update

frontend/src/components/shared/Header.tsx

@@ -8,7 +8,6 @@ import {
   ListItemIcon,
   Divider,
   Box,
-  Tooltip,
   Menu,
   MenuItem,
 } from '@mui/material';
@@ -18,12 +17,12 @@ import {
   Settings,
   Logout,
   Menu as MenuIcon,
-  Chat,
 } from '@mui/icons-material';
 import { useAuth } from '../../contexts/AuthContext';
 import { useNavigate } from 'react-router-dom';
+import { useQuery } from '@tanstack/react-query';
+import { configApi } from '../../services/config';
 import NotificationBell from './NotificationBell';
-import { useLayout } from '../../contexts/LayoutContext';
 
 interface HeaderProps {
   onMenuClick: () => void;
@@ -32,7 +31,12 @@ interface HeaderProps {
 function Header({ onMenuClick }: HeaderProps) {
   const { user, logout } = useAuth();
   const navigate = useNavigate();
-  const { toggleChatPanel } = useLayout();
+  const { data: settings } = useQuery({
+    queryKey: ['pdfSettings'],
+    queryFn: () => configApi.getPdfSettings(),
+    staleTime: 5 * 60 * 1000,
+  });
+
   const [anchorEl, setAnchorEl] = useState<null | HTMLElement>(null);
 
   const handleMenuOpen = (event: React.MouseEvent<HTMLElement>) => {
@@ -83,25 +87,24 @@ function Header({ onMenuClick }: HeaderProps) {
           <MenuIcon />
         </IconButton>
 
-        <LocalFireDepartment sx={{ mr: 2 }} />
-        <Typography variant="h6" component="div" sx={{ flexGrow: 1 }}>
-          Feuerwehr Dashboard
-        </Typography>
+        {settings?.app_logo ? (
+          <Box
+            onClick={() => navigate('/dashboard')}
+            sx={{ mr: 2, cursor: 'pointer', display: 'flex', alignItems: 'center', flexGrow: 1 }}
+          >
+            <img src={settings.app_logo} alt="Logo" style={{ height: 36 }} />
+          </Box>
+        ) : (
+          <>
+            <LocalFireDepartment sx={{ mr: 2 }} />
+            <Typography variant="h6" component="div" sx={{ flexGrow: 1 }}>
+              Feuerwehr Dashboard
+            </Typography>
+          </>
+        )}
 
         {user && (
           <>
-            <Tooltip title="Chat">
-              <IconButton
-                color="inherit"
-                onClick={toggleChatPanel}
-                size="small"
-                aria-label="Chat öffnen"
-                sx={{ ml: 0.5 }}
-              >
-                <Chat />
-              </IconButton>
-            </Tooltip>
-
             <NotificationBell />
 
             <IconButton