feat: board-first orchestration with Gateway Bridge, live-update, and flow-board

- GatewayBridgeController: MCP-artiger Kommando-Adapter für Agent-zu-Backend
- TaskBridgeService + LiveUpdateService: SSE Live-Sync + Bridge-Kommandos
- FlowBoard.vue: Board-first orchestration dashboard panel
- live-sync.ts store + live.ts service: SSE-basierte Live-Updates
- Nullability-Warnung in HealthController.cs gefixt
- nginx.conf: SSE-Proxy + CORS für Bridge-Endpunkte
- .gitignore: pnpm/corepack local caches ausgeschlossen
- docs: architecture-board-first-orchestration.md hinzugefügt
- README: Backend Bridge API dokumentiert

frontend/src/views/Dashboard/FlowBoard.vue

@@ -12,11 +12,13 @@
  *
  * Polling startet bei Mount, stoppt bei Unmount.
  */
-import { onMounted, onUnmounted } from 'vue'
+import { computed, onMounted, onUnmounted } from 'vue'
+import { useRouter } from 'vue-router'
 import { useAgentStore } from '../../stores/agents'
 import { useChatStore } from '../../stores/chat'
 import { useDashboardStore } from '../../stores/dashboard'
 import { useTaskStore } from '../../stores/tasks'
+import { useLiveSyncStore } from '../../stores/live-sync'
 import AlertBar from '../../components/dashboard/v2/AlertBar.vue'
 import FlowCanvas from '../../components/dashboard/v2/FlowCanvas.vue'
 import IrisChat from '../../components/dashboard/v2/IrisChat.vue'
@@ -29,6 +31,8 @@ const agentStore = useAgentStore()
 const chatStore = useChatStore()
 const dashboardStore = useDashboardStore()
 const taskStore = useTaskStore()
+const liveSyncStore = useLiveSyncStore()
+const router = useRouter()
 
 const {
   addAgent,
@@ -42,18 +46,21 @@ const {
   updatePositions,
 } = useFlowBoardState(agentStore, chatStore)
 
+const blockedTasks = computed(() => taskStore.taskList.filter(task => task.status === 'blocked'))
+
 function handleBlockerClick() {
-  console.log('[FlowBoard] blocker clicked')
+  if (!blockedTasks.value.length) return
+  router.push('/tasks')
 }
 
 function blockerLabel() {
-  const blockedTask = taskStore.taskList.find(task => task.status === 'blocked')
+  const blockedTask = blockedTasks.value[0]
   if (!blockedTask) return undefined
-  return `${taskStore.taskList.filter(task => task.status === 'blocked').length} Blocker — ${blockedTask.title}`
+  return `${blockedTasks.value.length} Blocker — ${blockedTask.title}`
 }
 
 function blockerCount() {
-  return taskStore.taskList.filter(task => task.status === 'blocked').length
+  return blockedTasks.value.length
 }
 
 /* ── Lifecycle ────────────────────────────────────── */
@@ -62,6 +69,8 @@ onMounted(() => {
   chatStore.startPolling()
   dashboardStore.startPolling()
   taskStore.startPolling()
+  taskStore.startBoardPolling()
+  liveSyncStore.connect()
 })
 
 onUnmounted(() => {
@@ -69,6 +78,8 @@ onUnmounted(() => {
   chatStore.stopPolling()
   dashboardStore.stopPolling()
   taskStore.stopPolling()
+  taskStore.stopBoardPolling()
+  liveSyncStore.disconnect()
 })
 </script>