Add SetDuration method and enhance command handling in TaskTimer

- Introduced SetDuration method to allow setting the timer duration when not running.
- Updated ProcessTimerCommand to handle ADDTIME and SETDURATION commands with appropriate validation.
- Improved logging for command processing and added warnings for invalid inputs.

Unity/Assets/Scripts/TaskTimer.cs

@@ -1,6 +1,5 @@
 using UnityEngine;
 using UnityEngine.UI;
-using UnityEngine.SceneManagement;
 using TMPro;
 
 public class TaskTimer : MonoBehaviour
@@ -94,9 +93,24 @@ public class TaskTimer : MonoBehaviour
         Debug.Log("TaskTimer: Timer reset");
     }
 
+    public void SetDuration(float seconds)
+    {
+        if (isRunning)
+        {
+            Debug.LogWarning("TaskTimer: Cannot set duration while timer is running. Use AddTime() instead.");
+            return;
+        }
+        
+        taskDuration = seconds;
+        timeRemaining = taskDuration;
+        UpdateTimerDisplay();
+        Debug.Log($"TaskTimer: Duration set to {seconds} seconds");
+    }
+
     public void AddTime(float seconds)
     {
         timeRemaining += seconds;
+        UpdateTimerDisplay();
         Debug.Log($"TaskTimer: Added {seconds} seconds. New time: {timeRemaining}");
     }
 
@@ -139,10 +153,9 @@ public class TaskTimer : MonoBehaviour
     private void OnTimerExpired()
     {
         isRunning = false;
-        Debug.Log("TaskTimer: Time expired! Returning to Lobby...");
+        Debug.Log("TaskTimer: Time expired!");
         
-        // Load Lobby scene
-        SceneManager.LoadScene("Lobby");
+        // Timer expired - no automatic scene switching
     }
 
     // Public methods for external control
@@ -164,7 +177,37 @@ public class TaskTimer : MonoBehaviour
     // Public method to process timer commands (called from UDP listener in TaskButtonManager)
     public void ProcessTimerCommand(string command)
     {
-        command = command.ToUpper();
+        command = command.ToUpper().Trim();
+        
+        // Check for ADDTIME command with value (e.g., "ADDTIME 30")
+        if (command.StartsWith("ADDTIME"))
+        {
+            string[] parts = command.Split(' ');
+            if (parts.Length >= 2 && float.TryParse(parts[1], out float seconds))
+            {
+                AddTime(seconds);
+            }
+            else
+            {
+                Debug.LogWarning("TaskTimer: ADDTIME command requires a numeric value (e.g., 'ADDTIME 30')");
+            }
+            return;
+        }
+        
+        // Check for SETDURATION command with value (e.g., "SETDURATION 300")
+        if (command.StartsWith("SETDURATION"))
+        {
+            string[] parts = command.Split(' ');
+            if (parts.Length >= 2 && float.TryParse(parts[1], out float seconds))
+            {
+                SetDuration(seconds);
+            }
+            else
+            {
+                Debug.LogWarning("TaskTimer: SETDURATION command requires a numeric value (e.g., 'SETDURATION 300')");
+            }
+            return;
+        }
         
         switch (command)
         {
@@ -181,7 +224,7 @@ public class TaskTimer : MonoBehaviour
                 ResetTimer();
                 break;
             default:
-                Debug.LogWarning($"TaskTimer: Unknown command: {command}. Valid commands: START, PAUSE, RESUME, RESET");
+                Debug.LogWarning($"TaskTimer: Unknown command: {command}. Valid commands: START, PAUSE, RESUME, RESET, ADDTIME <seconds>, SETDURATION <seconds>");
                 break;
         }
     }