feat(localization): add timer conflict handling and update translations

- Introduced a new hook `useTaskTimerWithConflictCheck` to manage timer conflicts, prompting users when a timer is already running for a different task.
- Updated localization files for Albanian, German, English, Spanish, Portuguese, and Chinese to include new translation keys related to timer conflict handling and cancellation.
- Refactored components to utilize the new timer hook, enhancing user experience by preventing overlapping timers.

worklenz-frontend/src/hooks/useTaskTimerWithConflictCheck.ts

@@ -0,0 +1,94 @@
+import { useState, useEffect, useCallback } from 'react';
+import { Modal } from 'antd';
+import { useTranslation } from 'react-i18next';
+import { useSocket } from '@/socket/socketContext';
+import { SocketEvents } from '@/shared/socket-events';
+import { taskTimeLogsApiService } from '@/api/tasks/task-time-logs.api.service';
+import { useTaskTimer } from './useTaskTimer';
+
+interface ConflictingTimer {
+  task_id: string;
+  task_name: string;
+  project_name: string;
+}
+
+export const useTaskTimerWithConflictCheck = (taskId: string, timerStartTime: string | null) => {
+  const { socket } = useSocket();
+  const { t: tTable } = useTranslation('task-list-table');
+  const { t: tCommon } = useTranslation('common');
+
+  // Ensure timerStartTime is a number or null, as required by useTaskTimer
+  const parsedTimerStartTime = typeof timerStartTime === 'string' && timerStartTime !== null
+    ? Number(timerStartTime)
+    : timerStartTime;
+
+  const originalHook = useTaskTimer(taskId, parsedTimerStartTime as number | null);
+  const [isCheckingConflict, setIsCheckingConflict] = useState(false);
+
+  const checkForConflictingTimers = useCallback(async () => {
+    try {
+      const response = await taskTimeLogsApiService.getRunningTimers();
+      const runningTimers = response.body || [];
+      
+      // Find conflicting timer (running timer for a different task)
+      const conflictingTimer = runningTimers.find((timer: ConflictingTimer) => 
+        timer.task_id !== taskId
+      );
+      
+      return conflictingTimer;
+    } catch (error) {
+      console.error('Error checking for conflicting timers:', error);
+      return null;
+    }
+  }, [taskId]);
+
+  const handleStartTimerWithConflictCheck = useCallback(async () => {
+    if (isCheckingConflict) return;
+    
+    setIsCheckingConflict(true);
+    
+    try {
+      const conflictingTimer = await checkForConflictingTimers();
+      
+      if (conflictingTimer) {
+        Modal.confirm({
+          title: tTable('timer.conflictTitle'),
+          content: tTable('timer.conflictMessage', { 
+            taskName: conflictingTimer.task_name,
+            projectName: conflictingTimer.project_name 
+          }),
+          okText: tTable('timer.stopAndStart'),
+          cancelText: tCommon('cancel'),
+          onOk: () => {
+            // Stop the conflicting timer
+            if (socket) {
+              socket.emit(SocketEvents.TASK_TIMER_STOP.toString(), JSON.stringify({ 
+                task_id: conflictingTimer.task_id 
+              }));
+            }
+            
+            // Start the new timer after a short delay
+            setTimeout(() => {
+              originalHook.handleStartTimer();
+            }, 100);
+          },
+        });
+      } else {
+        // No conflict, start timer directly
+        originalHook.handleStartTimer();
+      }
+    } catch (error) {
+      console.error('Error handling timer start with conflict check:', error);
+      // Fallback to original behavior
+      originalHook.handleStartTimer();
+    } finally {
+      setIsCheckingConflict(false);
+    }
+  }, [isCheckingConflict, checkForConflictingTimers, tTable, tCommon, socket, originalHook]);
+
+  return {
+    ...originalHook,
+    handleStartTimer: handleStartTimerWithConflictCheck,
+    isCheckingConflict,
+  };
+};