feat(localization): update and enhance localization files for multiple languages

- Updated localization files for various languages, including English, German, Spanish, Portuguese, and Chinese, to ensure consistency and accuracy across the application.
- Added new keys and updated existing ones to support recent UI changes and features, particularly in project views, task lists, and admin center settings.
- Enhanced the structure of localization files to improve maintainability and facilitate future updates.
- Implemented performance optimizations in the frontend components to better handle localization data.

worklenz-frontend/src/components/debug/HolidayDebugInfo.tsx

@@ -0,0 +1,100 @@
+import React from 'react';
+import { Card, Typography, Tag, Space } from 'antd';
+import { useAppSelector } from '@/hooks/useAppSelector';
+import { RootState } from '@/app/store';
+import dayjs from 'dayjs';
+
+const { Text } = Typography;
+
+interface HolidayDebugInfoProps {
+  show?: boolean;
+}
+
+const HolidayDebugInfo: React.FC<HolidayDebugInfoProps> = ({ show = false }) => {
+  const { holidays, loadingHolidays, holidaysDateRange, holidaySettings } = useAppSelector(
+    (state: RootState) => state.adminCenterReducer
+  );
+
+  if (!show) return null;
+
+  return (
+    <Card
+      size="small"
+      title="Holiday Debug Info"
+      style={{
+        marginBottom: 16,
+        fontSize: '12px',
+        backgroundColor: '#f8f9fa',
+        border: '1px dashed #ccc',
+      }}
+    >
+      <Space direction="vertical" size="small" style={{ width: '100%' }}>
+        <div>
+          <Text strong>Holiday Settings:</Text>
+          <div style={{ marginLeft: 8 }}>
+            <Text>Country: {holidaySettings?.country_code || 'Not set'}</Text>
+            <br />
+            <Text>State: {holidaySettings?.state_code || 'Not set'}</Text>
+            <br />
+            <Text>Auto Sync: {holidaySettings?.auto_sync_holidays ? 'Yes' : 'No'}</Text>
+          </div>
+        </div>
+
+        <div>
+          <Text strong>Current Date Range:</Text>
+          {holidaysDateRange ? (
+            <div style={{ marginLeft: 8 }}>
+              <Text>From: {holidaysDateRange.from}</Text>
+              <br />
+              <Text>To: {holidaysDateRange.to}</Text>
+            </div>
+          ) : (
+            <Text> Not loaded</Text>
+          )}
+        </div>
+
+        <div>
+          <Text strong>Holidays Loaded:</Text>
+          <Space wrap style={{ marginLeft: 8 }}>
+            {loadingHolidays ? (
+              <Tag color="blue">Loading...</Tag>
+            ) : holidays.length > 0 ? (
+              <>
+                <Tag color="green">Total: {holidays.length}</Tag>
+                <Tag color="orange">
+                  Official: {holidays.filter(h => h.source === 'official').length}
+                </Tag>
+                <Tag color="purple">
+                  Custom: {holidays.filter(h => h.source === 'custom').length}
+                </Tag>
+              </>
+            ) : (
+              <Tag color="red">No holidays loaded</Tag>
+            )}
+          </Space>
+        </div>
+
+        {holidays.length > 0 && (
+          <div>
+            <Text strong>Recent Holidays:</Text>
+            <div style={{ marginLeft: 8, maxHeight: 100, overflow: 'auto' }}>
+              {holidays.slice(0, 5).map((holiday, index) => (
+                <div key={`${holiday.id}-${index}`} style={{ fontSize: '11px' }}>
+                  <Tag size="small" color={holiday.source === 'official' ? 'blue' : 'orange'}>
+                    {holiday.source}
+                  </Tag>
+                  {dayjs(holiday.date).format('MMM DD')}: {holiday.name}
+                </div>
+              ))}
+              {holidays.length > 5 && (
+                <Text type="secondary">... and {holidays.length - 5} more</Text>
+              )}
+            </div>
+          </div>
+        )}
+      </Space>
+    </Card>
+  );
+};
+
+export default HolidayDebugInfo;