Fix: Plan-Eingang crashte wegen fehlender Context-Handler.

handleUpdateBacklog und handleReorderBacklog waren in InitiativeInboxPage nicht destructured — ReferenceError, leerer Screen.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/pages/initiative/InitiativeInboxPage.jsx

@@ -1,5 +1,6 @@
 import { useInitiativeOperations } from '../../context/InitiativeOperationsContext.jsx'
 import { BacklogSection } from '../../components/BacklogSection.jsx'
+import { LoadingState } from '../../components/LoadingState.jsx'
 
 export function InitiativeInboxPage() {
   const {
@@ -8,9 +9,10 @@ export function InitiativeInboxPage() {
     capabilities,
     formBusy,
     error,
+    loading,
     handleCreateBacklog,
-    handleBacklogGate,
+    handleUpdateBacklog,
-    handleBacklogStatus,
+    handleReorderBacklog,
     handleConvertBacklog,
     handleDeleteBacklog,
   } = useInitiativeOperations()
@@ -19,6 +21,10 @@ export function InitiativeInboxPage() {
     return null
   }
 
+  if (loading) {
+    return <LoadingState message="Lade Eingang …" />
+  }
+
   return (
     <>
       {error && <p className="error">{error}</p>}