feat(admin-center): implement admin center settings retrieval and enhance holiday population logic

- Added a new API endpoint in AdminCenterController to fetch admin center settings, including organization details.
- Updated the admin center API router to include the new settings route.
- Enhanced the holiday controller to check for recent holiday population before attempting to repopulate, preventing duplicate entries.
- Improved the holiday calendar component to manage holiday population attempts and display loading states.
- Updated localization files to support new messages related to calculation methods and holiday settings.

worklenz-frontend/src/components/admin-center/overview/holiday-calendar/holiday-calendar.tsx

@@ -55,6 +55,8 @@ const HolidayCalendar: React.FC<HolidayCalendarProps> = ({ themeMode, workingDay
   const [editModalVisible, setEditModalVisible] = useState(false);
   const [selectedHoliday, setSelectedHoliday] = useState<IHolidayCalendarEvent | null>(null);
   const [currentDate, setCurrentDate] = useState<Dayjs>(dayjs());
+  const [isPopulatingHolidays, setIsPopulatingHolidays] = useState(false);
+  const [hasAttemptedPopulation, setHasAttemptedPopulation] = useState(false);
 
   const fetchHolidayTypes = async () => {
     try {
@@ -69,9 +71,18 @@ const HolidayCalendar: React.FC<HolidayCalendarProps> = ({ themeMode, workingDay
 
   const populateHolidaysIfNeeded = async () => {
     // Check if we have holiday settings with a country code but no holidays
-    if (holidaySettings?.country_code && holidays.length === 0) {
+    // Also check if we haven't already attempted population and we're not currently populating
+    if (
+      holidaySettings?.country_code && 
+      holidays.length === 0 && 
+      !hasAttemptedPopulation && 
+      !isPopulatingHolidays
+    ) {
       try {
         console.log('🔄 No holidays found, attempting to populate official holidays...');
+        setIsPopulatingHolidays(true);
+        setHasAttemptedPopulation(true);
+        
         const populateRes = await holidayApiService.populateCountryHolidays();
         if (populateRes.done) {
           console.log('✅ Official holidays populated successfully');
@@ -80,6 +91,8 @@ const HolidayCalendar: React.FC<HolidayCalendarProps> = ({ themeMode, workingDay
         }
       } catch (error) {
         console.warn('⚠️ Could not populate official holidays:', error);
+      } finally {
+        setIsPopulatingHolidays(false);
       }
     }
   };
@@ -110,7 +123,12 @@ const HolidayCalendar: React.FC<HolidayCalendarProps> = ({ themeMode, workingDay
   // Check if we need to populate holidays when holiday settings are loaded
   useEffect(() => {
     populateHolidaysIfNeeded();
-  }, [holidaySettings, holidays.length]);
+  }, [holidaySettings]);
+
+  // Reset population attempt state when holiday settings change
+  useEffect(() => {
+    setHasAttemptedPopulation(false);
+  }, [holidaySettings?.country_code]);
 
   const customHolidays = useMemo(() => {
     return holidays.filter(holiday => holiday.source === 'custom');
@@ -300,6 +318,11 @@ const HolidayCalendar: React.FC<HolidayCalendarProps> = ({ themeMode, workingDay
                 {holidaySettings.country_code}
                 {holidaySettings.state_code && ` (${holidaySettings.state_code})`}
               </span>
+              {isPopulatingHolidays && (
+                <span style={{ marginLeft: 8, color: '#faad14' }}>
+                  🔄 Populating official holidays...
+                </span>
+              )}
             </Typography.Text>
           )}
         </div>

worklenz-frontend/src/components/projects/project-finance/rate-card-drawer/RateCardDrawer.tsx

@@ -400,7 +400,7 @@ const RateCardDrawer = ({
             handleDeleteRole(index);
           }}
         >
-          <Tooltip title="Delete">
+          <Tooltip title={t('deleteTooltip') || 'Delete'}>
             <Button size="small" icon={<DeleteOutlined />} />
           </Tooltip>
         </Popconfirm>
@@ -504,10 +504,10 @@ const RateCardDrawer = ({
             action={
               <Space direction="horizontal">
                 <Button size="small" type="primary" onClick={handleConfirmSave}>
-                  Save
+                  {t('saveButton') || 'Save'}
                 </Button>
                 <Button size="small" danger onClick={handleConfirmDiscard}>
-                  Discard
+                  {t('discardButton') || 'Discard'}
                 </Button>
               </Space>
             }
@@ -568,8 +568,10 @@ const RateCardDrawer = ({
             <Alert
               message={
                 isManDaysMethod
-                  ? `Organization is using man days calculation (${organization.hours_per_day || 8}h/day). Rates above represent daily rates.`
-                  : 'Organization is using hourly calculation. Rates above represent hourly rates.'
+                  ? t('manDaysCalculationMessage', { 
+                      hours: organization.hours_per_day || 8 
+                    }) || `Organization is using man days calculation (${organization.hours_per_day || 8}h/day). Rates above represent daily rates.`
+                  : t('hourlyCalculationMessage') || 'Organization is using hourly calculation. Rates above represent hourly rates.'
               }
               type="info"
               showIcon