Fix: improve notification display formatting and add global exception handling

- add truncateString utility for long notification titles
- improve notification table alignment
- remove unnecessary heading spacing in notification preferences
- add application-level exception handling in UserInterface::run()

Fixes #1777

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/OutputHelper.h

@@ -21,4 +21,28 @@ namespace util
     {
         std::cout << "\x1B[2J\x1B[H" << std::flush;
     }
+
+    /*
+    Function: truncateString
+    Description:
+        Truncates a string if its length exceeds the given maximum length.
+        The truncated string ends with "..." to indicate omitted characters.
+    Parameters:
+        - text: const std::string&, input string to truncate
+        - maxLength: size_t, maximum allowed length of the returned string
+    Returns:
+        - std::string: Original string if within limit, otherwise truncated string with "..."
+    */
+    inline std::string truncateString(const std::string& text, size_t maxLength)
+    {
+        if (text.length() <= maxLength)
+        {
+            return text;
+        }
+        if (maxLength <= 3)
+        {
+            return std::string(maxLength, '.');
+        }
+        return text.substr(0, maxLength - 3) + "...";
+    }
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/MenuHelper.h

@@ -553,9 +553,9 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
 {
     util::Map<int, const Notification*> indexedNotifications;
     std::cout << std::left
-        << std::setw(6) << "Index"
+        << std::setw(10) << "Index"
         << std::setw(15) << "ID"
-        << std::setw(30) << "Title"
+        << std::setw(35) << "Title"
         << std::setw(25) << "Timestamp"
         << std::endl;
     int currentIndex = 1;
@@ -565,9 +565,9 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
         if (currentNotification)
         {
             std::cout << std::left
-                << std::setw(6) << currentIndex
+                << std::setw(10) << currentIndex
                 << std::setw(15) << currentNotification->getId()
-                << std::setw(35) << currentNotification->getTitle()
+                << std::setw(35) << util::truncateString(currentNotification->getTitle(), 30)
                 << std::setw(25) << currentNotification->getCreatedAt().toString()
                 << std::endl;
             indexedNotifications.insert(currentIndex, currentNotification);
@@ -886,7 +886,7 @@ inline bool getNotificationPreference(const std::string& serviceName)
     while (true)
     {
         util::clear();
-        std::cout << "    Configure Notification Preferences\n";
+        std::cout << "Configure Notification Preferences\n";
         std::cout << "\n" << serviceName << " Notifications\n";
         std::cout << "1. Enable Notifications\n";
         std::cout << "2. Disable Notifications\n";

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/UserInterface.cpp

@@ -7,6 +7,8 @@ Author: Trenser
 Date:19-May-2026
 */
 
+#include <iostream>
+#include <stdexcept>
 #include "Enums.h"
 #include "InputHelper.h"
 #include "OutputHelper.h"
@@ -23,29 +25,44 @@ Return type: void
 */
 void UserInterface::run()
 {
-	m_controller.loadSystemData();
-	m_controller.runSystemChecks();
-	bool isMenuActive = true;
-	while (isMenuActive)
+	try
 	{
-		try
+		m_controller.loadSystemData();
+		m_controller.runSystemChecks();
+		bool isMenuActive = true;
+		while (isMenuActive)
 		{
-			int choice;
-			util::clear();
-			std::cout << "Vehicle Service System\n1. Login\n2. Register Customer\n3. Exit\nEnter your Choice: ";
-			util::read(choice);
-			if (!handleOperation(choice))
+			try
 			{
-				isMenuActive = false;
+				int choice;
+				util::clear();
+				std::cout << "Vehicle Service System\n1. Login\n2. Register Customer\n3. Exit\nEnter your Choice: ";
+				util::read(choice);
+				if (!handleOperation(choice))
+				{
+					isMenuActive = false;
+				}
+			}
+			catch (const std::exception& e)
+			{
+				std::cout << "Exception: " << e.what() << std::endl;
+				util::pressEnter();
 			}
 		}
-		catch (const std::exception& e)
-		{
-			std::cout << "Exception: " << e.what() << std::endl;
-			util::pressEnter();
-		}
+		m_controller.saveSystemData();
+	}
+	catch (const std::invalid_argument& exception)
+	{
+		std::cout << "Exception: Invalid Argument: " << exception.what() << std::endl;
+	}
+	catch (const std::exception& exception)
+	{
+		std::cout << "Exception: " << exception.what() << std::endl;
+	}
+	catch (...)
+	{
+		std::cout << "Unknown error occurred." << std::endl;
 	}
-	m_controller.saveSystemData();
 }
 
 /*