Add documentation headers across system modules

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/CustomerMenu.cpp

@@ -1,8 +1,27 @@
+/*
+File: CustomerMenu.cpp
+Description: Implements the CustomerMenu class which provides the customer’s console interface
+             in the Vehicle Service Management System. Handles menu display, user input, and
+             customer-specific operations such as booking services, viewing history, managing payments,
+             invoices, and notifications.
+Author: Trenser
+Date: 19-May-2026
+*/
+
 #include "CustomerMenu.h"
 #include "InputHelper.h"
 #include "OutputHelper.h"
 #include "MenuHelper.h"
 
+/*
+Function: showMenu
+Description: Displays the customer menu in a loop until the user chooses to logout.
+             Handles exceptions and ensures smooth user interaction.
+Parameters:
+    - None
+Returns:
+    - void
+*/
 void CustomerMenu::showMenu()
 {
 	bool isMenuActive = true;
@@ -64,11 +83,27 @@ void CustomerMenu::viewInvoices()
 {
 }
 
+/*
+Function: viewNotifications
+Description: Displays notifications for the customer and allows deletion of notifications.
+Parameters:
+    - None
+Returns:
+    - void
+*/
 void CustomerMenu::viewNotifications()
 {
 	viewAndDeleteNotification(m_controller);
 }
 
+/*
+Function: getNotificationPreference (static helper)
+Description: Helper function to configure notification preferences for a specific service.
+Parameters:
+    - serviceName: Name of the service for which notifications are being configured.
+Returns:
+    - bool: True if notifications are enabled, False if disabled.
+*/
 static bool getNotificationPreference(const std::string& serviceName)
 {
     int choice;
@@ -94,6 +129,14 @@ static bool getNotificationPreference(const std::string& serviceName)
     }
 }
 
+/*
+Function: configureNotifications
+Description: Allows the customer to configure notification preferences for payment and service management.
+Parameters:
+    - None
+Returns:
+    - void
+*/
 void CustomerMenu::configureNotifications()
 {
     bool paymentServiceNotifications = getNotificationPreference("Payment Management Service");