From 0e81eabda661fd44eb57f42a36eb12304c299f57 Mon Sep 17 00:00:00 2001
From: Matthias Hochmeister <matthias.hochmeister@apple.com>
Date: Sat, 28 Feb 2026 16:10:26 +0100
Subject: [PATCH] fix: add React Router v7 future flags and defensive null
 guard for wartungslog

---
 frontend/src/main.tsx                 | 2 +-
 frontend/src/pages/FahrzeugDetail.tsx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 545d5f4..b31294b 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -17,7 +17,7 @@ const queryClient = new QueryClient({
 
 ReactDOM.createRoot(document.getElementById('root')!).render(
   <React.StrictMode>
-    <BrowserRouter>
+    <BrowserRouter future={{ v7_startTransition: true, v7_relativeSplatPath: true }}>
       <ThemeProvider theme={lightTheme}>
         <CssBaseline />
         <QueryClientProvider client={queryClient}>
diff --git a/frontend/src/pages/FahrzeugDetail.tsx b/frontend/src/pages/FahrzeugDetail.tsx
index 9a1b44d..93ee8cc 100644
--- a/frontend/src/pages/FahrzeugDetail.tsx
+++ b/frontend/src/pages/FahrzeugDetail.tsx
@@ -628,7 +628,7 @@ function FahrzeugDetail() {
         <TabPanel value={activeTab} index={1}>
           <WartungTab
             fahrzeugId={vehicle.id}
-            wartungslog={vehicle.wartungslog}
+            wartungslog={vehicle.wartungslog ?? []}
             onAdded={fetchVehicle}
             canWrite={canChangeStatus}
           />