frontend – Echte API-Integration

- useDashboardData: Mock-Daten durch API-Calls ersetzt
- fetchStatus/Agents/Operations/ChatMessages/Queue via /api/dashboard/*
- sendChatMessage via POST /api/dashboard/chat/send
- Polling: Status 5s, Chat 3s, Agents/Queue 10s
- Agent Catalog mit static Fields + API-Daten
- ChatPanel direkt mit sendChatMessage verdrahtet
- Build: 0 errors, vue-tsc + vite ✅

frontend/src/components/dashboard/ChatPanel.vue

@@ -2,6 +2,7 @@
 import { ref, nextTick, watch } from 'vue'
 import { Bot, Send, LoaderCircle, Maximize2, X } from '@lucide/vue'
 import type { ChatMessage } from '../../composables/useDashboardData'
+import { useDashboardData } from '../../composables/useDashboardData'
 
 const props = defineProps<{
   messages: ChatMessage[]
@@ -9,9 +10,7 @@ const props = defineProps<{
   irisFocus: string
 }>()
 
-const emit = defineEmits<{
-  send: [text: string]
-}>()
+const { sendChatMessage } = useDashboardData()
 
 const inputText = ref('')
 const chatListRef = ref<HTMLElement | null>(null)
@@ -20,7 +19,7 @@ const chatModalOpen = ref(false)
 
 function sendMessage(): void {
   if (!inputText.value.trim()) return
-  emit('send', inputText.value)
+  sendChatMessage(inputText.value)
   inputText.value = ''
 }