Merged PR 1159: Vehicle Service System v1.1.0.0

**New Features**

**Payment Confirmation Workflow**
- Added support for payment confirmation by administrators.

- Introduced a new PAID payment status.

- Implemented invoice confirmation flow from PAID → COMPLETED.

- Added invoice filtering based on payment status.

- Added admin menu option to confirm customer payments.

**Technician Job Status Workflow**
- Enhanced technician job management with multi-stage status updates.

- Added support for job status transitions:

- STARTED → IN_PROGRESS

- IN_PROGRESS → COMPLETED

- Added invoice generation and customer notification upon booking completion.

- Improved job visibility by displaying current job status.

**UI Improvements**
- Improved formatting and wording in the Technician Job Status workflow.

- Standardized status labels using "In Progress".

- Improved prompts, headings, and job selection messages.

- Enhanced readability of job listings.

**Bug Fixes**
- Fixed duplicate customer notifications when an assigned technician is removed.

- Prevented creation of duplicate usernames across all user states.

- Fixed authentication conflicts caused by reuse of deleted/disabled usernames.

- Improved booking cancellation handling for customer and technician removal scenarios.

- Updated cancellation logic to correctly handle bookings in IN_PROGRESS state.

Related work items: #1797, #1798, #1807, #1808, #1809

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/Validator.cpp

@@ -116,15 +116,13 @@ bool util::isPasswordValid(const std::string& password)
  *     usersMap - map of user objects keyed by identifier
  * Returns:
  *     bool - true if the username is already in use by an active user, false otherwise
- * Notes:
- *     - Only considers users with state util::State::ACTIVE
  */
 bool util::isUsernameDuplicate(const std::string& username, const util::Map<std::string, User*>& usersMap)
 {
     int index = usersMap.findIf(
         [&](const std::string&, User* user)
         {
-            return (user->getUserName() == username && user->getState() == util::State::ACTIVE);
+            return (user->getUserName() == username);
         }
     );
     return index != -1;

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

@@ -736,7 +736,7 @@ inline std::string selectJobCardToUpdate(util::Map<std::string, const JobCard*>&
     util::Map<int, const JobCard* > incompleteJobCards;
     if (assignedJobCards.getSize() == 0)
     {
-        std::cout << "No jobs available.\n\n";
+        std::cout << "\nNo jobs available.\n\n";
         return "";
     }
     int currentIndex = 1;
@@ -744,12 +744,12 @@ inline std::string selectJobCardToUpdate(util::Map<std::string, const JobCard*>&
     if (selectedJobStatusType == util::ServiceJobStatus::STARTED)
     {
         util::clear();
-        std::cout << "Select a job to update to Inprogress\n";
+        std::cout << "Select a job to mark as In Progress\n";
     }
     else if (selectedJobStatusType == util::ServiceJobStatus::IN_PROGRESS)
     {
         util::clear();
-        std::cout << "Select a job to update to Completed\n";
+        std::cout << "Select a job to mark as Completed\n";
     }
     else
     {
@@ -780,7 +780,7 @@ inline std::string selectJobCardToUpdate(util::Map<std::string, const JobCard*>&
             incompleteJobCards.insert(currentIndex++, currentJobCard);
         }
     }
-    std::cout << "Select the Job Card to Update (Index): ";
+    std::cout << "Enter the job index to update: ";
     util::read(choice);
     int selectedJobCardIndex = incompleteJobCards.find(choice);
     if (selectedJobCardIndex != -1)

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp

@@ -121,7 +121,7 @@ void TechnicianMenu::updateJobStatus()
     std::string selectedJobID;
     util::ServiceJobStatus selectedJobStatus = util::ServiceJobStatus::PENDING;
 	util::Map<std::string, const JobCard*> assignedJobCards = m_controller.getJobCardsByUser();
-    std::cout << "Select the type of job you want to update\n1.Started\n2.Inprogress\nChoice: ";
+    std::cout << "Select the type of job you want to update:\n1.Started\n2.In Progress\nChoice: ";
     util::read(choice);
     if (choice == 1)
     {