feat(frontend): implement unified design system with 17 reusable template components, skeleton loading states, and golden-ratio-based layouts

frontend/src/pages/Ausruestungsanfrage.tsx

@@ -1,8 +1,8 @@
 import { useState, useMemo, useEffect } from 'react';
 import {
-  Box, Tab, Tabs, Typography, Grid, Button, Chip,
+  Box, Tab, Tabs, Typography, Grid, Chip,
   Table, TableBody, TableCell, TableContainer, TableHead, TableRow, Paper,
-  TextField, IconButton, MenuItem,
+  TextField, MenuItem,
 } from '@mui/material';
 import { Add as AddIcon } from '@mui/icons-material';
 import { useQuery } from '@tanstack/react-query';